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A platform for research: civil engineering, architecture and urbanism
Construction method of double-wall steel cofferdam with high water level fall in reservoir area
The invention provides a reservoir area water level high-fall double-wall steel cofferdam construction method which comprises the following steps: establishing a plurality of pile foundation steel casings in a cofferdam area, mounting a steel cofferdam lowering platform at the tops of the pile foundation steel casings, and cleaning a riverbed within the range of the cofferdam to form a rectangular pit slot; a temporary parking bracket is spliced on the side wall of the pile foundation steel casing; a continuous jack is arranged on the cofferdam lowering platform; assembling a first section of steel cofferdam on the temporary parking bracket; the first section of steel cofferdam is lowered into water through a continuous jack, after the first section of steel cofferdam enters water, a subsequent steel cofferdam is connected to the first section of steel cofferdam, and water is injected into the sandwich wall, so that the first section of steel cofferdam sinks and is implanted into the foundation pit; wall clamping concrete is poured at the blade foot position in the first section of steel cofferdam; the first section of steel cofferdam is subjected to bottom sealing concrete pouring, and an inner support is installed in each layer of follow-up steel cofferdam; and when the water level reaches or possibly reaches the warning water level, the subsequent steel cofferdams continue to be connected.
本发明提出一种库区水位高落差双壁钢围堰施工方法，包括以下步骤：在围堰区域建立多个桩基钢护筒，在桩基钢护筒顶部安装钢围堰下放平台，对围堰范围内河床进行清理，形成矩形坑槽；在桩基钢护筒的侧壁上拼接临时停放牛腿；在围堰下放平台上设置连续千斤顶；在临时停放牛腿上拼装首节钢围堰；通过连续千斤顶下放首节钢围堰入水，首节钢围堰入水后，在首节钢围堰上连接后续钢围堰，向夹壁内注水，使首节钢围堰下沉并在基坑内着床；在首节钢围堰内的刃脚位置浇筑夹壁混凝土；对首节钢围堰进行封底混凝土浇筑，对每层后续钢围堰内安装内支撑；当水位达到或可能达到警戒水位时，继续连接后续钢围堰。
Construction method of double-wall steel cofferdam with high water level fall in reservoir area
The invention provides a reservoir area water level high-fall double-wall steel cofferdam construction method which comprises the following steps: establishing a plurality of pile foundation steel casings in a cofferdam area, mounting a steel cofferdam lowering platform at the tops of the pile foundation steel casings, and cleaning a riverbed within the range of the cofferdam to form a rectangular pit slot; a temporary parking bracket is spliced on the side wall of the pile foundation steel casing; a continuous jack is arranged on the cofferdam lowering platform; assembling a first section of steel cofferdam on the temporary parking bracket; the first section of steel cofferdam is lowered into water through a continuous jack, after the first section of steel cofferdam enters water, a subsequent steel cofferdam is connected to the first section of steel cofferdam, and water is injected into the sandwich wall, so that the first section of steel cofferdam sinks and is implanted into the foundation pit; wall clamping concrete is poured at the blade foot position in the first section of steel cofferdam; the first section of steel cofferdam is subjected to bottom sealing concrete pouring, and an inner support is installed in each layer of follow-up steel cofferdam; and when the water level reaches or possibly reaches the warning water level, the subsequent steel cofferdams continue to be connected.
本发明提出一种库区水位高落差双壁钢围堰施工方法，包括以下步骤：在围堰区域建立多个桩基钢护筒，在桩基钢护筒顶部安装钢围堰下放平台，对围堰范围内河床进行清理，形成矩形坑槽；在桩基钢护筒的侧壁上拼接临时停放牛腿；在围堰下放平台上设置连续千斤顶；在临时停放牛腿上拼装首节钢围堰；通过连续千斤顶下放首节钢围堰入水，首节钢围堰入水后，在首节钢围堰上连接后续钢围堰，向夹壁内注水，使首节钢围堰下沉并在基坑内着床；在首节钢围堰内的刃脚位置浇筑夹壁混凝土；对首节钢围堰进行封底混凝土浇筑，对每层后续钢围堰内安装内支撑；当水位达到或可能达到警戒水位时，继续连接后续钢围堰。
Construction method of double-wall steel cofferdam with high water level fall in reservoir area
一种库区水位高落差双壁钢围堰施工方法
XU CAIJIN (author) / GUO HENG (author) / TIAN LIUBAO (author) / HUANG ZHEN (author) / DENG TIANTIAN (author) / ZHANG BAO (author) / WANG KANGKANG (author)
2023-05-02
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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