基于不同规范对大跨度连续刚构渡槽进行的验算对比分析  

Comparative Analysis of Checking Calculation of Different Specifications for Large-span Continuous Rigid Frame Aqueducts

作　　者：石瑶 高立宝 陈强 代富 王广巍 SHI Yao;GAO Libao;CHEN Qiang;DAI Fu;WANG Guangwei(PowerChina Chengdu Engineering Corporation Limited,Chengdu Sichuan 611130)

机构地区：[1]中国电建集团成都勘测设计研究院有限公司,四川成都611130

出　　处：《四川水力发电》2024年第2期42-46,51,共6页Sichuan Hydropower

摘　　要：鉴于预应力混凝土(PC)连续刚构渡槽具有受力性能优越、跨度大、承载力高等优点,亭子口灌区一期工程Ⅲ标粟家庙渡槽跨张南高速段布置了(67+120+67)m连续刚构渡槽。阐述了遵循相关公路规范和水工规范对渡槽上部结构进行的纵向验算,并分别从承载力极限状态和正常使用极限状态两方面对验算结果进行了分析。分析结果为:对承载力极限状态进行验算得知,公路规范比水工规范更为严格;而对于正常使用极限状态进行验算得知,水工规范比公路规范更为严格。因此得出以下结论:在连续刚构渡槽类水工构筑物设计中,需要同时遵循水工规范和公路规范要求,且须先满足水工规范要求,再按公路规范进行补充。In view of the advantages of prestressed concrete(PC)continuous rigid frame aqueducts,such as superior mechanical performance,large span,and high bearing capacity,the(67+120+67)m continuous rigid frame aqueduct was laid out at the section of the Bid III Sujiamiao Aqueduct of the Tingzikou Irrigation Area across the Zhangnan Expressway.This paper follows the specifications for the highway specifications and the hydraulic specifications to carry out the longitudinal checking calculation of the superstructure,and analyzes the checking results from the two aspects of the bearing capacity limit state and the normal service limit state respectively.The analysis results are as follows:the highway specifications are stricter than the hydraulic specifications through checking calculation of the ultimate state of bearing capacity,while for the normal use limit state check,the hydraulic specifications are stricter than the highway specifications.Therefore,it is con cluded that in the design of hydraulic structures such as continuous rigid frame aqueduct,it is necessary to comply with both the hydraulic specifications and the highway specifications requirements,and more importantly,it must first meet the hydraulic specifications,and then supplement according to the highway specifications.

关 键 词：亭子口灌区 连续刚构渡槽 水工规范 公路规范 承载力极限状态 正常使用极限状态 

分 类 号：TV91[水利工程—水利水电工程] TV76TV31TV39