论文部分内容阅读
土的模量随深度成线性变化,顶部为自由端且埋设深度h小于2.5α时,桥梁基础构件的受力状态在现有规范中通常将其假定为按刚性基础那样受力。基底的抵抗弯矩对刚性基础顶端的水平位移有显著影响,而在《规范》的刚性基础计算公式中未考虑这一影响。因此本文推导了考虑基底影响的刚性基础计算公式,并引入了新的修正系数来计算桥墩顶端的水平位移。
As the modulus of soil changes linearly with depth and the top is the free end and the buried depth h is less than 2.5α, the stress state of the bridge foundation member is usually assumed in the existing codes to be as rigid as the foundation. The moment of resistance of the foundation has a significant effect on the horizontal displacement of the top of the rigid foundation, which is not taken into account in the rigid foundation calculations of the Code. Therefore, a rigid foundation calculation formula considering the influence of substrate is deduced and a new correction coefficient is introduced to calculate the horizontal displacement of the pier top.