预应力混凝土双向受弯构件的抗裂度  

CRACK RESISTANCE OF PRESTRESSED CONCRETE MEMBERS UNDER BIAXIAL BENDING

作　　者：何高勖[1] 虞锦晖[1] 吴小慧 

机构地区：[1]南昌大学 [2]鹭江职业大学

出　　处：《土木工程学报》1995年第3期23-31,共9页China Civil Engineering Journal

摘　　要：根据平截面假定,计算了预应力混凝土双向受弯构件正截面的抗裂度.为了便于实用,将矩形截面双向受弯问题转换成等效的梭形截面单弯问题,并推导了抗裂度的计算表达式.十七根试验梁的试验值和按两种方法计算的理论值符合程度良好.On the basis of the plane section assumption, this paper presents the theoretical approach for calculating the crack resistance of the prestressed concrete beams subjected to biaxial bending. For sake of convenient application, the rectangular section under biaxial bending is transformed to an equivalent shuttle section subjected to general flexure and its calcu lating equations of the cracking moments are presented. The theoretical predictions obtained from these two methods agree well with the test results of seventeen specimens.

关 键 词：预应力混凝土 双向受弯构件 抗裂度 矩形截面 

分 类 号：TU378.01[建筑科学—结构工程]