减少覆土地下室顶板梁配筋的设计措施  

Design measures of reducing reinforcement of earthed basement ceiling beam

作　　者：杨同新 

机构地区：[1]中冶长天国际工程有限责任公司建筑设计公司,湖南长沙410007

出　　处：《工程建设》2014年第6期26-30,共5页Engineering Construction

摘　　要：对于有覆土的地下室,因覆土荷载大、柱网跨度大、梁截面高度受限,其顶板梁的配筋往往较大。目前地下室通常与上部主体结构整体计算,计算参数与上部结构一致,使地下室的一些有利因素没有充分发挥。本文通过把地下室单独计算,并考虑地下室顶板梁的受压翼缘、梁端下部受压钢筋、次梁支点加虚柱计算次梁、框架梁端加腋等设计措施,在其他条件不变的情况下,可有效减少梁的配筋。计算过程只需将地下室单独调整参数,计算全部由计算程序自动完成,使设计具有可行性。In view of the earthed basement, due to large load of covering soil, large span of column grid and limited height of beam section, its ceiling reinforcement requirement is large. The basement at present is calculated integrally with the upper main structure, the calculation parameters are consistent with those of supper struc- ture, and the favorable factors of the basement are not exerted. The beam reinforce- ment can be effectively reduced by such design measures as separate calculation of basement, considering compression flange of basement ceiling beam, lower compres- sion reinforcement of beam end, secondary beam pivot plus virtual column for calcula- tion of secondary beam, and frame beam end haunching etc. Only the parameters of the basement will be separately adjusted in the calculation process, the calculation is automatically completed by the computation program,which makes the design feasible.

关 键 词：覆土地下室 设计措施 T型截面梁 受压钢筋 梁腋 

分 类 号：TU926[建筑科学—建筑设计及理论]