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A platform for research: civil engineering, architecture and urbanism
Pile-anchor supporting foundation pit deepening and reinforcing supporting structure and construction method thereof
The invention relates to a pile-anchor supporting foundation pit deepening and reinforcing supporting structure and a construction method thereof. The reinforcing supporting structure comprises original supporting piles (1), waist beams (3) and original pre-stressed anchor cables which are in an original pile-anchor supporting system, newly-added long supporting piles (2), newly-added pre-stressedanchor cables (4) and newly-arranged crown beams (5); the newly-added long supporting piles (2) are arranged between the original supporting piles (1) and penetrate through the whole foundation pit by a new excavation depth, and the tops of the newly-added long supporting piles (2) are flush with the tops of the original supporting piles (1) and are connected into a whole in a pouring mode through the newly-arranged crown beams (5); and the newly-added pre-stressed anchor cables (4) are distributed between the new piles and the old piles, and the outer ends of the newly-added pre-stressed anchor cables (4) are fixed to the waist beams (3). A reinforcing mode that the long supporting piles and the pre-stressed anchor cables are inserted between the original supporting piles is adopted, thewaist beams, the anchor cables and the newly-arranged crown beams are connected to form a unified whole with an original supporting structure, the overall rigidity and the cooperative deformation capacity of an enclosure structure can be effectively improved, and the bearing capacity of the enclosure structure is enhanced.
本发明涉及一种桩锚支护基坑增深加固支护结构及其施工方法，该加固支护结构包括原桩锚支护体系中的原支护桩（1）、腰梁（3）和原预应力锚索，以及新增长支护桩（2）、新增预应力锚索（4）和新设冠梁（5）；新增长支护桩（2）在原支护桩（1）桩间布设，新增长支护桩（2）贯穿整个基坑新的开挖深度，其顶部与原支护桩（1）的顶部平齐并通过新设冠梁（5）浇筑连接为一体；新增预应力锚索（4）在新旧两种桩的桩间分布且其外端固定在腰梁（3）上。本发明采用“原支护桩桩间插入长支护桩＋预应力锚索”的加固方式，通过腰梁、锚索、新设冠梁的连接，与原支护结构形成统一整体，能够有效增大围护结构的整体刚度和协同变形能力，加强围护结构承载力。
Pile-anchor supporting foundation pit deepening and reinforcing supporting structure and construction method thereof
The invention relates to a pile-anchor supporting foundation pit deepening and reinforcing supporting structure and a construction method thereof. The reinforcing supporting structure comprises original supporting piles (1), waist beams (3) and original pre-stressed anchor cables which are in an original pile-anchor supporting system, newly-added long supporting piles (2), newly-added pre-stressedanchor cables (4) and newly-arranged crown beams (5); the newly-added long supporting piles (2) are arranged between the original supporting piles (1) and penetrate through the whole foundation pit by a new excavation depth, and the tops of the newly-added long supporting piles (2) are flush with the tops of the original supporting piles (1) and are connected into a whole in a pouring mode through the newly-arranged crown beams (5); and the newly-added pre-stressed anchor cables (4) are distributed between the new piles and the old piles, and the outer ends of the newly-added pre-stressed anchor cables (4) are fixed to the waist beams (3). A reinforcing mode that the long supporting piles and the pre-stressed anchor cables are inserted between the original supporting piles is adopted, thewaist beams, the anchor cables and the newly-arranged crown beams are connected to form a unified whole with an original supporting structure, the overall rigidity and the cooperative deformation capacity of an enclosure structure can be effectively improved, and the bearing capacity of the enclosure structure is enhanced.
本发明涉及一种桩锚支护基坑增深加固支护结构及其施工方法，该加固支护结构包括原桩锚支护体系中的原支护桩（1）、腰梁（3）和原预应力锚索，以及新增长支护桩（2）、新增预应力锚索（4）和新设冠梁（5）；新增长支护桩（2）在原支护桩（1）桩间布设，新增长支护桩（2）贯穿整个基坑新的开挖深度，其顶部与原支护桩（1）的顶部平齐并通过新设冠梁（5）浇筑连接为一体；新增预应力锚索（4）在新旧两种桩的桩间分布且其外端固定在腰梁（3）上。本发明采用“原支护桩桩间插入长支护桩＋预应力锚索”的加固方式，通过腰梁、锚索、新设冠梁的连接，与原支护结构形成统一整体，能够有效增大围护结构的整体刚度和协同变形能力，加强围护结构承载力。
Pile-anchor supporting foundation pit deepening and reinforcing supporting structure and construction method thereof
一种桩锚支护基坑增深加固支护结构及其施工方法
GUO NAN (author) / XU XIWEI (author) / YANG XIAOHUI (author) / ZHU YANPENG (author) / HOU XINAN (author)
2020-12-15
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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