移动式防洪系统力学性能及渗漏特性试验研究
发布时间：2019-03-21 09:19
【摘要】：移动式防洪系统是一种具备高安全性的标准化防洪方法,但在中国的城市防洪系统应用还不多,对其技术性能的研究不足是制约因素之一。该文依托某市的移动式防洪墙工程,设计移动式防洪墙综合试验基地,蓄水试验以及立柱加卸载试验,研究了移动式防洪系统的预埋件安装方法、受力性能和渗漏特性。结果表明,预埋件的直接安装法与预留槽孔法均能满足施工工艺和正常运行要求,但前者优于后者;蓄水后,移动式防洪墙存在渗漏现象,其与水位呈现指数的变化规律,当水位超过1.5 m时渗漏量会快速增大,达到1.7 m时渗漏量可达300 L/h;立柱加卸载(0~100 k N)过程中,首先会引起混凝土塑性变形,进而导致立柱产生残余位移,其受力过程表明立柱、预埋件与基座混凝土体系的破坏过程应是由预埋件两侧混凝土逐渐向迎水面发展。
[Abstract]:Mobile flood control system is a standardized flood control method with high safety, but the application of mobile flood control system in China is not many, and the research on its technical performance is one of the limiting factors. Based on the mobile flood control wall project in a city, this paper designs a mobile flood control wall comprehensive test base, a water storage test and a column loading and unloading test, and studies the installation method, mechanical performance and leakage characteristics of the embedded parts of the mobile flood control system. The results show that both the direct installation method and the reserved groove method can meet the requirements of construction technology and normal operation, but the former is better than the latter. When the water level is more than 1.5 m, the leakage will increase rapidly, and it can reach 300 L / h when the water level reaches 1.7 m. The leakage phenomenon of the mobile flood control wall after impoundment is shown as follows: (1) the leakage of the mobile flood control wall appears to change exponentially with the water level above 1.5 m; In the process of loading and unloading (0 ~ 100 k N), the plastic deformation of concrete will first be caused, and then the residual displacement of the column will be produced. The loading process of the column indicates that the column is subjected to force. The failure process of the pre-buried concrete system and the base concrete system should be gradually developed from the two sides of the embedded concrete to the surface of the water.
【作者单位】： 华北水利水电大学水利学院;河南省水环境治理与生态修复院士工作站;黑龙江省三江工程建设管理局;
【基金】：国家自然科学青年基金项目(51309101) 国家自然科学基金面上项目(51679092)
【分类号】：TV32;TV87
本文编号：2444800
[Abstract]:Mobile flood control system is a standardized flood control method with high safety, but the application of mobile flood control system in China is not many, and the research on its technical performance is one of the limiting factors. Based on the mobile flood control wall project in a city, this paper designs a mobile flood control wall comprehensive test base, a water storage test and a column loading and unloading test, and studies the installation method, mechanical performance and leakage characteristics of the embedded parts of the mobile flood control system. The results show that both the direct installation method and the reserved groove method can meet the requirements of construction technology and normal operation, but the former is better than the latter. When the water level is more than 1.5 m, the leakage will increase rapidly, and it can reach 300 L / h when the water level reaches 1.7 m. The leakage phenomenon of the mobile flood control wall after impoundment is shown as follows: (1) the leakage of the mobile flood control wall appears to change exponentially with the water level above 1.5 m; In the process of loading and unloading (0 ~ 100 k N), the plastic deformation of concrete will first be caused, and then the residual displacement of the column will be produced. The loading process of the column indicates that the column is subjected to force. The failure process of the pre-buried concrete system and the base concrete system should be gradually developed from the two sides of the embedded concrete to the surface of the water.
【作者单位】： 华北水利水电大学水利学院;河南省水环境治理与生态修复院士工作站;黑龙江省三江工程建设管理局;
【基金】：国家自然科学青年基金项目(51309101) 国家自然科学基金面上项目(51679092)
【分类号】：TV32;TV87
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