新管幕法施工过程中钢筋连接术研究与应用
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摘要
通对钢筋连接技术在新管幕法施工过程中的研究得到了以下结论。(1)采用钢筋套筒连接,加快了施工进度。连接在现场施工一个接头仅需1～3 min,比一般焊接要快5～8倍,从而保证了工程进度。(2)采用的接头强度高,质量稳定可靠。现场抽检12组试件,经拉伸试验断裂全都在钢筋母材上,合格率达100%。(3)采用的这种设备重量较轻,搬运、转移速度快,且省时省力,操作简单,减少了工人施工作业时的劳动负担和压力。(4)安全可靠,无污染,工人作业环境大幅改善,降低了焊接施工引起的火灾发生的隐患。
The research has obtained the following conclusions.(1)The use of steel sleeve connection speeds up the construction progress. It takes only 1 to 3 minutes to connect a joint on site,which is 5 to 8 times faster than the general welding,thus ensuring the progress of the project.(2)The joint used is high in strength and stable in quality. On-site sampling of 12 sets of test pieces,all of which were broken on the steel bar by tensile test,the pass rate reached 100%.(3)The equipment used is light in weight,fast in handling and transfer,saves time and labor, and is easy to operate,reducing the labor burden and pressure on workers during construction work.(4)Safe and reliable,no pollution,the working environment of workers is greatly improved,which greatly reduces the hidden dangers caused by fire caused by welding construction.
The research has obtained the following conclusions.(1)The use of steel sleeve connection speeds up the construction progress. It takes only 1 to 3 minutes to connect a joint on site,which is 5 to 8 times faster than the general welding,thus ensuring the progress of the project.(2)The joint used is high in strength and stable in quality. On-site sampling of 12 sets of test pieces,all of which were broken on the steel bar by tensile test,the pass rate reached 100%.(3)The equipment used is light in weight,fast in handling and transfer,saves time and labor, and is easy to operate,reducing the labor burden and pressure on workers during construction work.(4)Safe and reliable,no pollution,the working environment of workers is greatly improved,which greatly reduces the hidden dangers caused by fire caused by welding construction.
引文
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[3]阎石,张占军,金春福,等.开挖过程中新管幕结构内力数值分析[J].沈阳建筑大学学报(自然科学版),2011,27(6):1064–1069.
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[2]杨仙,张可能,李钟,等.管幕预筑法中钢管顶进对地面沉降的影响[J].沈阳工业大学学报,2012,34(4):469–473.
[3]阎石,张占军,金春福,等.开挖过程中新管幕结构内力数值分析[J].沈阳建筑大学学报(自然科学版),2011,27(6):1064–1069.
[4]杨仙,张可能,李钟,等.地铁车站新预筑法施工中顶管间距的优化设计[J].中国铁道科学,2011,32(2):61–66.
[5]许庆伟.新管幕法竖井施工过程分析研究与实践[D].长沙:中南大学,2011.
[6]黎永索,张可能,黄常波,等.管幕预筑隧道地表沉降分析[J].岩土力学,2011,32(12):3701–3707.