Abstract
The paper discusses the importance of building reconstruction and the need for improving the available formwork systems used for strengthening of structural elements during reconstruction. Citing the results of the analysis of the Russian and foreign scientific publications, the authors emphasize the necessity of replacing costly wooden formworks with high-technology reusable all-purpose and mobile formwork systems. Considering that such requirements are met by rubber-fabric formworks, the authors have developed a pneumatic formwork and showed by way of experiment that the labor intensity of installation and dismantling of such formworks is much lower as compared with conventional wooden formworks, which makes this research original. The paper further describes the design of the suggested formwork and the installation and dismantling techniques. The versatility of the formwork is confirmed by its ability to easily adapt to any structural elements (pier foundations, columns, beams etc.) ensured by the flexibility of rubber-fabric materials. This system can be used for structural elements having various geometric shapes (round, rectangle, trapezoidal) and dimensions. Their transportability is warranted not only by the dimensions and flexibility, but also by a small weight. The use of pneumatic formworks contributes to resolving the problem of conservation such valuable natural material as wood.
Highlights
The increasing scopes of reconstruction of buildings and structures all around the world necessitate the invention of fundamentally new approaches to the performance of construction and installation works
The choice of a particular method always depends on the condition of a respective structural element and the specifics of the technology used for the performance of the works
2.1 Goals and tasks Assuming that reconstruction is required to be based on a technology-savvy work process, which can be achieved through a reduction in its labor intensity, the goal of this research is to identify the methods for reducing labor inputs associated with the installation and dismantling of formworks during strengthening of certain structural elements using extension technologies, and for ensuring a high turnaround capacity of formwork systems
Summary
The increasing scopes of reconstruction of buildings and structures all around the world necessitate the invention of fundamentally new approaches to the performance of construction and installation works. This shift is facilitated by the use of new high-strength materials, such as composite reinforcement, fiber glass, microcement, composite concrete etc. The choice of a particular method always depends on the condition of a respective structural element and the specifics of the technology used for the performance of the works
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