Time Limit For Project Research Articles

MAXIMIZING REAL-TIME MONITORING FOR EFFECTIVE DELAY ANALYSIS IN BRIDGE CONSTRUCTION PROJECTS WITH EVM SCHEDULING

A bridge is a civil engineering construction that has been used for generations to cross any obstacle below it. There are many conflicts in bridge construction, and they are getting worse every day. A flyover bridge has been constructed to reduce traffic congestion. Project costs may directly rise if there is a delay in completing the work. The act of analyzing a project's delay and determining its underlying causes is known as delay analysis. A contractual issue at the Zone 3 junction has caused project delays, which have impacted on the project time limit. Delays caused by factors beyond the parties’ control (Force Majeure) and Delays caused by an unbalanced contract. The EVM technique is used for evaluating Bridge Construction,which allows for project tracking. Construction project performance is investigated to determine the possibility of cost and time overruns, as well as the Estimation at Completion (EAC) and To-Complete Performance Index (TCPI) to evaluate how efficiently the remaining financial resources are used. To conduct analysis on the construction project's performance and identify critical issues regarding schedule andcost, a delayed construction project was chosen as a case study for this project. Delay Analysis was also conducted to determine the causes behind the project's variance in duration. KEYWORDS- Stake holder involvement, Contingency plan, Procurement scheduling, Resource management, Contractual consideration.

Simply-supported Box Girder Construction Technique of 40 m Movable Formwork Method Cast-in-Situ Railway Passenger Dedicated Line

<p>The movable formwork has the characteristics of light self weight, large bearing capacity, small rod type number, rapid assembling, and simplicity to construct. Therefore, when cast-in-situ concrete box girder is constructed, the moveable formwork has great meanings in cost reduction and project time limit shortening. By using this method, the difficulty that brackets cannot be distributed as the ground bearing capacity of bridges. Besides that, bridge sites is low is reasonably solved, cost of material and labor can be reduced, influence to underbridge is minimize, and the construction progress is accelerated. The simply-supported box girder construction technique of 40 m movable formwork method cast-in-situ railway passenger dedicated line is particularly analyzed.<strong></strong></p>

Simply-supported Box Girder Construction Technique of 40 m Movable Formwork Method Cast-in-Situ Railway Passenger Dedicated Line

<p>The movable formwork has the characteristics of light self weight, large bearing capacity, small rod type number, rapid assembling, and simplicity to construct. Therefore, when cast-in-situ concrete box girder is constructed, the moveable formwork has great meanings in cost reduction and project time limit shortening. By using this method, the difficulty that brackets cannot be distributed as the ground bearing capacity of bridges. Besides that, bridge sites is low is reasonably solved, cost of material and labor can be reduced, influence to underbridge is minimize, and the construction progress is accelerated. The simply-supported box girder construction technique of 40 m movable formwork method cast-in-situ railway passenger dedicated line is particularly analyzed.<strong></strong></p>

Experimental Research on Strength of GFRP Bars in Shield Engineering

Subway stations or shield wells are often built using steel reinforced concrete supporting structure materials. These concrete retaining structure materials must be destroyed before launching and receiving of shield, so, some security risks may arise during destroying, and time limit for project may be longer, and the structure strength may be weakened; there are the same problems in crossing the existing subsidiary structure. In the supporting structure, concrete supporting structure materials have been partially substituted by GFRP bars in shield engineering in the world. In order to study the mechanical properties of GFRP bars deeply, experimental research on strength of GFRP bars have been made, and some relation shapes between stress and shear strength have been discussed; all of these are expected to make some basis for the design of GFRP concrete in shield engineering.

Theoretical Analysis on Underwater Vibrating Compaction Technology of Scattering-Filling Rubble Stone Layer

This paper studied on the underwater vibrating compaction technology of scattering-filling rubble stone layer. At HongKong-Zhuhai-Macao bridge project, in order to satisfy the project time limit, underwater vibrating compaction technology with hydraulic hammer instead of conventional dynamic compaction technology was used to tamp scattering-filling rubble stone layer with no dead angle in a short time. Owing to the shortage of engineering example, the theoretical analysis was needed before field application. In this paper, the rubble stone layer and the vibration system were simplified to a mechanical model. Vibration system’s work on rubble stone was obtained by mathematical derivation, and effects of parameters were analyzed. The result shows that work on scattering-filling rubble stone layer increases with the increase of system quality, equivalent damping, exciting force and angular velocity and decreases with the increase of equivalent stiffness, water stiffness and buoyancy.

Engineering Practice of Segmental Assembly in Large Spancurved Bridge by Scaffolds

Part of Xiping railway south cave temple bridge segments are on easement curve. considering the project time limit and construction difficulties of large span curved bridge, the construction team adopted 64m soffit scaffolding composite column structure to assemble the precasted box girder segments ,this method can better solve the technical problems of nonuniform stress distribution in transverse beam and upright tubes of the bracket. Therefore, this paper introduces in details the bracket structure as well as the key construction technologies of segmental beam rand bracket. the experience can provide good reference for similar engineering.

Project Space Vision in retrospective

Project Space Vision aimed to influence long-term space policy-makers through documenting visions and fundamental priorities, as seen through the eyes of the post-Apollo generation, for the coming 50 years of space activities. Within a strict thirty-day project time limit, several thousand potential target contributors were addressed using the Internet. Within a few weeks time, resulting inputs were received internationally from young professionals linked to space to form the basis of the final analysis. The results fundamentally showed that some historically driving motivations, such as national security, prestige and technology development, were not well supported as major rationale for space activities. General misconceptions regarding the magnitude of space expenditures were further highlighted. Together with identification of the main perceived barriers for progress and specific priorities in more detailed areas, a set of basic components of a fundamental space policy for the future were eventually formulated.