河洋拱桥南拱座基础位置数值模拟优化分析  

Numerical Simulation and Optimization Analysis of Foundation Position of South Arch of Heyang Arch Bridge

作　　者：杜盼盼[1] 李其良 DU Panpan;LI Qiliang(School of Accounting,Xijing University,Xi'an 710123,China;CCCC First Highway Consultants Co.,LTD,Xi'an 710075,China)

机构地区：[1]西京学院会计学院,陕西西安710123 [2]中交第一公路勘察设计研究院有限公司,陕西西安710068

出　　处：《灾害学》2019年第A01期82-85,108,共5页Journal of Catastrophology

基　　金：陕西省教育厅专项科研计划项目“云计算环境智能化运维关键技术研究”(16JK2246)

摘　　要：峡谷区斜坡在我国西南地区广泛分布。20世纪以来,随着国家经济建设重点的转移,国家交通建设工程的重点也转向了西南多山地区,西南地区斜坡高度从百米到千米,斜坡平均坡度40°~80°。因而国家建设了大量的桥梁工程跨越该类高山峡谷。弄清楚峡谷斜坡的岩体变形破坏机制,正确评价其稳定性,才能合理利用岩体,达到桥梁工程的合理选线和设计。文章以南拱座基础位置的优化为目标,采用经验统计公式计算出桥荷载作用下的安全距离,作为初步的桥基位置,然后采用数值计算的手段,对不同位置拱座基础作用下的斜坡的应力场分布规律进行分析统计,校核水库蓄水后桥基斜坡的稳定性,最终确定河洋拱桥南拱座基础的合理位置。The slopes in the canyon area are widely distributed in the southwest of China.Since the 20th century,with the shift of national economic construction focus,the focus of national transportation construction projects has also shifted to mountainous areas in southwest China.The slope height in southwest China ranges from 100 meters to kilometers,with an average slope gradient of 40 ~80 degrees.As a result,a large number of bridge projects have been built across such high mountains and gorges.Understanding the deformation and failure mechanism of rock mass on the canyon slope and correctly evaluating its stability can make rational use of rock mass and achieve reasonable route selection and design of bridge engineering.Aiming at the optimization of the foundation position of the South arch abutment,this paper calculates the safe distance of the bridge under the action of the bridge load by using empirical statistical formula as the initial position of the bridge foundation.Then,by means of numerical calculation,the stress field distribution law of the slope under the action of the different position of the arch abutment foundation is analyzed and counted,and the reservoir water storage is checked.The stability of the slope of the rear bridge foundation determines the reasonable position of the South arch base of the Heyang arch bridge.

关 键 词：拱桥 拱座基础 数值模拟 安全距离 应力云图 优化分析 

分 类 号：TP182[自动化与计算机技术—控制理论与控制工程] X43[自动化与计算机技术—控制科学与工程]