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前言实践经验表明,建筑在软基上的船坞和水闸,往往在坞墙和闸墩上产生贯穿性裂缝,如图1所示。软基对结构温度变形的约束作用是很小的,所以底板一般不出现贯穿裂缝。但当坞墙或闸墩与底板之间存在相对温差时,由于受到底板的约束,在坞墙或闸墩上将产生拉应力,从而导致了贯穿裂缝。到目前为止还缺乏一个合适的计算方法,本文提出一个比较合理和实用的计算方法,以满足工程上的需要。
Foreword Practical experience shows that docks and sluices built on soft foundations often produce through cracks in the dock walls and piers, as shown in Figure 1. The effect of soft foundation on the temperature deformation of the structure is very small, so the bottom plate generally does not appear throughout the crack. However, when there is a relative temperature difference between the dock wall or the pier and the floor, tensile stress will be generated on the dock wall or pier due to the restriction of the floor, leading to the penetration through the crack. So far there is a lack of a suitable calculation method, this paper presents a more reasonable and practical calculation method to meet the engineering needs.