论文部分内容阅读
目前,我国倾斜构件普遍采用钢模板平法生产,钢底模的骨架杆件按传统结构方案的纵横轴线布置进行设计。实践证明,这种结构方案不符合模板在运行中的实际受力状况,抗弯刚度有余,抗扭刚度不足,而且用钢量偏大。采用这样的传统底板,导致制品超过规范允许的平整度要求,使构件质量下降,甚至出现工艺裂缝。为了选择底模的合理结构型式,我们在对底模的支承状态进行分析的基础上,提出五种结构型式的底板进行变形对比试验,现将分析和试验结果分述如下。一、底模使用时支承状态的分析在我国,生产水平较高的构件厂生产工艺基本上采用两种方式:一种是传送流水进窑养护,另一种是机组流水坑式养护。不
At present, China’s inclined members generally adopt the steel template production method, and the skeleton members of the steel bottom mold are designed according to the vertical and horizontal axis layout of the traditional structural scheme. Practice has proved that this kind of structural scheme does not meet the actual stress condition of the template in operation, the flexural rigidity is more than enough, the torsional stiffness is insufficient, and the amount of steel used is too large. The use of such a conventional base plate results in the product exceeding the allowable flatness requirements of the specification, resulting in a reduction in the quality of the component and even the occurrence of process cracks. In order to select the reasonable structure type of the bottom mold, based on the analysis of the support state of the bottom mold, five types of structural bottom plates are put forward to conduct the deformation comparison test. The analysis and test results are summarized as follows. First, the analysis of the support mode when the bottom mold is used In our country, the production process of the component factory with higher production level basically adopts two methods: one is to transport the flowing water into the kiln for conservation, and the other is to maintain the water flow pit type of the unit. Do not