Self-centering Ability Research Articles

Nonlinear Dynamic Analysis of Pilotis Structures Supported by Drift-Hardening Concrete Columns.

Pilotis structures consisting of upper concrete bearing-walls and a soft first story have been well used in residential and office buildings in urban areas to primarily accommodate parking lots. In this research, drift-hardening concrete (DHC) columns developed by the authors are proposed to form the pilotis story with the aims of reducing its excessive residual drift caused by stronger earthquakes than anticipated in current seismic codes, mitigating damage degree, and enhancing resilience of the pilotis story. Nonlinear dynamic analysis was conducted to investigate the dynamic response characteristics of the wall structures supported by DHC columns. To this end, two sample six-story one-bay pilotis structures were designed following the current Japanese seismic design codes and analyzed. One sample structure is supported by ductile concrete (DC) columns, while the other is supported by DHC columns, which have the same dimensions, steel amount, and concrete strength as DC columns. Three representative ground motions were adopted for the nonlinear dynamic analysis. The analytical parameter was the amplitude of peak ground acceleration (PGA), scaled by the peak ground velocity (PGV) ranging between 12.5 cm/s and 100 cm/s with an interval of 12.5 cm/s. The analytical results have revealed that the residual drift of the pilotis story composed of DHC columns could be reduced to nearly zero under selected earthquakes scaled up to PGV = 100 cm/s, owing to not only the inherent self-centering ability of DHC columns but also the shake-down effect, which implies that the use of DHC columns can greatly enhance resilience of pilotis structures under strong earthquake inputs and promote its application in the buildings located in strong earthquake-prone regions. The maximum inter-story shear forces (MISFs) along the building height of the two models are also compared.

Experimental study on precast concrete columns reinforced with bundled SFCBs under horizontal cyclic loading

The poor corrosion resistance of steel bars limits the potential application of precast concrete structures. A promising solution is the use of steel-fiber reinforced polymer (FRP) composite bars (SFCBs) as reinforcements. SFCBs consist of an inner steel bar and an outer layer of FRP, providing excellent durability and customizable post-yield stiffness. The fabrication process of precast concrete structures can be more efficient by the utilization of bundled reinforcement and the deformation capacity can be enhanced by the weakening of the bond behavior. This paper describes a quasi-static test conducted on five precast concrete columns reinforced with bundled SFCBs (PCC-B-SF), as well as one conventional reinforced concrete column. The variables of the experiment contained the number of bars in each bundle (one (SF-1-P), two (SF-2-P), and three (SF-3-P)) and the construction method used (cast-in-place, partial grouting assembly, or full-length grouting assembly). The failure modes, hysteretic behavior, energy dissipation, residual deformation, and plastic hinge length were investigated. The results show that increasing the number of bars in each bundle of PCC-B-SFs leads to higher deformation capacity, energy ductility and self-centering ability. The ultimate deformation of SF-3-P was approximately 43.8% higher compared to the single-bar reinforced concrete column. Furthermore, the energy ductility of SF-2-P, SF-3-P, and SF-3-PL (with full-length grouting) was 16.1%, 20.7%, and 79.2% higher compared to SF-1-P. However, increasing the number of bars in each bundle may have a negative impact on energy dissipation. With full-length grouting, the highly bundled PCC-B-SF (consisting of three or more bars in one bundle) was found to enhance the bearing capacity and prolong plastic hinge regions. These findings suggest that the performance of PCC-B-SFs can exceed that of cast-in-place concrete columns.

Experimental and analytical modelling on a novel self-centering viscous damper

Self-centering (SC) supplemental dampers offer a feasible approach to realize low-damage structures. A novel self-centering viscous damper (SCVD) that incorporates an SC part and a viscous damper (VD) part in parallel, and then series with a length adjustable (LA) part. The working mechanism and hysteretic model were both analyzed for the SCVDs. Dynamic reversed sinusoidal displacement inputs were used in experimental proof-of-concept validation studies. Each component was examined separately to describe and distinguish their distinct contributions to the whole device. Individual results in summing are consistent with hybrid device outcomes for the same input. The SCVDs showed excellent self-centering capability with satisfactory energy dissipation. A maximum equivalent viscous damping ratio (EVDR) of 99.37% was observed. A theoretical model and a numerical model were built and examined for the proposed SCVDs. The inevitable gaps from installation have a noticeable effect on the VD part and the SCVD, especially for small strokes. Except for small strokes, comparisons of test findings and analytical models reveal similar hysteretic reactions, for which the coefficients of determination are greater than 0.9, thereby validating the performance of the theoretical and analytical models to simulate the behavior of the tested SCVDs. In comparison to existing SCVDs, the suggested SCVDs have a more controllable SC ability, length adjustability, and energy dissipation capacity based on the demands of the designers. Furthermore, five distinct lateral resisting components were used in nonlinear response history analysis to compare the seismic and resilient performance amongst the moment resisting frame (MRF), buckling restrained brace (BRB), SC, VD and SCVD systems. Finally, the addition of SCVDs and VD parts can both be effective in controlling the maximum and residual story drift ratios on average. Overall, our findings provide innovative, simple implementable choices for developing low-damage structures.

