钢筋网喷射混凝土板墙加固砖墙试验研究

Experimental research of brick wall strengthened by steel fabric shotcrete wall

由于砖砌体的抗拉、抗剪强度都很低,抗震能力较差,在地震作用下破坏非常严重,近年来大批砖砌体结构需要进行抗震加固与改造。钢筋网喷射混凝土板墙加固方法因易于施工、造价低、加固效果好等优点,在砌体结构抗震加固中被广泛使用。基于钢筋网喷射混凝土板墙加固试验,研究了砖墙采用钢筋网喷射混凝土板墙加固后的力学性能、破坏形态及延性等,提出了刚度与承载力计算方法,可为采用钢筋网喷射混凝土板墙加固砖墙的设计方法提供依据和参考。

In recent years, many brick masonry structure projects need seismic strengthening and reconstruction due to its low tensile strength, low shear strength, poor seismic ability and serious damage in the earthquake. The strengthening method of steel fabric shotcrete wall, which has advantages of easy construction, low cost and good strengthening effects, is widely used in seismic strengthening of brick masonry structures. Based on the tests of steel fabric shotcrete wall strengthening, mechanical properties, failure pattern and ductility were studied after the strengthening construction. Calculation methods of stiffness and bearing capacity of steel fabric shotcrete wall strengthening were put forward. The method provides basis and reference for the design of brick wall strengthened by steel fabric shotcrete wall.