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水工建筑物是由许多部分所组成的,各个部分的功能、所承担的外力以及结构形状各不相同,不宜互相牵连。在施工中也必须按工程的特性,施工的可能和方便,按层次浇筑,最后形成整体,此外,还必须考虑混凝土在凝结与硬化过程中的收缩以及温度的影响,否则会产生不规则的裂纹。为了妥善处理这些问题,常用下列四种缝来解决:(1)沉陷缝(也称膨胀缝);(2)收缩缝;(3)控制缝;(4)建筑缝。
Hydraulic structures are composed of many parts, each part of the function, the external force and the structure of the different shapes, should not be implicated. In the construction must also be based on the characteristics of the project, the possibility of construction and convenient, according to the level of pouring, and finally the formation of the whole, in addition, concrete condensation and hardening process must also consider the impact of shrinkage and temperature, otherwise it will produce irregular cracks . In order to properly handle these problems, the following four kinds of stitches are often used to solve: (1) subsidence (also known as expansion joints); (2) contraction joints; (3) control joints; and (4) construction joints.