Cyclic response and parametric study of a self-centering coupled shear wall system with disc spring devices

The use of the disc spring device (DSD) to provide a superior self-centering ability and ductility for shear walls has been investigated in both numerical simulation and pseudo-static cyclic loading tests. In the current study, the DSD is adopted to improve the resilience of the coupled shear walls. A finite element model of a present coupled shear wall is developed and verified by the experiment. Based on the prototype model, a model of the self-centering coupled shear wall system is built by installing two DSDs in the bottom corners of the wall piers. A parametric study is performed to provide a holistic evaluation on the effect of the stiffness, friction, and installation layout of the DSD. Results prove the resilience promotion of the traditional coupled shear wall by installing DSDs. The sufficient initial stiffness of DSDs can provide high overturning moment capacity and the second stiffness of DSDs is key in mitigating the residual displacement for the self-centering coupled shear wall. The friction between disc springs can enhance energy dissipation ability of the system. More installed DSDs would be beneficial for the ductility of the coupled shear walls.

Quasi-static cyclic loading experiment and analysis of mechanical properties of the Sc-FSB

In order to improve the seismic performance of a continuous bridge, we propose to install self-centering functional separation bearings (Sc-FSB) between the fixed pier and the girder in the bridge. Following the design idea of separating functionalities, the Sc-FSB device is primarily composed of a sliding bearing to bear vertical load, a friction cable to carry horizontal seismic force and dissipate the seismic energy input into the superstructure, and self-centering springs to achieve post-earthquake self-centering effects. In this study, the Sc-FSB device's hysteretic model is established, and its theoretical formula is deduced. The quasi-static cyclic tests of 10 Sc-FSB device specimens were performed to verify their promising mechanical performances, in which we consider parameters of two friction cables with different diameters and three self-centering springs with different stiffnesses. The results show that the Sc-FSB device holds excellent characteristics of a typical friction damper, such as relatively stable outputs, good energy dissipation and deformation capacity under all working conditions, and its fatigue performance meets the requirements of typical specifications. In addition, several unique features of the Sc-FSB are identified as follows. The maximum damping force is independent of the loading frequency, and it increases with the displacement amplitude. The damping force is significantly affected by the pre-tension force of the friction cable and the number of winding coils, and as a result, the energy dissipation performance is promising. The stiffness and pre-tension force of the self-centering spring significantly improve the self-centering ability of the Sc-FSB device. The design of friction cable and self-centering spring effectively separates the functions of bearings. This study can serve as a foundation for the further study of Sc-FSB device and as a reference for the research of other similar friction dampers.

Self-centering Aseismic Device Based on Shape Memory Alloy

The seismic performance and quick resilience to build structures after an earthquake are paid more and more attention. The traditional seismic design of structures often adopts increasing the ductility of structures to meet the requirements of stronger earthquakes, but it may cause excessive residual deformation of structures after earthquakes, which leads to the difficulty of post-earthquake repair. The resilient structure can improve the seismic performance of the structure, and at the same time, the damage is concentrated on the dissipative components that can be quickly repaired. This requires the improvement of the seismic performance of the dissipative support, while effectively reducing the residual deformation of the components and enhancing the self-centering ability of the components. In this paper, a shape memory alloy (SMA) self-centering device suitable for rocking wall structure is developed from the aspects of SMA heat treatment, material properties, conceptual design, structural design, and mechanical properties test, so as to achieve a more efficient shock-proof structure with resilient functions.

