Concrete diaphragm wall joint pipe capable of being provided with water stop steel plate

Abstract

A concrete diaphragm wall connector pipe capable of being provided with a water stop steel plate comprises a cylindrical connector pipe body, a connector is arranged at the head of the connector pipe body, a bottom plate is arranged at the bottom of the connector pipe body, inserting grooves are formed in the outer wall of the connector pipe body and the outer wall of the connector, and the water stop steel plate is inserted into the inserting grooves during construction. According to the scheme, on the basis that the advantages of joint pipe method construction are reserved, a conventional perforation hole joint treatment mode is omitted, the water stop steel plate is adopted for solving the leakage problem at the joints, the anti-seepage effect is more sufficiently guaranteed, and the construction progress can be accelerated.

Description

Technical Field

[0001] The utility model belongs to the field of water conservancy projects, and in particular relates to a concrete anti-seepage wall joint pipe structure which can be provided with a water-stop steel plate. Background Art

[0002] Concrete anti-seepage wall is an underground continuous wall with anti-seepage function, which is built by using drilling or trenching machinery to solidify the wall with mud in loose permeable foundation or dam (weir) body, digging slot holes or interlocking pile holes, pouring concrete in the slot (hole) or backfilling other anti-seepage materials. Concrete anti-seepage wall is a common anti-seepage treatment measure in water conservancy and hydropower projects, and is widely used in vertical anti-seepage of hydraulic structures such as embankments and dams. The construction process of concrete anti-seepage wall determines that the joints between adjacent wall sections or between piles are the weak links of anti-seepage wall. Engineering practice has proved that poor joint quality often becomes a hidden danger of anti-seepage. Common ways of connecting wall sections include joint pipe method, drilling method, double reverse arc pile column method and cutting method. Among them, the joint pipe method has the advantages of fast construction speed and material saving, and is widely used in the connection of wall sections of concrete anti-seepage wall. When the joint pipe method is used for casting, before casting the first-order slot hole, the cylindrical joint pipe is first lowered. After the first-order slot hole is cast, the joint pipe is pulled out, and then the second-order joint pipe is cast. The joints between the first and second-order anti-seepage walls are arc-shaped. In order to ensure the anti-seepage effect at the joints, the seam-riding hole method is often used in engineering. After making holes across the seams at the joints (the hole diameter is smaller than the thickness of the anti-seepage wall), micro-expansive concrete is used to fill and compact. In actual construction, the seam-riding hole making often deviates, which cannot solve the anti-seepage loophole problem at the joints. At the same time, the seam-riding hole construction process is difficult, which affects the progress of the project.

[0003] Therefore, it is particularly important to design a joint pipe structure that can solve the anti-seepage loopholes at the joint pipe method joint. Summary of the invention

[0004] The utility model aims to provide a concrete anti-seepage wall joint pipe which can be provided with a water-stop steel plate in view of the deficiencies in the prior art.

[0005] To this end, the above-mentioned purpose of the utility model is achieved through the following technical solutions:

[0006] A concrete anti-seepage wall joint pipe capable of being provided with a water-stop steel plate comprises a cylindrical joint pipe body, a joint is provided at the head of the joint pipe body, a bottom plate is provided at the bottom of the joint pipe body, slots are provided on the outer walls of the joint pipe body and the joint, and the water-stop steel plate is inserted into the slots during construction.

[0007] Furthermore, the cross section of the slot is concave, and the depth H of the slot is greater than or equal to 20 cm.

[0008] Furthermore, a cross brace is arranged on the inner wall of the joint pipe body and the joint, and a hanging hole is arranged on the cross brace.

[0009] Furthermore, the joint pipe body and the joint are integrally cast from steel.

