Connecting structure for top part of high pressure jet grouting pile anti-seepage wall
A technology of high-pressure rotary jetting pile and connecting structure, which is applied in sheet pile wall, foundation structure engineering, water conservancy engineering and other directions, can solve the problems of poor adaptability to deformation and poor sealing of the wall and the upper hydraulic structure, and achieve good adaptability , Ensure safety and reliability, and improve the effect of sealing reliability
Pending Publication Date: 2018-06-29
POWERCHINA ZHONGNAN ENG
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Problems solved by technology
[0003] In view of the above problems, the present invention aims to provide a connection structure for the top of the anti-seepage wall of the high-pressure rotary grouting pile, so as to solve the poor sealing of the top joint of the traditional high-pressure rotary grouting pile anti-seepage wall, and the problem of the wall and the upper hydraulic structure. The problem of poor deformation adaptability
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[0020] Such as Figure 1~3 As shown, a connection structure for the top of the high-pressure rotary grouting pile cut-off wall includes an upper hydraulic structure 8 above the high-pressure rotary grouting pile cut-off wall 1 .
[0021] A special-shaped beam 2 is arranged between the anti-seepage wall 1 of the high-pressure rotary grouting pile and the upper hydraulic structure 8 . The longitudinal section of the special-shaped beam 2 is convex, its horizontal part is a seat body 6 , and its vertical part is a fitting part 7 . The special-shaped beam 2 is a reinforced concrete structure. A reinforcement 3 is provided inside the special-shaped beam 2 at the junction area between the fitting portion 7 and the seat body 6 . The reinforcement adopts HPB300 with a diameter of 8-12mm.
[0022] The seat body 6 is as wide as the anti-seepage wall 1 of the high-pressure rotary grouting pile, and the width of the fitting part 7 is not less than 20 cm.
[0023] The upper hydraulic s...
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The invention discloses a connecting structure for the top part of a high pressure jet grouting pile anti-seepage wall. The connecting structure for the top part of the high pressure jet grouting pileanti-seepage wall comprises an upper hydraulic structure located above the high pressure jet grouting pile anti-seepage wall, wherein a special-shaped beam is arranged between the high pressure jet grouting pile anti-seepage wall and the upper hydraulic structure, and comprises a seat body and at least one embedment part arranged on the seat body; a groove allowing the embedment part to be inserted is formed in the upper hydraulic structure; the seat body is fixedly connected with the top part of the high pressure jet grouting pile anti-seepage wall; the embedment part is embedded into the groove of the upper hydraulic structure; and flexible material layers are arranged on the outer contour of the special-shaped beam, and all parts of the special-shaped beam requiring to contact the upper hydraulic structure. According to the connecting structure for the top part of the high pressure jet grouting pile anti-seepage wall provided by the invention, the sealing reliability between the high pressure jet grouting pile anti-seepage wall and the upper hydraulic structure is improved, and the connecting structure has a favorable adaptive capacity on vertical and horizontal difference deformation between the high pressure jet grouting pile anti-seepage wall and the upper hydraulic structure so as to ensure the safety and the reliability of an anti-seepage system, is convenient to construct, and has a wide application value in the field of water conservancy and hydropower engineering.
Description
technical field [0001] The invention belongs to water conservancy and hydropower engineering technology, in particular to a connection structure used for the top of a high-pressure rotary grouting pile anti-seepage wall. Background technique [0002] The anti-seepage wall of high-pressure rotary grouting piles is usually used for anti-seepage treatment in loose permeable foundations such as sand, gravel, and pebble (broken) stones or in filling bodies. When there is an upper hydraulic structure such as the bottom plate of the sluice chamber on the top of the anti-seepage wall of the high-pressure rotary grouting pile, in order to form a closed anti-seepage system, the top of the anti-seepage wall is often simply extended directly into the upper hydraulic structure such as the bottom plate to form a rigid connection; Or lay a layer of cement soil between the top of the anti-seepage wall and the upper hydraulic structure, so that a weak part is formed at the connection. Becau...
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IPC IPC(8): E02D19/18E02D5/46E02B3/16
CPCE02B3/16E02D5/46E02D19/18
Inventor 叶祥飞孟亚运
Owner POWERCHINA ZHONGNAN ENG