Cyclic behavior of self-slitting squat composite shear walls with concrete-filled steel tubes: Experiment

To improve the deformation capacity of low-rise shear walls, an alternative approach of self-slitting squat composite shear wall with concrete-filled steel tubular columns (SSLSST) was proposed by the authors. This paper presents the experimental results of five SSLSST specimens subjected to cyclic loading, experimental parameters included steel tube thickness (ts), spacing of transverse reinforcement (S), axial compression ratio (n), and shear stud arrangement of inner steel tube. The results showed that owing to weakened effects of both horizontal anchorage to concrete and vertical shear resistance, the self-slit occurred in the SSLSST specimen with half-section shear studs of inner steel tube; SSLSST specimens maintained integrality to resist lateral force like the normal shear wall before the yielding status; with the lateral deformation increasing, the SSLSST specimens were divided into three independent column-type segments to jointly resist both lateral and compressive forces, and the seismic damage mainly concentrated within the slits, resulting in the seismic damage of the whole shear wall body was reduced. Increasing both S and ts can not only greatly improved the seismic resistance and ductility but also reduced the seismic damage and post-earthquake residual deformation (PERD). As expected, high n was not beneficial for the ductility ratio, energy dissipation, and PERD. Generally, the proposed SSLSST showed slight seismic damage, good seismic resistance capacity, ductility, and self-centering ability. Therefore, it is worthy to promote this new type of low-rise shear wall system to actual engineering.

Cyclic behavior and seismic control performance of SMA friction damper

Using superelastic shape memory alloy (SMA) bars and non-asbestos organic friction material, this study developed an innovative self-centering friction damper (SCFD). This hybrid passive control device consists of the self-centering device using SMA bars and the friction energy dissipation device which can provide excellent self-centering ability and energy-absorbing ability to meet the requirements of civil engineering applications. To explore the feasibility and hysteretic properties of the SCFD, experimental tests under cyclic loading were conducted. According to the experimental results, the proposed SCFD exhibited a stable and repeatable flag-shaped hysteretic response, which can achieve the recovered displacement of 76.07% and dissipated energy of 6.04 kJ at 42 mm. The finite element model of the SCFD using ABAQUS software was established and validated by experimental results. And a series of numerical simulations with different parameters were performed, which enables a more in-depth interpretation of the SCFD. Additionally, a system-level nonlinear time-history analysis was performed on a three-story steel frame equipped with and without SCFDs. The dynamic analysis results indicated that the SCFDs could effectively reduce structural damage and enhance post-earthquake recoverability under rare earthquakes.

Improved curving performance using unconventional wheelset guidance design and wheel-rail interface – present and future solutions

The conventional railway wheelset benefits from its self-steering and self-centering ability. Because the wheelset has a simple structure and preferable dynamics, railway trucks with wheelsets have been widely used for nearly 200 years. In the design of a railway vehicle with wheelsets, compatibility between curving ability and hunting stability has been studied for many years. Based on past research, the vehicle design with conventional wheelsets has been well summarised. Today, the requirement for railway systems has dramatically changed. For example, high-speed trains are required to run over a 350 km/h cruising speed, while maintaining a high quality of ride comfort and light rail vehicles for urban transit, are required to achieve an excellent curving ability at intersections and turnouts, while maintaining a sufficient degree of safety against derailment. It is true to say that unconventional approaches are necessary for designing the next generation of railway systems. In this paper, the history of research on steering bogies, including conventional wheelsets, is explained. Examples of unconventional railway vehicle concepts are introduced. Furthermore, a new wheelset concept based on the reconsideration of the wheel-rail interface is mentioned. In the new wheelset concepts, gravity stiffness is potentially effective to realise high curving performance; therefore, the dynamics and practical application, including negative tread conicity in independently rotating wheelsets, are mentioned. Nowadays, active control of the wheelset is becoming a practical solution for guidance and is mentioned regarding its brief history and future possibility with unconventional bogie design.

Bonding Mechanical Properties between SMA Fiber and ECC Matrix under Direct Pullout Loads.

