混合结构房屋基础的底面尺寸修正  

Revised Size of Foundation Base for Building with Brick Masonry Walls and R.C. Floors

作　　者：刘正保[1] 杨庆年[1] 蔡振涛 裴艳芳 

机构地区：[1]南阳理工学院土木工程系,河南南阳473004 [2]河南省第三建筑工程公司,河南洛阳471003 [3]河南省安装集团公司,河南洛阳471003

出　　处：《河南科技大学学报（自然科学版）》2004年第6期66-69,共4页Journal of Henan University of Science And Technology:Natural Science

基　　金：河南省教育厅科研基金资助项目(1999560004)

摘　　要：混合结构房屋基础一般采用条形基础,按各墙体承受的荷载分别计算基础宽度。由于纵、横墙体交叉处存在基础面积重叠问题,基础底面尺寸应作适当修正。本文按基础底面压应力的分布特点确定基础底面的合理修正范围,导出了修正系数K的计算公式。计算表明,对于纵、横墙体相交的"┼"型节点,K≤1+2^(1/2);"┴"型或"├"型节点,K≤1/2(1+5^(1/2));而"L"型节点可不修正。该修正方法简便、实用、可靠,可直接用于基础设计和施工。Strip foundation is commonly adopted in buildings with brick masonry walls and reinforced concrete floors and the base width is computed according to the loads to which the walls are subjected. Because of the foundation area superposition in cross walls the foundation size should be revised. Based on stress distribution from compressive load in walls, the revised size and coefficient of foundation base have been derived. The computation indicates K≤1+2^(1/2) for'┼' linkage area, K≤(1 +5^(1/2)) for '┴'or '├' linkage area,no revision for'L'linkage area.Therevised methods are always simple and practical. The simple and reliable results can be directly applied in foundation design and construction.

关 键 词：底面尺寸 墙体 混合结构 横墙 房屋 节点 基础 面积 修正 合理 

分 类 号：TU470.3[建筑科学—结构工程] TU31[建筑科学—土工工程]