铁路桥梁新型球型钢支座防风沙试验研究-《高速铁路技术》

文章信息/Info

Title:: Research of Wind and Sand Proof Experiment for a New Type Spherical Steel Bearing of Railway Bridge

作者:: 宋晓东; 陈列; 薛鹏; 钟洪军; 1. 西南交通大学, 成都 610031;
2. 中铁二院工程集团有限责任公司, 成都 610031;
3. 成都亚佳工程新技术开发有限公司, 成都 610083

Author(s):: SONG Xiaodong; CHEN Lie; XUE Peng; ZHONG Hongjun; 1. Southwest Jiaotong University, Chengdu 610031, China;
2. China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, China;
3. Chengdu Alga Engineering New Technology Developmen Co., Ltd., Chengdu 610083, China

Keywords:: railway|bridges|new type|spherical steel bearing|sand-proof|test|service life

摘要:: 本文针对铁路穿越风沙环境地区时，普通桥梁支座使用寿命会严重缩短的现状，介绍了一种适应风沙环境的新型铁路桥梁球型钢支座，并为研究支座的防风沙性能，设计了具体的试验方法与步骤。通过与普通支座进行对比试验分析，验证了新型支座结构设计合理，防风沙方案可行，能够有效抵御风沙入侵，延长支座在风沙环境下的使用寿命。研究结果表明：（1）新型球型钢支座防风沙材料受风沙影响较小；（2）新型球型钢支座防风沙措施效果好，5 a加速周期内没有风沙入侵情况；（3）新型球型钢支座在风沙环境下的预期使用寿命可达30 a，普通球型支座仅为3 a。

Abstract:: In view of the fact that the service life of ordinary bridge bearings will be significantly shortened when they are used in railway sections passing through the sandy environment, this paper introduces a new type of spherical steel bearings for railway bridges that adapt to the sandy environment, and designs specific test methods and steps to study the sand-proof performance of bearings. Compared with ordinary bearings, it is verified that the structural design of the new bearings is reasonable, and the sand-proof scheme is feasible, which can effectively resist the invasion of wind and sand and prolong the service life of bearings in a windy and sandy environment. The results show that: (1) The new sand-proof material of spherical steel bearing is less affected by sand. (2) The new spherical steel bearings have good sand-proof performance, and there is no sand invasion in the 5-year accelerating period. (3) The expected service life of the new spherical steel bearings in the windy and sandy environment can reach 30 years, while that of the ordinary spherical bearings is only 3 years.