SMAF-ECC material composed of shape memory alloy fiber (SMAF) and engineered cementitious composite (ECC) has good bending and tensile properties, as well as good crack self-healing ability, energy consumption, and self-centering ability. The bond behavior between fiber and matrix is crucial to the effective utilization of the superelasticity of SMAF. The experimental study considered three variables: SMA fiber diameter, fiber end shape, and bond length. The pullout stress-strain curve of SMAF was obtained, and the maximum pullout stress, maximum bond stress, and fiber utilization rate were analyzed. Compared with the straight end and the hook end, the maximum pullout stress of the specimen using the knotted end SMAF is above 900 MPa, the fiber undergoes martensitic transformation, and the fiber utilization rate is above 80%, indicating that the setting of the knotted end can give full play to the superelasticity of the SMAF. Within the effective bond length range, increasing the bond length can increase the maximum anchorage force of the knotted end SMAF. Increasing the fiber diameter can increase the maximum pullout stress and maximum anchoring force of the knotted end SMAF but reduce the utilization rate of SMA fiber. This study provides a reliable theoretical basis for the bonding properties between SMAF and ECC.

Development and application of a deformation-amplified self-centering energy dissipation device

Suitable seismic response reduction devices can substantially improve the seismic performance of engineering structures. However, devices with wide applicability and multi-function are lacking. A novel deformation-amplified self-centering energy dissipation (DA-SCED) device suitable for reducing the seismic response of different engineering structures is proposed in this paper. Self-centering of the device is achieved by a pre-pressed combined steel disc spring. The elastic–plastic hysteretic deformation of the lead rod is used to dissipate the earthquake energy. The shear deformation of the lead rods is amplified because the arc lengths of the lead rod embedded points and the connecting rod hinged point are proportional to the distances of both to the disc center when the steel disc rotates; the former distance is designed to be larger than the latter. Pseudo-static tests were conducted under reciprocating tension and compression of a full-scale model to determine the mechanical properties and seismic energy dissipation capacity of the device. A numerical simulation was performed to analyze the factors influencing mechanical performance. In addition, a restoring force model of the device was established and verified, and the seismic energy dissipation capacity was studied using a prefabricated segment pier. The results indicate that the DA-SCED device has good self-centering and energy dissipation abilities. Its hysteresis curves show flag-shaped characteristics, and the maximum residual displacement after unloading is only 0.97 mm. The self-centering capacity can be improved by increasing the disc spring pre-pressure, and the energy dissipation capacity can be enhanced by increasing the deformation amplification ratio and the diameter and number of the lead rods. The proposed restoring force model can describe the mechanical properties of the device accurately. Furthermore, the DA-SCED devices used in the prefabricated segment pier have satisfactory energy dissipation and self-centering performance under seismic action. After installing the device at the bottom of the pier, the transverse and longitudinal opening deformations between the cushion cap and bottom segment are decreased by 41.52 % and 46.75 %, the displacements of the pier top are reduced by 16.34 % and 31.63 %, and the shear forces of the pier bottom are reduced by 12.26 % and 11.96 %, respectively. The device can reduce the seismic responses and the level of damage to the pier, and improve the self-centering ability and seismic performance of the structure.

Capabilities of self-centering damping device based on pseudoelastic NiTi wires

This experimental study explored a new energy dissipation damper based on pre-stretched pseudoelastic NiTi shape memory alloy (SMA) wires. Due to the pseudoelastic effect and structural parameters, the device combined a self-centering ability and good damping properties. These features were experimentally verified in a prototype composed of four 1.5 mm diameter pseudoelastic NiTi SMA wires. The functional properties of the damping device under various loading frequencies and displacement ranges were studied. The device was pre-loaded by 50 loading cycles before testing to stabilize the functional properties of SMA wires. The dissipation energy grew with the device rod displacement amplitude in the studied frequency range. At all displacement amplitudes, the dissipation energy first rose and falled monotonically with the frequency growth from 0.001 to 0.005 Hz. The results obtained strongly indicate that the proposed pseudoelastic SMA damper can be effectively used in structures undergoing cyclic loading in terms of post-yield strength, energy dissipation, and re-centering capability.

Implementation Method of the Self-centering Ability for Independently Rotating Wheel Bogie

Implementation Method of the Self-centering Ability for Independently Rotating Wheel Bogie

Development and experimental verification of self-centering disc slit damper for buildings

The damage avoidance design (DAD) philosophy is oriented towards the low-damage design of building structures compared to the previous conventional ductile design. Low-damage structures with supplemental damping and self-centering ability are one of the main aspects of the DAD philosophy to decrease irreparable damage and enhance the seismic performance of structures. This research proposes an efficient, double-acting self-centering hysteretic damper by combining the widely used steel slit dampers and prestressed disc springs for building structures. The proposed seismic protection device is called Self-Centering Disc Slit Damper (SC-DSD), which consists of two square standard hollow steel sections, nested together with an assembly of prestressed disc springs within the steel sections. The performance of SC-DSD is assessed experimentally through a static cyclic loading test to evaluate the global system's dissipation capacity, self-centering ability, and hysteresis loop. A simplified numerical model is developed to predict the self-centering force-displacement relationship of the proposed device. Finally, the seismic force bearing capacity of the proposed damper is compared with the conventional slit damper.

