砖墙用水泥砂浆面层加固的抗震受剪承载力计算方法探讨

Discussion on Calculation Methods of Seismic Shear Capacity of Masonry Brick Wall Reinforced with Cement Mortar Splint

水泥砂浆面层加固法是砌体结构加固中最常使用的方法之一,《砌体结构加固设计规范》(GB50702-2011)与《建筑抗震加固技术规程》(JGJ 116-2009)都给出了水泥砂浆面层加固法的计算公式,但二者计算结果存在较大差异,双面加固时最大差异可达80.31%,单面加固时可达56.86%;根据13个基于试验结果提出的水泥砂浆面层加固砖墙抗剪承载力计算公式,对规范、规程公式的适用性进行了讨论,给出了部分建议,可供工程技术人员参考。

Strengthening with cement mortar splint is one of the most frequently used methods in the reinforcement of masonry structure. The calculation methods of strengthening with cement mortar splint are both given in Code for design of strengthening of masonry structure （GB50702-2011 ） and Technical specification for seismic strengthening of buildings （JGJl16-2009）, but there is difference between two calculation results. The difference is up to 80. 13% when use double sided strengthening, and up to 56.86% when use single sided strengthening. According to the 13 formulas which are proposed on the basis of experiment results for calculating the shear strength of masonry wall strengthened with cement mortar splint, some suggestions which can be a reference for the engineering design personnel are given in this paper.