施工期地下厂房岩壁吊车梁安全性态初步分析  

Preliminary analysis on safety state of rock wall crane beam in underground powerhouse during construction period

作　　者：王晓强 吴露 唐欢欢 WANG Xiaoqiang;WU Lu;TANG Huanhuan(PowerChina Northwest Engi-neering Co.,Ltd.)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,陕西西安71000

出　　处：《大坝与安全》2023年第1期33-36,共4页Dam & Safety

摘　　要：某水电站地下厂房岩壁吊车梁为钢筋混凝土悬臂梁,由三排锚杆锚固在边墙上。通过重点分析各监测断面围岩面接缝开合度及围岩与混凝土梁体结合处锚杆应力变形,结合各断面围岩内锚杆应力和梁体混凝土钢筋应力,以及巡视检查结果,综合评价岩壁吊车梁荷载试验前的安全可靠性,为岩壁吊车梁荷载试验提供依据。rThe rock wall crane beam in underground powerhouse ofa hydropowerstationisreinforced con⁃crete cantilever beam,which is anchored on the side wall by three rows of anchor bolts.By focus on the analysis of the joint opening on surrounding rock surface and the stress deformation of anchor bolts at the junction of surrounding rock and concrete beam,combined with the stress of anchor bolts in sur⁃rounding rock and the beam concrete reinforcement stress at each monitoring section,as well as the pa⁃trol inspection results,the safety and reliability of rock wall crane beam before load test are comprehen⁃sively evaluated,which can provide basis for the load test of rock wall crane beam.

关 键 词：岩壁吊车梁 锚杆 监测断面 锚杆应力计 钢筋计 测缝计 

分 类 号：TV731[水利工程—水利水电工程]