Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
L-shaped prestressed tension-anchor secant double-row pile foundation pit supporting structure and construction method thereof
The invention discloses an L-shaped prestressed tension-anchor secant double-row pile foundation pit supporting structure and a construction method thereof. The structure comprises a front row of piles, a rear row of piles, a front row pile top ring beam, a rear row pile top ring beam and coupling beams. The structure is characterized in that the structure further comprises a plurality of L-shapedprestressed ribs; the front row of piles are secant cast-in-situ bored piles, and the secant cast-in-situ bored piles include front row prestressed reinforced concrete cast-in-situ piles and plain concrete cast-in-situ piles which are arranged in a spaced secant mode; the rear row of piles are discrete cast-in-situ bored piles which include the rear row prestressed reinforced concrete cast-in-situ piles which are arranged in a discrete mode; and one end of each L-shaped prestressed rib penetrates through the interior of the corresponding front row prestressed reinforced concrete cast-in-situpile from bottom to top and then transversely penetrates through the corresponding coupling beam and the rear row pile top ring beam before being fixed. According to the L-shaped prestressed tension-anchor secant double-row pile founcation pit supporting structure and the construction method thereof, the prestressed ribs are arranged in the cast-in-situ piles with prestress applied, pile bodies are protected against cracks under tension, the durability of the pile bodies is improved, moreover, the construction process is simple, cross operation with earth excavation is avoided, and the construction period is shortened.
本发明公开了一种L型预应力拉锚咬合式双排桩基坑支护结构及其施工方法，包括前排桩、后排桩、前排桩顶圈梁、后排桩顶圈梁、连梁，其特征在于，还包括多个L型预应力筋；前排桩为咬合式钻孔灌注桩，咬合式钻孔灌注桩包括间隔咬合设置的前排预应力钢筋混凝土灌注桩和素混凝土灌注桩；后排桩为离散式钻孔灌注桩，离散式钻孔灌注桩包括离散设置的后排预应力钢筋混凝土灌注桩；每个L型预应力筋的一端自下向上穿过相应的前排预应力钢筋混凝土灌注桩内部以及横穿过连梁后和后排桩顶圈梁固定。本发明在灌注桩中放置预应力筋并施加预应力，避免桩身受拉出现裂缝，提高了桩身的耐久性，且施工工艺简单，不与土方开挖交叉作业，节约了工期。
L-shaped prestressed tension-anchor secant double-row pile foundation pit supporting structure and construction method thereof
The invention discloses an L-shaped prestressed tension-anchor secant double-row pile foundation pit supporting structure and a construction method thereof. The structure comprises a front row of piles, a rear row of piles, a front row pile top ring beam, a rear row pile top ring beam and coupling beams. The structure is characterized in that the structure further comprises a plurality of L-shapedprestressed ribs; the front row of piles are secant cast-in-situ bored piles, and the secant cast-in-situ bored piles include front row prestressed reinforced concrete cast-in-situ piles and plain concrete cast-in-situ piles which are arranged in a spaced secant mode; the rear row of piles are discrete cast-in-situ bored piles which include the rear row prestressed reinforced concrete cast-in-situ piles which are arranged in a discrete mode; and one end of each L-shaped prestressed rib penetrates through the interior of the corresponding front row prestressed reinforced concrete cast-in-situpile from bottom to top and then transversely penetrates through the corresponding coupling beam and the rear row pile top ring beam before being fixed. According to the L-shaped prestressed tension-anchor secant double-row pile founcation pit supporting structure and the construction method thereof, the prestressed ribs are arranged in the cast-in-situ piles with prestress applied, pile bodies are protected against cracks under tension, the durability of the pile bodies is improved, moreover, the construction process is simple, cross operation with earth excavation is avoided, and the construction period is shortened.
本发明公开了一种L型预应力拉锚咬合式双排桩基坑支护结构及其施工方法，包括前排桩、后排桩、前排桩顶圈梁、后排桩顶圈梁、连梁，其特征在于，还包括多个L型预应力筋；前排桩为咬合式钻孔灌注桩，咬合式钻孔灌注桩包括间隔咬合设置的前排预应力钢筋混凝土灌注桩和素混凝土灌注桩；后排桩为离散式钻孔灌注桩，离散式钻孔灌注桩包括离散设置的后排预应力钢筋混凝土灌注桩；每个L型预应力筋的一端自下向上穿过相应的前排预应力钢筋混凝土灌注桩内部以及横穿过连梁后和后排桩顶圈梁固定。本发明在灌注桩中放置预应力筋并施加预应力，避免桩身受拉出现裂缝，提高了桩身的耐久性，且施工工艺简单，不与土方开挖交叉作业，节约了工期。
L-shaped prestressed tension-anchor secant double-row pile foundation pit supporting structure and construction method thereof
L型预应力拉锚咬合式双排桩基坑支护结构及其施工方法
YAN CHAO (Autor:in) / LIANG RONGZHU (Autor:in) / XU GUANGXIAO (Autor:in) / DONG QING (Autor:in)
26.05.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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