双层箱型结构不平衡剪力的分配计算方法  

Unbalanced Shear Distribution Calculation of Double Layer Box shaped Structure

作　　者：钱祖宾[1] 沈建霞[2] 单海春[1] 

机构地区：[1]江苏省水利勘测设计研究院有限公司,江苏扬州225217 [2]江苏省交通科学研究院股份有限公司,江苏南京210017

出　　处：《人民黄河》2014年第7期112-114,共3页Yellow River

摘　　要：对于复杂结构的不平衡剪力分配,目前尚没有成熟的计算方法,通常根据工程设计经验来确定结构断面各部位不平衡剪力分配比例,但该方法影响结构内力的计算精度。基于截面剪应力计算公式,通过积分的方法分别推导了双层箱型结构底板、中板、顶板及墩墙不平衡剪力分配系数的计算公式,从而可方便求出结构各部位所承担的不平衡剪力,该方法提高了工程结构内力计算的精确度,通过工程实例验证了所推导公式的适用性。It is quite difficult to compute the unbalanced shear distribution of the complex structures. For these complex structures,the acquirement of the unbalanced shear distribution coefficient at different parts mainly depends on the experiences of designers. However,the method has a low precision in computing the stress of structures. In this paper,an integration method was proposed to compute the unbalanced shear distribution coef-ficient at different parts of double-layer box-shaped structures. These parts covered the bottom plate,the medium plate,the top plate,and the pier wall. So the unbalanced shear distribution of different parts could be obtained easily. The proposed method could improve the precision in compu-ting the stress of structures. Several Examples were also given to evaluate its applicability.

关 键 词：双层箱型结构 不平衡剪力 分配系数 截面惯性矩 截面剪应力 

分 类 号：TV314[水利工程—水工结构工程]