[0010] The beneficial effects of this program are:

[0011] On the basis of retaining the advantages of the joint pipe construction method, the conventional seam hole treatment method is cancelled, and water-stop steel plates are used to solve the leakage problem at the joints. The anti-seepage effect is more fully guaranteed and it is conducive to speeding up the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of a concrete anti-seepage wall joint pipe that can be provided with a water-stop steel plate according to the utility model;

[0013] Figure 2 yes Figure 1 A local enlarged schematic diagram of point A;

[0014] Figure 3 It is a cross-sectional schematic diagram of a water-stopping steel plate inserted into a joint pipe slot of the utility model;

[0015] Figure 4 It is a cross-sectional schematic diagram of the joint pipe of the utility model;

[0016] Figure 5 It is a schematic diagram of the application of the joint pipe of the utility model. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Example

[0018] like Figure 1 — Figure 5 As shown, a concrete anti-seepage wall joint pipe that can be provided with a water-stop steel plate comprises a cylindrical joint pipe body 1, a joint 2 is provided at the head of the joint pipe body 1, a bottom plate 3 is provided at the bottom of the joint pipe body 1, and slots 4 are provided on the outer walls of the joint pipe body 1 and the joint 2. During construction, the following sequence is followed: ① first excavate a first-order groove section 02 on the concrete anti-seepage wall 01, and use mud to protect the wall; ② place a joint pipe 03 in the concrete anti-seepage wall 01, with the slot 4 of the joint pipe facing the first-order groove section; ③ insert a water-stop steel plate 5 into the slot 4; ④ cast a first-order anti-seepage wall 04 in the first-order groove section 02; ⑤ pull out the joint pipe, and leave the water-stop steel plate 5 in the first-order anti-seepage wall 04; ⑥ cast a second-order anti-seepage wall 05 in sequence according to the above steps.

[0019] This scheme retains the advantages of the joint pipe method of construction, cancels the conventional seam hole treatment method, and adopts water-stop steel plates to solve the leakage problem at the joints. The anti-seepage effect is more fully guaranteed and it is conducive to speeding up the construction progress.

[0020] Furthermore, the cross-section of the slot 4 is a concave shape, and the depth H of the slot 4 is greater than or equal to 20 cm. In actual construction, the specific structure (shape) and size of the slot can be designed and adjusted according to actual needs.

[0021] Furthermore, a cross brace 6 is arranged on the inner wall of the joint pipe body 1 and the joint 2, and a lifting hole 7 is arranged on the cross brace. The cross brace can play a supporting role to enhance the strength of the joint pipe body and the joint. The lifting hole is convenient for lifting the entire joint pipe during construction, which is conducive to pulling out the joint pipe.

[0022] Furthermore, the joint pipe body 1 and the joint 2 are integrally cast from steel or stainless steel, etc., and the integral casting has good strength and is easy to process.

[0023] The above-mentioned specific implementation methods are used to explain the present invention and are only preferred embodiments of the present invention, rather than limiting the present invention. Any modifications, equivalent substitutions, improvements, etc. made to the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.

Claims

1. A concrete anti-seepage wall joint pipe capable of being provided with a water-stop steel plate, characterized in that: The invention comprises a cylindrical joint pipe body (1), a joint (2) is arranged at the head of the joint pipe body (1), a bottom plate (3) is arranged at the bottom of the joint pipe body (1), and a slot (4) is arranged on the outer walls of the joint pipe body (1) and the joint (2). During construction, a water stop steel plate (5) is inserted into the slot (4).

2. A concrete anti-seepage wall joint pipe capable of being provided with a water-stop steel plate according to claim 1, characterized in that The cross section of the slot (4) is concave, and the depth H of the slot (4) is greater than or equal to 20 cm.

3. A concrete anti-seepage wall joint pipe capable of being provided with a water-stop steel plate according to claim 1, characterized in that A cross brace (6) is arranged on the inner walls of the joint pipe body (1) and the joint (2), and a hanging hole (7) is arranged on the cross brace.

4. A concrete anti-seepage wall joint pipe capable of being provided with a water-stop steel plate according to claim 1, characterized in that The joint pipe body (1) and the joint (2) are integrally cast from steel.

Images