可傳遞壓應(yīng)力和剪應(yīng)力的咬合式地下室樓蓋變形縫設(shè)計
鄭建東，楊顯峰
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（廣州瀚華建筑設(shè)計有限公司， 廣州 510655）
［摘要］介紹了一種凹凸折板咬合式變形縫構(gòu)造。通過對3個不同簡化模型進(jìn)行應(yīng)力分析，考察了凹凸折板咬合式變形縫對樓蓋拉應(yīng)力的釋放效果；同時為考察設(shè)置凹凸折板咬合式變形縫結(jié)構(gòu)地下室樓蓋作為上部結(jié)構(gòu)嵌固端的受力性能，采用SAP2000軟件對上述3個不同簡化模型進(jìn)行小震非線性動力時程分析。結(jié)果表明，該變形縫在釋放超長地下室樓蓋拉應(yīng)力同時，可以傳遞其兩側(cè)樓蓋的壓應(yīng)力、剪應(yīng)力，以滿足地下室樓蓋作為上部結(jié)構(gòu)嵌固端的要求；同時，也使該樓蓋可以作為地下室兩側(cè)壁的水平支撐來平衡地下室兩側(cè)水土壓力。最后，對凹凸折板咬合式變形縫在實(shí)際工程中的應(yīng)用效果進(jìn)行了介紹。［關(guān)鍵詞］凹凸折板咬合式變形縫; 超長地下室; 水平支撐中圖分類號：TU318.2 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2016)12-0033-04
Design of bite-type basement floor structure deformation joint transferring compressive stress and shear stressZheng Jiandong1, Yang Xianfeng2（Guangzhou Hanhua Architects+Engineers Ltd., Guangzhou 510655, China）Abstract: A concave convex folded plate bite-type deformation joint structure was introduced. Based on stress analysis on three different simplified models, the release effect of the concave convex folded plate bite-type deformation joint structure on floor tensile stress was investigated. At the same time, in order to inspect mechanical performance of setting concave convex folded plate bite-type deformation joints as the embedded end for upper structure, SAP2000 software was used to carry out nonlinear dynamic time-history analysis on the three different simplified models under frequent earthquake. Results show that the deformation joint can release tensile stress of super-long basement floor and can transfer the compressive stress and shear stress of floors on both sides at the same time, to meet the requirement of making basement floor as the embedded end of upper structure. At the same time, the floor can be used as the horizontal support for side walls of the basement to balance the soil and water pressure on both sides of the basement. Finally, the application effect of concave convex folded plate bite-type deformation joint in practical engineering was introduced.Keywords: concave convex folded plate bite-type deformation joint; super-long basement; horizontal support
作者簡介：鄭建東，教授級高級工程師，一級注冊結(jié)構(gòu)工程師，注冊土木工程師（巖土），Email:zhengjiandong@gzhanhua.com。
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