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The Study of the Construction Optimal Design for Multi-storey Formwork Supports System

Author: WangWei
Tutor: YingHuiQing
School: Tongji University
Course: Structural Engineering
Keywords: Multilayer template bracket system Time-varying structure Load distribution factor Bracket internal forces Floor internal forces
CLC: TU755.2
Type: Master's thesis
Year: 2007
Downloads: 193
Quote: 3
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Abstract


With the rapid development of the construction engineering technology, accelerating the progress of the project, Falsework under the main structure of concrete in the construction of high-rise buildings have not yet reached the design strength requirement is usually on the upper main structure construction. It is mostly used the multilayer the template stent system, the construction cycle is generally reached one week layer. However, if the the multilayer template bracket system configuration unreasonable, dismantle to improper or concrete early conservation bad scaffold collapse accident is likely to result in the actual engineering of such incidents and the construction phase the floor cracking phenomenon is not uncommon, serious impact on construction safety and construction progress. Therefore, the study of multilayer template bracket system, select a reasonable construction scheme, avoid engineering accidents, shorten the construction period is of great significance. New concrete gravity load the multilayer template stent system, as well as construction loads (including construction dead loads and construction live load), must be through the the multilayer template scaffold pass to the following previously been pouring completed several layers floor. At each stage, the load by concrete variable structure and bracket system consisting of temporary bearer system commitments, concrete material properties of the time-varying system formwork layers, the construction cycle is closely related to that of concrete structures in the construction process, and the stent internal forces over time and Falsework change. This article describes the template bracket system, contrast is the most common of several templates stent system, given the advantages and disadvantages of the different systems and their application conditions and to investigate the the multilayer template stent system optimization problem, pointed out that the template works to achieve the overall Optimization Approach. In this paper, based on the analysis of the multilayer Falsework the theory, establish the the ANSYS numerical analysis model, the concrete structure construction process simulation analysis, internal forces within the multilayer template stent system in a construction cycle curve shows a multi-layer template The stent system is a time-varying system. Meanwhile, research the Falsework within the system interact with the concrete floor, common working relationship and its load transfer law to come to the demolition of the underlying Falsework time influence of the bearing capacity of the floor structure. Applicable to multilayer template stent system and the establishment of a simplified calculation model, and compared with the foreign GK model and numerical analysis model, given the the load partition coefficient of the the the multilayer template bracket system convenient to use, and available for engineering and technical personnel Reference .

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CLC: > Industrial Technology > Building Science > Construction > The project and the type of work > Concrete and reinforced concrete works > Template project
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