山东建筑大学学报2017，Vol.32Issue(3)：238-244,7.
施工变形对逆作法结构的影响分析
Analysis of influence of construction deformation on construction of top-down method
摘要
Abstract
Improper construction during construction of top-down method will cause the uneven settlement of column pile and column inclination.Research on the influence of construction deformation on the construction of the top-down method can provide a theoretical basis for the topdown method of underground structure vertical supporting system.Based on the foundation project for Xuri high-rise apartment building in Rongcheng,by using the code formula and the method of the elastic support model,the paper studies the influence of construction deformation on vertical bearing capacity of construction of top-down method,analyzes the upper structure's internal force variation and the changes of maximum subsidence point position for vertical pile's uneven settlement and maximum moment and shear on the beam.The results show that,when the horizontal displacement of supporting columns is 150mm,the supporting column vertical bearing capacity will reduce by half,while the second-order effects will further weaken the vertical bearing capacity of the columns;uneven settlement on the middle column has the biggest influence on internal force,displacement of adjoining columns and bearing capacity,stability of the structure than other columns.Since the uneven settlement on the middle column gradually reduces,the biggest internal force transfer to the middle of bean.关键词
逆作法结构/施工变形/承载力/沉降Key words
construction of top-down method/construction deformation/bearing capacity/settlement分类
建筑与水利引用本文复制引用
张志浩,魏焕卫,孔军,陈朝伟,卜飒..施工变形对逆作法结构的影响分析[J].山东建筑大学学报,2017,32(3):238-244,7.基金项目
国家自然科学基金项目(41272281) （41272281）
山东省自然科学基金项目(ZR2012EEM016) （ZR2012EEM016）
