A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method of water-rich sand layer ultra-wide special-shaped subway station
The invention discloses a construction method for an ultra-wide special-shaped subway station in a water-rich sand layer. The construction method comprises the following steps: constructing fender posts of the ultra-wide special-shaped subway station; the dewatering well of the ultra-wide special-shaped subway station is constructed; building a foundation pit excavation model of the pile-anchor support system of the ultra-wide special-shaped subway station; excavating a special-shaped foundation pit part; the construction takt of each construction process of the rectangular foundation pit part is calculated; dividing partial construction sections of the rectangular foundation pit, and calculating the construction period; the construction period of the rectangular foundation pit part is optimized through an equal-rhythm asynchronous pipeline method; constructing a first layer of earthwork at the rectangular foundation pit by adopting a center platform reserving and two-side slope closing excavation method; anchor spraying and pre-stressed anchor cable construction of the first layer of earthwork are conducted, and earthwork at the second section of the first layer is excavated synchronously; the construction method comprises the steps that firstly, a first section of earthwork of a second layer is excavated after purlin enclosing, tensioning, grouting and the like are conducted, next-section line production is conducted in sequence, according to the construction method, parameters such as safe excavation length and depth are obtained by building a foundation pit excavation model of the pile-anchor supporting system of the ultra-wide special-shaped subway station, and the construction safety of the foundation pit is guaranteed.
本发明公开一种富水砂层超宽异型地铁车站施工方法，包括：超宽异型地铁车站围护桩施工；超宽异型地铁车站降水井施工；建立超宽异型地铁车站桩锚支护体系基坑开挖模型；异型基坑部分开挖；计算矩形基坑部分各个施工过程的施工节拍；矩形基坑部分施工段划分，计算工期；利用等节奏异步流水法优化矩形基坑部分工期；采用中心留台，两边收坡开挖法施工矩形基坑处第一层土方；进行第一层土方的喷锚、预应力锚索施工，同步开挖第一层第2段处土方；经围檩、张拉、灌浆等强后，开挖第二层第1段土方，依次进行下段流水作业，所述方法通过建立超宽异型地铁车站桩锚支护体系基坑开挖模型，获得安全开挖长度、深度等参数，确保基坑施工安全。
Construction method of water-rich sand layer ultra-wide special-shaped subway station
The invention discloses a construction method for an ultra-wide special-shaped subway station in a water-rich sand layer. The construction method comprises the following steps: constructing fender posts of the ultra-wide special-shaped subway station; the dewatering well of the ultra-wide special-shaped subway station is constructed; building a foundation pit excavation model of the pile-anchor support system of the ultra-wide special-shaped subway station; excavating a special-shaped foundation pit part; the construction takt of each construction process of the rectangular foundation pit part is calculated; dividing partial construction sections of the rectangular foundation pit, and calculating the construction period; the construction period of the rectangular foundation pit part is optimized through an equal-rhythm asynchronous pipeline method; constructing a first layer of earthwork at the rectangular foundation pit by adopting a center platform reserving and two-side slope closing excavation method; anchor spraying and pre-stressed anchor cable construction of the first layer of earthwork are conducted, and earthwork at the second section of the first layer is excavated synchronously; the construction method comprises the steps that firstly, a first section of earthwork of a second layer is excavated after purlin enclosing, tensioning, grouting and the like are conducted, next-section line production is conducted in sequence, according to the construction method, parameters such as safe excavation length and depth are obtained by building a foundation pit excavation model of the pile-anchor supporting system of the ultra-wide special-shaped subway station, and the construction safety of the foundation pit is guaranteed.
本发明公开一种富水砂层超宽异型地铁车站施工方法，包括：超宽异型地铁车站围护桩施工；超宽异型地铁车站降水井施工；建立超宽异型地铁车站桩锚支护体系基坑开挖模型；异型基坑部分开挖；计算矩形基坑部分各个施工过程的施工节拍；矩形基坑部分施工段划分，计算工期；利用等节奏异步流水法优化矩形基坑部分工期；采用中心留台，两边收坡开挖法施工矩形基坑处第一层土方；进行第一层土方的喷锚、预应力锚索施工，同步开挖第一层第2段处土方；经围檩、张拉、灌浆等强后，开挖第二层第1段土方，依次进行下段流水作业，所述方法通过建立超宽异型地铁车站桩锚支护体系基坑开挖模型，获得安全开挖长度、深度等参数，确保基坑施工安全。
Construction method of water-rich sand layer ultra-wide special-shaped subway station
富水砂层超宽异型地铁车站施工方法
KONG CHUIGANG (author) / CAO YUXIN (author) / WEN SHAOPENG (author) / JIANG YONGTAO (author) / ZHANG WEN (author)
2023-06-30
Patent
Electronic Resource
Chinese
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