Numerical study of a novel SMA-based self-centering beam-to-column connection

As an alternative option for conventional rigid beam-to-column welded connections, self-centering steel beam-to-column connections were developed to reduce or eliminate the residual deformation of the structure and mitigate or avoid structural damages. This paper presents a finite element analysis of a novel self-centering beam-to-column connection with shape memory alloy (SMA) tendons as recentering and energy dissipation elements and comb-teeth dampers (CTDs) as supplementary energy dissipation devices. Firstly, the configuration and structural behavior of the proposed connection is depicted and explained; then, with the aid of previous experimental models, the validation of finite element modeling methods is examined. In the following, detailed numerical models are established and analyzed to assess the effects of key design parameters on the cyclic behavior of the proposed connection. Finally, an analytical model is formulated to predict the whole cyclic behavior of the proposed system. The results indicate a great recentering and energy dissipation capacity for the proposed connection. It is shown that incorporating CTDs in the proposed connection can significantly enhance the cyclic response of the connection with roughly no adverse impact on self-centering ability. It is also concluded that there must be an adequate initial prestress in SMA tendons to exploit the maximum recentering ability of the proposed connection. Furthermore, comparing the structural performance metrics of the proposed connection reveals that the connections with higher damper geometric shape coefficients own higher ultimate strength and better energy dissipation capacity with almost unchanged recentering capability. Conversely, the longer the damper teeth height is, the lower performance parameters in the connections could be observed. Results also show reasonable concordances between the analytical model predictions and finite element analysis results. The results of this study can serve as tools to facilitate the practical design of SMA-based self-centering connections.

Test of Novel Self-Centering Energy Dissipative Braces with Pre-Pressed Disc Springs and U-Shaped Steel Plates

ABSTRACT To control the residual displacement of the structure after strong earthquakes, this paper develops and validates a novel brace, i.e. the self-centering energy dissipative brace with pre-pressed disc springs and U-shaped steel plates (SCEDB-U). The pre-pressed disc springs are used for recovering nonlinear deformation and the U-shaped steel plates are used for dissipating energy. Initially, the configuration and working principle are described in detail. Then the analytical equations governing the cyclic behavior of the brace are derived. To confirm the concept, the large-scale bracing specimens are designed and manufactured for the quasi-static cyclic loading tests. In the tests, the varied parameters included the plate width of the U-shaped steel plates and the pre-pressure magnitude of the stacked disc springs. Besides, the high-fidelity three-dimensional finite element (FE) models of SCEDB-U are established. According to the experimental data, the SCEDB-U has typical flag-shaped hysteresis, which is characterized by excellent self-centering capability and stable energy dissipation ability. It also indicates that increasing the plate width of U-shaped steel plates can effectively improve the energy dissipation capacity, but may induce residual displacement; increasing the pre-pressure magnitude of disc springs could improve self-centering ability. The numerical results are in good agreement with the experimental data; hence, the FE models can be further utilized for parametric analysis, initial design and optimization.

Experimental Study on Self-Centering Performance of the SMA Fiber Reinforced ECC Composite Beam.

The combination of superelastic shape memory alloy fibers and ECC materials can form a new SMA fiber reinforced ECC composite material (SMAF-ECC) with good self-centering performance. In order to study the self-centering performance of the new composite material, 6 groups of pre-notch beam specimens were made for three-point bending cyclic loading tests, and the failure phenomenon, hysteresis curve, self-centering effect and influencing factors of the specimens were analyzed. The research results show that when the SMA fibers are effectively anchored in the ECC matrix, the SMA fibers can exert the superelastic properties to provide the ECC beams with recoverying force, and realize the crack self-closure and deflection self-recovery function for the beams, with the minimum residual crack width and deflection is only 0.9 mm and 1.3 mm respectively. Increasing fiber content can cause a small increase in the self-centering ability of the beams. However, only when the fiber diameter is appropriate, better self-centering effect can be achieved, but the difference caused by fiber diameter in the test was only 5%. SMA Fiber end forms have significant influence on self-centering performance. The knotted end beam can get a more than 70% self-centering ratio, while the straight end beams and bended end beams have no self-centering ability. The research results provide important reference for the research and application of this new self-centering materials and their structures.

