%0 Journal Article
%T 整浇楼板对钢筋混凝土框架梁柱受力的影响分析<br>Effect of slab on the internal force of columns and beams of reinforced concrete frame
%A 王素裹
%A 周文琪
%J 福州大学学报(自然科学版)
%D 2017
%R 10.7631/issn.1000-2243.2017.04.0517
%X 建立多个钢筋混凝土空间框架有限元模型，研究不同位置去除板格对结构框架梁柱受力的影响. 考察各模型节点处梁柱塑性铰产生顺序，得到梁板组合作用对结构节点处梁柱塑性铰的影响规律. 结果表明：去除板格位于框架梁负弯矩端时，因参与作用的板筋减少、梁端实际抗弯能力降低，节点负弯矩端的梁铰比去除前更早产生；去除板格位于框架梁正弯矩端时，因节点左右梁端弯矩分配系数发生改变，梁负弯矩端分配的弯矩增大使塑性铰比去除前更早产生；去除楼板处因楼板在结构平面内的约束作用减弱，通过影响柱顶侧移和反弯点高度使柱顶、柱底弯矩发生改变，并影响柱顶扭矩，从而影响框架柱端的塑性铰开展.<br>Four different finite element models of RC frame structure are built to study the effect of slab with opening on the internal force of columns and beams. By investing the plastic hinge occurrence and reinforcement force of beams and columns，the influence law of combined action of beam and slab to plastic hinges is analyzed. It shows that when opening of slab is at the position of beam with hogging moment，the decrease of participating slab reinforcement make the actual flexural capacity of beam reduced，then the beam plastic hinges at hogging moment can appear earlier. That when opening of slab is at the position of beam with sagging moment，the beam plastic hinges at hogging moment can appear earlier by means of enlarged distributed hogging moment caused by the change of moment distribution coefficient. That the column plastic hinges are delayed by changing the column moment distribution between top and bottom because of the reducing of restraint at the top of column. The integral controlled action will cause torsion at some column tops and affect the appearance of column plastic hinges
%K 钢筋混凝土框架 现浇楼板 层间侧移 强柱弱梁 塑性铰 扭矩&lt
%K br&gt
%K reinforced concrete frame monolithic slab story lateral displacement strong column-weak beam plastic hinges torque
%U http://xbzrb.fzu.edu.cn/ch/reader/view_abstract.aspx?file_no=201704010&flag=1