【摘要】 通过对涵洞顶面所受土体荷载的综合研究分析,得到符合涵洞顶面的实际受力情况、适合涵洞结构优化设计的土压力计算理论。首先对涵洞顶面所受土体荷载进行假定,然后对涵洞顶面荷载单元体进行简化分析,运用数学微积分手段进行理论推导,以得到涵洞纵向上涵顶不同位置的土压力计算公式,并且运用BAQUS有限元软件对该理论进行验证。通过对比分析传统的土柱计算理论与有限元模拟,证明此计算理论更加符合涵洞顶面的实际受力情况,运用此理论对涵洞结构尺寸进行优化,可以降低工程造价。更多还原

【Abstract】 According to the comprehensive research and analysis about the soil load on culvert top,the calculation method of earth pressure which reflects the actual stress on culvert top and suitable for optimal design of culvert was obtained.At first,the soil load on culvert top was assumed,and the calculation formula of earth pressure at different positions on top of culvert was deducted by using simplified analysis of load element of culvert top and theory of calculus.Then,the calculation method was verified by using BAQUS finite element software.Compared with traditional earth column calculation theory and finite element simulation,it shows that this calculation theory is more tally with the actual situation of the pressure on the top of culvert.The project cost could be reduced by using this theory to optimize the structure sizes of culvert.更多还原