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A platform for research: civil engineering, architecture and urbanism
High-speed railway expansive soil embankment structure and construction method thereof
The invention discloses a high-speed railway expansive soil embankment structure and a construction method thereof. The embankment structure comprises a fill structure, a pile structure and a top plate structure, the fill structure is filled above a foundation, the pile structure penetrates through the fill structure, the top of the pile structure extends out of the fill structure, the top plate structure is located at the top of the fill structure and is fixedly connected with the top of the pile structure, and the bottom of the top plate structure is attached to the top of the fill structure. The pile structure and the top plate structure form a supporting foundation of the railway track structure, so the stress state of the top plate structure in surface contact is obviously better thanthe suspended stress state of a traditional foundation pile plate structure; the pile plate structure deforms through the friction effect of piles and soil, so the deformation time is short, and settlement deformation can be rapidly completed till stabilization; the pile-loading capacity applied by a railway track structure and a train load weight is smaller than the pile-preloading weight, so the embankment structure can meet the deformation control requirement of a high-speed railway, and meanwhile engineering investment can be reduced.
本发明公开了一种高速铁路膨胀土路堤结构及构筑方法，包括填方结构、桩结构和顶板结构，填方结构填筑在地基上方，桩结构贯穿填方结构，桩结构的顶部伸出填方结构，顶板结构位于填方结构的顶部，并与桩结构的顶部固定连接，顶板结构的底部与填方结构的顶部贴合。桩结构和顶板结构形成铁路轨道结构的支撑基础，处于面接触的顶板结构受力状态明显好于传统路基桩板结构的悬空受力状态，桩板结构通过桩与土的摩擦作用变形，变形时间快，能够快速完成沉降变形直至稳定，铁路轨道结构和列车荷载重量施加的堆载量小于堆载预压的重量，使路堤结构满足高速铁路的变形控制要求，同时能够减小工程投资。
High-speed railway expansive soil embankment structure and construction method thereof
The invention discloses a high-speed railway expansive soil embankment structure and a construction method thereof. The embankment structure comprises a fill structure, a pile structure and a top plate structure, the fill structure is filled above a foundation, the pile structure penetrates through the fill structure, the top of the pile structure extends out of the fill structure, the top plate structure is located at the top of the fill structure and is fixedly connected with the top of the pile structure, and the bottom of the top plate structure is attached to the top of the fill structure. The pile structure and the top plate structure form a supporting foundation of the railway track structure, so the stress state of the top plate structure in surface contact is obviously better thanthe suspended stress state of a traditional foundation pile plate structure; the pile plate structure deforms through the friction effect of piles and soil, so the deformation time is short, and settlement deformation can be rapidly completed till stabilization; the pile-loading capacity applied by a railway track structure and a train load weight is smaller than the pile-preloading weight, so the embankment structure can meet the deformation control requirement of a high-speed railway, and meanwhile engineering investment can be reduced.
本发明公开了一种高速铁路膨胀土路堤结构及构筑方法，包括填方结构、桩结构和顶板结构，填方结构填筑在地基上方，桩结构贯穿填方结构，桩结构的顶部伸出填方结构，顶板结构位于填方结构的顶部，并与桩结构的顶部固定连接，顶板结构的底部与填方结构的顶部贴合。桩结构和顶板结构形成铁路轨道结构的支撑基础，处于面接触的顶板结构受力状态明显好于传统路基桩板结构的悬空受力状态，桩板结构通过桩与土的摩擦作用变形，变形时间快，能够快速完成沉降变形直至稳定，铁路轨道结构和列车荷载重量施加的堆载量小于堆载预压的重量，使路堤结构满足高速铁路的变形控制要求，同时能够减小工程投资。
High-speed railway expansive soil embankment structure and construction method thereof
一种高速铁路膨胀土路堤结构及构筑方法
YAO YUCHUN (author) / XIAO CHAOQIAN (author) / ZHANG DONGQING (author) / FENG ZHIJUN (author) / ZHANG YAO (author)
2020-08-07
Patent
Electronic Resource
Chinese
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