五跨弹性支承连续深受弯梁的内力计算  

Calculation of Internal Forces of Elasticly Supported Continuous Deep Beams

作　　者：汪基伟[1] 

机构地区：[1]河海大学土木工程学院

出　　处：《河海大学学报（自然科学版）》1998年第3期109-111,共3页Journal of Hohai University(Natural Sciences)

摘　　要：给出界限刚度系数ξｂ和相对柔度系数η的概念，并通过有限元计算结果给出了ξｂ的数值．当连续梁的Ｋ／（Ｅｂ）≥ξｂ时，可按铰支连续梁计算；当连续梁的Ｋ／（Ｅｂ）＜ξｂ时，应按弹性支承连续梁计算．当相同跨数的弹性支承连续梁的相对柔度系数η相等时，其支座反力相同．编制弹性支承连续梁的内力计算表格只需跨数和相对柔度系数两个参数．In this paper the bound stiffness factor ξ b and relative flexibility factor η for continuous deep beams are presented,and the values of ξ b obtained by FEM are given.The internal forces for continuous deep beams can be calculated for simply supported ones when K/(Eb)≥ξ b and shoud be calculated for elasticly supported beams when K/(Eb)<ξ b .The internal forces of elasticly supported beams with equal number of spans are the same when values of η are equal,therefore,the calculating tables of internal forces can compiled with only two varibles—the span number and the relative flexibility factor.

关 键 词：弹性支承连续梁 相对柔度系数 内力计算 跨数 

分 类 号：TU323.301[建筑科学—结构工程]