Pneumatic formwork used in strengthening of structural elements during reconstruction of buildings and structures

Abstract

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.

Multi-Purpose Forming System for Strengthening Structural Elements of Buildings and Works

“…Considering that the modern forming systems used to strengthen structural elements are most commonly made of expensive materials (wood, metal) and should be replaced with their more economical counterparts, a hypothesis arose featuring artificial wood as the decking (board) material for the suggested transformer decking. Previously, the need for use of innovative technologies in the reconstruction of buildings and works was dicussed by the authors in [9,22].…”

“…The relevance of the selected topic is associated with an increasing scope of reconstruction of buildings and works, being one of the main aspects of sustainable development of urban space [1][2][3] and provision of housing [4][5][6] for urban population. The rationality and comfort of municipal and any other residential environment are a function of improved performance parameters (also accomplished through overhaul) and enhanced operational and environmental safety of existing buildings and works [7,8].…”

“…The reconstruction and overhaul of buildings and works involve the strengthening or rehabilitation of their main load-bearing structural elements: foundations, columns, walls etc. [9].…”

Efficiency of Using PERI Formwork in Low-Rise Buildings Project

“…Using the PERI system formwork can minimize costs because it does not use a lot of labor. The labor intensity in the installation and disassembly of formwork is much lower than conventional wooden formwork [31]. Installing the PERI formwork system is relatively easy, producing high productivity.…”

A state of the art on the structural performance of fabric formwork systems

“…They presented construction approaches and design methodology too. Abramyan et al (2017) described the design, installation, and dismantling techniques of a reusable multipurpose mobile pneumatic rubber-fabric formwork systems. They showed that installation and dismantling of such formworks are much easier than conventional formworks.…”