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Experimental Research and Finite Element Analysis of Timber Beam-column Connection of Tibetan Ancient Architecture

Author: ZuoHuiChun
Tutor: YangNa
School: Beijing Jiaotong University
Course: Structural Engineering
Keywords: Tibetan ancient architecture Timber beam-column connection Full-scale static test Transfer mechanism Rotating performance of joint Numerical simulation of hysteretic behavior
CLC: TU366.2
Type: Master's thesis
Year: 2011
Downloads: 56
Quote: 1
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Abstract


ABSTRACT: The historical significance, religious significance and artistic value of ancient Tibetan architecture have always been the focuses of world attention. Many Tibetan buildings were built long years ago, so there are already a large number of damaged phenomenon in the internal structure. Under this premise, it is particularly important to analysis structural properties of ancient buildings in order to take reasonable protective measures. And the performance of the joint is the basis and key for understanding mechanical behavior of the whole structure. The recently study is mainly focused on the architectural style, decorative arts and religious meaning. At the same time the study on analysis of the structural performance is few.In this paper, a typical beam-column connection is taken as the research object. Static test and corresponding numerical simulation are carried out to analysis the static properties of the connection. Combining test results and numerical results, moment-rotation curve model of joint is extracted, influence law of related factors and transfer mechanism cf the connection are summed up. In addition, hysteretic behavior is simulated. The main contents include the following aspects:Firstly, based on the on-the-spot investigation structural form of ancient Tibetan architecture is described. Composition and practices of timber frame are focused on and the object of study in this paper is determined. The loading and constraints of structural prototype are simplified to establish corresponding analysis models.Secondly, two groups of static test are carried out based on analysis models. Transfer mechanism and failure modes under vertical load of beam-column connection are analyzed in the first group test. Rotational behavior of the joints is analyzed in the second group test. Taking static tests as the basis, the corresponding numerical simulation is carried out. Combining the results of the two aspects, stress states of composition are explained and M-θmodel is obtained. The effect of Gongmu’s length, dowel’s position to initial rotational stiffness is studied. Stiffness degradation rule under cyclic loading is obtained.Thirdly, hysteretic behavior is simulated. Stress states, hysteretic curve, skeleton curve, restoring force model of joint are obtained. Stiffness degradation rule and energy dissipation are analyzed. The results of numerical simulation are compared with existing pseudo-dynamic test. 113 diagrams,22 charts,54 references

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CLC: > Industrial Technology > Building Science > Building structure > The structure of the soil, brick, stone,bamboo,wood > Bamboo,wood structure > Wooden structure
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