亭子口灌区一期工程超高槽墩渡槽设计研究

Research on Design of the Ultra-High Aqueduct Piers for the Tingzikou Irrigation Area Project(Phase 1)

亭子口灌区一期工程唐家沟渡槽总长700 m,跨越唐家沟、刘家沟、深沟3条沟谷,其最高槽墩达到50 m,工程设计施工难度较大。通过桥梁博士V4.4计算程序对该渡槽进行建模计算,同时对渡槽施工也进行了总结。计算结果显示,墩身强度、钢筋应力、墩体整体承载力、墩顶位移、基底应力、偏心距、基础抗倾覆、抗滑稳定、基础沉降均满足要求。结果表明,空心墩接扩大基础结构作为超高槽墩渡槽的支撑结构是满足要求的,同时超高槽墩施工过程中应密切关注施工安全问题,避免发生重大安全事故。通过对唐家沟渡槽的设计研究,总结出可供类似工程参考的经验。

The Tangjiagou aqueduct of the Tingzikou Irigation Area Project(Phase 1)is 700m long,spanning three valleys of Tangjiagou,Liujiagou,and Shengou.The highest pier of the aqueduct reaches up to 50 m,posing significant design and construction challenges.The aqueduct was modeled and calculated using the Bridge Doctor V4.4 software,and a summary of the construction process was also made.The calculation results show that the pier strength,reinforcement stress,overall bearing capacity,top displacement,base stress,eccentricity,foundation's resistance to overturning and sliding,as well as foundation settlement meet the requirements.The research indicates that the hollow pier with an enlarged base structure is adequate a the support for the ultra-high aqueduct pier.During the construction of the ultra--high pier,it is crucial to closely monitor the safety to prevent significant accidents.The study on design of the Tangjiagou aqueduct concludes with experience that can be referenced for similar projects.