道路下穿通道箱涵顶进施工技术应用
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摘要
箱涵顶进技术多用于穿越铁路、机场等建筑物,随着工程建设的需要,浅覆土、大断面的箱涵下穿既建道路的应用也越来越多。针对超宽断面箱涵在顶进施工过程中容易出现的"扎头"和"抬头"现象,结合某市快速路下穿通道工程实例,基于箱涵顶进施工的技术特点,采用对既建线路加固技术、高精度顶级技术以及降阻顶进技术,浅析了这三种技术的施工要点,促进箱涵顶进施工技术在道路下穿通道中的推广应用。
The box culvert jacking technology is widely used in crossing railway, airport and etc. While with the need of engineering construction, it also can be used under the situation where the burial soil is shallow and the box culvert has large section. Based on the characteristic of box culvert jacking technology, the reinforcement technique of built line, jacking technique with high precision and reducing resistance are applied in the practical engineering to avoid the phenomenon that the box culvert would plunge into ground easily during the jacking process. It analyzes the technical points of these three technologies, enhancing the popularization of box culvert jacking technology using in channel beneath the road.
The box culvert jacking technology is widely used in crossing railway, airport and etc. While with the need of engineering construction, it also can be used under the situation where the burial soil is shallow and the box culvert has large section. Based on the characteristic of box culvert jacking technology, the reinforcement technique of built line, jacking technique with high precision and reducing resistance are applied in the practical engineering to avoid the phenomenon that the box culvert would plunge into ground easily during the jacking process. It analyzes the technical points of these three technologies, enhancing the popularization of box culvert jacking technology using in channel beneath the road.
引文
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[6]袁建平.道路管棚支护下的箱涵顶进技术探究与应用[J].山西建筑,2016(22):148-149.
[7]张红伟.浅埋隧道下穿既有公路施工控制技术[J].工程建设与设计,2016(03):102-103.
[8]宋健.下穿高速公路大断面双线隧道的施工技术[J].城市道桥与防洪,2016(06):195-198.
[9]李风增.基于FLAC3D大跨度箱涵顶进滑板工法研究[J].北方交通,2016(01):9-14.
[2]权绪良.道口平改立箱涵顶进施工技术要点分析[J].上海铁道科技,2013(01):79-113.
[3]肖宇松,马行川.既有城市主干道铁路箱涵上再建跨线桥的桥型方案比选[J].世界桥梁,2016(04):21-25.
[4]林延杰,王少钦,马骎.通道箱涵顶进施工中扎头现象防止措施研究[J].公路交通科技(应用技术版),2008(08):122-123.
[5]易富,孙迪,赵琪琪,等.隧道下穿施工引起公路路面沉降分析[J].辽宁工程技术大学学报(自然科学版),2016,35(07):722-726.
[6]袁建平.道路管棚支护下的箱涵顶进技术探究与应用[J].山西建筑,2016(22):148-149.
[7]张红伟.浅埋隧道下穿既有公路施工控制技术[J].工程建设与设计,2016(03):102-103.
[8]宋健.下穿高速公路大断面双线隧道的施工技术[J].城市道桥与防洪,2016(06):195-198.
[9]李风增.基于FLAC3D大跨度箱涵顶进滑板工法研究[J].北方交通,2016(01):9-14.