论文部分内容阅读
用分层总和法进行基础沉降计算存在着许多缺点,计算中未考虑基坑开挖时土的卸荷回弹就是其一,在参考文献中提到了对沉降计算的改进,可是由于种种原因在实际中还没有得到应用。在已批准的建筑法规中建议:“当基础埋深较大时(基坑深度等于或大于5米),进行沉降计算要考虑土的卸荷回弹”。下面叙述建造于开挖基坑中基础沉降的计算方法,这种方法近似地相应于地基的实际作用。研究基坑开挖及随后的基础浇筑和构筑物建造时地基土应力一变形状态,主要考虑的是轴向应力。这就是说在建筑法规中所采用的这一条基本假定依然是有效的。作用在基础底面的压力,包括有效荷
There are many shortcomings in the calculation of foundation settlement by using the stratified summation method. The calculation does not take into account the unloading and resilience of the soil when excavating the foundation pit. It is mentioned in the reference that the settlement calculation is improved, but for various reasons It has not yet been applied in practice. In the approved building code, it is recommended that: “When the foundation depth is large (the depth of the foundation pit is equal to or greater than 5 meters), the calculation of the settlement should take into account the unloading rebound of the soil.” The following is a description of the calculation method for foundation settlement built in excavation pits. This method corresponds approximately to the actual effect of the foundation. Study the stress state of the foundation soil when excavating the foundation pit and the subsequent foundation pouring and building construction. The main consideration is axial stress. This means that the basic assumptions used in building regulations are still valid. The pressure acting on the bottom surface of the foundation, including the payload