摘要
以深圳地铁12号线二期工程沙埔站为研究背景,该地铁车站基坑维护结构完工后,需要在基坑维护结构角部设置临时便道,从而保证施工现场车辆及人员的通行安全。针对该施工现场的安全要求采用钢架组合结构进行临时便道的修建,后采用三维有限差分软件FLAC3D,对临时便道结构进行了模拟计算分析,结果显示,在最不利荷载条件下,分析了牛腿三角支撑和钢板角钢焊接支撑方案变形量对比,研究发现牛腿三角支撑最大变形量仅仅0.5776mm,钢板角钢焊接最大变形量为0.403mm,两者均符合安全变形标准。但是结合施工难易程度及施工成本综合考虑后得出,采用钢板角钢焊接的方案更符合现场施工。
Taking Shapu Station of Shenzhen Metro Line 12 Phase II project as the research background,after the completion of the foundation pit maintenance structure of the subway station,temporary access roads need to be set up at the corners of the foundation pit maintenance structure to ensure the safety of vehicles and personnel on the construction site.According to the safety requirements of the construction site,the steel frame composite structure was used to build the temporary access road,and then the three-dimensional finite difference software FLAC3D was used to simulate the calculation and analysis of the temporary access road structure.The results showed that under the most unfavorable load conditions,the deformation of the bracket triangle support and the steel plate angle steel welding support was compared.The research found that the maximum deformation of the bracket triangle support was only 0.5776mm,the maximum deformation of steel plate angle steel welding is 0.403mm,both of which meet the safety deformation standards.However,after considering the difficulty and cost of construction,it is concluded that the plan of using steel plate angle steel welding is more in line with on-site construction.
作者
高搏
龙建平
吴恺
骆建军
GAO Bo;LONG Jian-ping;WU Kai;LUO Jian-jun(School of Civil Engineering,Henan Polytechnic University,Jiaozuo 454000,China;Southern Branch of Sinohydro Bureau 7 Co.,Ltd.,Shenzhen 518000,China;School of Civil Engineering and Architecture,Beijing Jiaotong University,Beijing 100044,China)
出处
《价值工程》
2023年第11期96-98,共3页
Value Engineering
关键词
临时便道
钢架结构
深基坑
数值模拟
设计与应用
temporary service road
steel frame structure
deep foundation pit
numerical simulation
design and application
