装置材料对防水试验中密封垫性能的影响

发布时间：2018-07-29 11:19

【摘要】：为研究管片密封垫防水试验中不同装置材料下密封垫性能的差异,采用弹性力学理论对钢制装置和混凝土装置下密封垫的耐水压力和装配力进行研究。以管片接缝密封中常用的三元乙丙密封垫为研究对象,对钢制装置和混凝土装置下的密封垫进行防水试验,研究2种不同装置下密封垫的装配力和耐水压力与张开量的关系。研究结果表明:1)钢制装置下密封垫的竖向应力比混凝土装置下密封垫的竖向应力大,导致其耐水压力高于混凝土装置;2)2种装置得出的装配力-张开量和耐水压力-张开量曲线变化规律相似;3)采用钢制装置代替混凝土装置进行混凝土管片密封垫的防水试验时,应将张开量减小一定的数值;4)在密封垫的防水试验中应尽量采用混凝土装置进行测试;5)采用钢制装置代替混凝土装置进行混凝土管片密封垫耐水压力测试时,应对试验数据进行平移转换。
[Abstract]:In order to study the difference of the performance of seal gasket under different equipment materials in the waterproof test of segment seal gasket, the water pressure and assembly force of seal gasket under steel and concrete devices were studied by elastic mechanics theory. Taking the ternary ethylene-propylene gasket, which is commonly used in segment joint sealing, as the research object, the waterproofing test was carried out on the gasket under the steel and concrete devices, and the relationship between the assembly force and water resistance pressure and the opening quantity of the gasket under two different devices was studied. The results show that the vertical stress of the gasket under the steel device is greater than that under the concrete device. As a result, its water resistance pressure is higher than that of concrete device (2) the assembly force, opening quantity and water resistance pressure curve obtained by two kinds of devices are similar to each other (3) when steel device is used instead of concrete device to carry out waterproof test of concrete segment seal gasket, The opening should be reduced by a certain value (4) the concrete device should be used as far as possible in the waterproofing test of the gasket, and the steel device should be used instead of the concrete device to test the water pressure of the sealing pad of the concrete segment. Translation of test data shall be performed.
【作者单位】：中国矿业大学(北京)力学与建筑工程学院;
【基金】：国家科技支撑计划子课题(2013BAB10B02-4) 联合资助基金(U1261212)
【分类号】：U453.6;U455.43

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