论文部分内容阅读
钢波纹板拱结构以其优越的受力性能,其应用越来越广泛,但国内对其力学性能的研究较少,设计无规范可依,存在一定的盲目性。为研究其上覆土压力分布情况,进行一个半径0.5米的半圆弧拱结构进行土压力测试,通过与现有钢波纹板土压力计算结果进行分析,再通过推导相对刚度系数对土压力进行折减。推导出的相对刚度系数对钢波纹板拱结构的土压力计算具有适用性。土压力分布情况是:填土较低时土压力小于土柱计算值;填土较高时呈现土拱效应,其值大于土柱理论;采用相对刚度系数折减的土柱法计算值更符合实验数据,适用于结构设计。
Steel corrugated board arch structure with its superior performance, its application is more and more widely used, but its mechanical properties of less research, design without specification, there is a certain degree of blindness. In order to study the distribution of soil overburden pressure, a semi-circular arc arch with a radius of 0.5 m was used to test the earth pressure. The earth pressure was calculated by the calculation of the earth pressure of the existing steel corrugated board, and then the earth pressure was folded by deducing the relative stiffness coefficient Less. The derived relative stiffness coefficient has the applicability to the earth pressure calculation of steel corrugated arch structure. The earth pressure distribution is as follows: the earth pressure is lower than the calculated value of soil column when the earth filling is low; the soil arching effect appears when the earth filling is higher, its value is larger than soil column theory; the soil column method calculated by the relative stiffness coefficient more accords with Experimental data, suitable for structural design.