The Seismic Performance of New Self-Centering Beam-Column Joints of Conventional Island Main Buildings in Nuclear Power Plants

In order to improve the deformation energy consumption and self-centering ability of reinforced concrete (RC) frame beam-column joints for main buildings of conventional islands in nuclear power plants, a new type of self-centering joint equipped with super-elastic shape memory alloy (SMA) bars and a steel plate as kernel components in the core area of the joint is proposed in this study. Four 1/5-scale frame joints were designed and manufactured, including two contrast joints (a normal reinforced concrete joint and a concrete joint that replaces steel bars with SMA bars) and two new model joints with different SMA reinforcement ratios. Subsequently, the residual deformation, energy dissipation capacity, stiffness degradation and self-centering performance of the novel frame joints were studied through a low-frequency cyclic loading test. Finally, based on the OpenSees finite element software platform, an effective numerical model of the new joint was established and verified. On this basis, varying two main parameters, the SMA reinforcement ratio and the axial compression ratio, a simulation was systematically conducted to demonstrate the effectiveness of the proposed joint in seismic performance. The results show that replacing ordinary steel bars in the beam with SMA bars not only greatly reduces the bearing capacity and stiffness of the joint, but also makes the failure mode of the joint brittle. The construction of a new type of joint with consideration of the SMA reinforcement and the steel plate can improve the bearing capacity, delay the stiffness degradation and improve the ductility and self-centering capability of the joints. Within a certain range, increasing the ratio of the SMA bars can further improve the ultimate bearing capacity and energy dissipation capacity of the new joint. Increasing or decreasing the axial compression ratio of column ends has little effect on the overall seismic performance of new joints.

Seismic Performance of Hybrid Corrosion-Free Self-Centering Concrete Shear Walls

Reinforced concrete (RC) walls are extensively used in high-rise buildings to resist lateral loads, while ensuring an adequate level of ductility. Durability problems, including corrosion of conventional steel reinforcements, necessitate exploring alternative types of reinforcement. The use of glass fiber reinforced polymer (FRP) bars is a potential solution. However, these bars cannot be used in seismic applications because of their brittleness and inability to dissipate seismic energy. Superelastic shape memory alloy (SMA) is a corrosion-free material with high ductility and unique self-centering ability. Its high cost is a major barrier to use in construction projects. The clear advantage of utilizing both SMA and FRP to achieve durable self-centering structures has motivated the development of a composite SMA-FRP bar. This paper investigates the hybrid use of FRP bars and either SMA bars or composite SMA-FRP in concrete shear walls. An extensive parametric study was conducted to study the effect of different design parameters on the lateral performance of hybrid RC walls. The seismic behavior of the hybrid walls was then examined. The hybrid walls not only solved the durability problem but also significantly improved the seismic performance.

Experimental study on the effect of column lateral friction torque on seismic performance of IMS structure middle joints

The design of prestressed friction joints of integral prestressed prefabricated frame structure system (IMS) has a direct impact on the internal force distribution and deformation of the structure. To study the seismic performance of the IMS structure under low cyclic reciprocating load, quasi-static tests were carried out, and two spatial two-way prestressed frame beam slab column middle joints were designed. The effects of friction torque produced by lateral prestress on the ultimate bearing capacity, stiffness degradation, energy dissipation performance, and self-centering of joints are compared and analyzed. The test results show that the specimen SCJ2 with large column lateral friction torque is better than the specimen SCJ1 in initial stiffness, bearing capacity, and energy dissipation, but the self-centering ability and damage control are slightly poor; The column lateral friction torque is about 31.64% of the cracking moment of joint SCJ1, 7.51% of the ultimate moment, 43.58% of the cracking moment of joint SCJ2, and 10.99% of the ultimate moment, the column lateral friction torque has a great impact on the crack resistance and bearing capacity of the joint, which can not be ignored in the design. At the same time, to verify the safety of the prestressed friction joint of the IMS system and evaluate the friction and shear performance of the joint after a large earthquake, the residual shear capacity of the joint is tested on the specimens after the quasi-static test. The test results show that IMS prestressed friction joints can still ensure good shear performance and have sufficient reserve of post-earthquake shear capacity.