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生态复合墙体框格单元破坏模式研究
doi: 10.13204/j.gyjz201403016
STUDY ON FAILURE MODES OF FUNDAMENTAL ELEMENT OF ECOLOGICAL COMPOSITE WALL
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摘要: 基于1/2比例生态复合墙体框格单元的试验,给出了不同因素的框格单元承载力与破坏模式的对比分析,提出框格单元的合理破坏模式,对不同相对刚度与强度的框格单元建立非线性数值扩展分析模型,进而对基于合理破坏模式的框格单元相对刚度与相对强度进行分析。试验研究与数值分析结果表明:各种不同框格单元的破坏模式也不相同,框格单元的合理破坏模式为砌块角部压碎破坏,为保证框格单元发生砌块角部压碎破坏,框格单元相对刚度的合理取值范围为2.14h3.47,相对强度的合理取值应满足4.66n c8.04。Abstract: By the study on the test of 1 /2 scale fundamental element of ecological composite wall，it was compared different factors of bearing capacity and failure mode of fundamentdal element． Then the reasonable failure modes of the fundamental element were proposed． A nonlinear finite element model was set up and relative stiffness and relative strength of the fundamental element were analyzed based on the reasonable failure modes on the basis of the test results and numerical analysis． The study on the test and the analysis show that the reasonable failure modes of fundamental element are the corner crush of block ( CC failure modes)． In order to make the CC failure modes occurred，the reasonable value of the relative stiffness of fundamental element is 2. 14 h 3. 47，and the reasonable value of the relative strength fundamental element is 4. 66nc8. 04．
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