震损遗址砖混结构房屋保护性加固方法研究

Study on protective reinforcement methods for post-seismic damaged masonry concrete structure buildings

汶川地震中,北川县城区内大部分房屋破坏严重。对曲山小学砖混结构教学楼现状进行勘察,给出了其震损特征;借鉴文物加固原则,结合已有震损房屋的加固方法,提出了遗址房屋保护性加固方案和施工流程。采用MIDAS有限元软件对加固后的曲山小学教学楼进行了应力和位移分析。结果表明,加固后能确保结构在7度(0.1g)地震作用下不倒塌。对加固方案的经济性分析表明,采用所提出的加固方案可取得较好的经济效果。

In Wenchuan Earthquake, most buildings were severely damaged in Beiehuan Town. The status quo of masonry concrete structure teaching building of Qushan Primary School was surveyed and its seismic damages were provided. Based on the strengthening principles of cultural relics, combining with reinforcement methods of existing seismic damaged buildings, a protective reinforcement plan and construction process for post-seismic damaged building were formed. Finite element software of MIDAS was used to carry out stress and displacement analyses on post-reinforcement teaching building of Qushan Primary School. The results show that reinforcement can ensure the structure does not collapse under the earthquake with seismic intensity of 7 degrees （0. 1g）. The economic analysis on reinforcement scheme shows that proposed reinforcement scheme is economic.