Underground diaphragm wall joint position leakage pre-embedded detection structure

Abstract

The utility model relates to the technical field of underground diaphragm walls, and discloses an underground diaphragm wall joint position leakage pre-buried detection structure which comprises a sleeve valve pipe pre-buried in an underground diaphragm wall, the underground diaphragm wall comprises a plurality of wall sections which are in butt joint in sequence, a joint position is formed between every two adjacent wall sections, and the sleeve valve pipe is pre-buried in the joint position; the sleeve valve pipe is provided with a grouting head connected with a grouting pump and a water pressure sensor, and the grouting head is exposed at the top of the wall section. The sleeve valve pipe is pre-buried at the joint position of the underground diaphragm wall, and the grouting head and the water pressure sensor are arranged, so that the detection range can be obviously expanded, and the sleeve valve pipe can be subsequently used for carrying out water pressure test to judge whether leakage exists at the joint position or not, thereby improving the detection precision, realizing organic combination of construction and detection, and improving the detection efficiency. And a more reliable technical guarantee is provided for construction and use of the underground diaphragm wall.

Description

Technical Field

[0001] This utility model patent relates to the technical field of diaphragm walls, and more specifically, to a pre-embedded detection structure for leakage at the joints of diaphragm walls. Background Technology

[0002] As an important support structure for deep foundation pits, diaphragm walls have multiple functions such as load-bearing, soil retention, water interception, and seepage prevention. Their quality is directly related to the safety and stability of the foundation pit.

[0003] However, during the construction and use of diaphragm walls, the problem of leakage detection at the joints has always been one of the challenges faced by the engineering community.

[0004] In existing technologies, traditional detection methods such as core drilling, acoustic transmission, and ultrasonic testing require drilling holes in the wall or pre-embedding measuring tubes. The detection range is often limited to a local area and cannot comprehensively detect the entire joint, which can easily lead to the omission of potential leakage hazards.

[0005] In addition, methods such as resistivity method and manual detection method are greatly affected by geological conditions and human factors, resulting in low detection accuracy and difficulty in accurately determining the specific location and extent of leakage. Utility Model Content

[0006] The purpose of this utility model is to provide a pre-embedded detection structure for leakage at the joint of underground continuous wall, which aims to solve the problem of limited detection range at the joint in the existing technology.

[0007] This utility model is implemented as follows: a pre-embedded detection structure for leakage at the joint of a diaphragm wall, characterized in that it includes a sleeve valve pipe pre-embedded in the diaphragm wall, wherein the diaphragm wall comprises multiple wall segments connected in sequence, and a joint is formed between adjacent wall segments, and the sleeve valve pipe is pre-embedded in the joint; the sleeve valve pipe has a grouting head connected to a grouting pump and a water pressure sensor, and the grouting head is exposed at the top of the wall segment.

[0008] Furthermore, the wall segment is provided with a reinforcing cage, the reinforcing cage having an end segment extending to the joint position, and the sleeve valve pipe is inserted in the end segment.

[0009] Furthermore, the sleeve valve tube is fixedly connected to the end section.

[0010] Furthermore, the end section has a bend, and the sleeve valve tube is inserted into the bend and fixedly connected to the bend.

[0011] Furthermore, the two ends of the end segment are respectively formed with the bending positions, and a sleeve valve tube is inserted into each of the two bending positions.

[0012] Furthermore, the reinforcing cage includes a plurality of longitudinally arranged longitudinal bars and transversely arranged transverse bars, the plurality of longitudinal bars being arranged at intervals around each other and connected to the transverse bars respectively; the ends of the transverse bars are placed in the joint position to form the end segments.

[0013] Furthermore, the ends of the transverse ribs extend in a bent manner, forming the bent position.

[0014] Furthermore, an I-beam is provided at the joint position, the I-beam has a central plate in the middle, and end plates are provided at both ends of the central plate. The end plates and the central plate enclose a side area, and the side areas are provided on both sides of the I-beam. The I-beam is placed in the joint position, and the two sides of the end plates extend to the adjacent wall segments respectively.

[0015] Furthermore, the end segment is embedded in the side region, and the sleeve valve tube is located in the side region.

[0016] Furthermore, the sleeve valve tube includes a valve tube having an outer grouting section, and a one-way valve for outward unidirectional grouting is provided on the outer grouting section; a grouting core tube is provided in the valve tube, and the grouting core tube has an inner grouting section, which is arranged aligned with the outer grouting section;

[0017] The inner grouting section is provided with a grouting port, and a grouting space is formed between the inner grouting section and the outer grouting section. The grouting core tube is provided with multiple sealing rings, which are located at the ends of the grouting space to seal the ends of the grouting space.

[0018] During the grouting process, the grout in the grouting core tube enters the grouting space through the grouting port, and the grout in the grouting space is sprayed outward through the one-way valve.

[0019] Compared with the prior art, the pre-embedded detection structure for leakage at the joint of underground continuous wall provided by this utility model has the following technical advantages:

[0020] 1) By pre-embedding the sleeve valve pipe in the joint position, liquid is injected into the sleeve valve pipe using a grouting pump, and the water pressure change is monitored in real time by a water pressure sensor. This can achieve full coverage of the entire joint area, thus breaking through the limitation of traditional detection methods that can only detect local areas. It can effectively expand the detection range and avoid the problem of missed detection caused by local detection.

[0021] 2) Water pressure sensors can monitor water pressure changes in real time and accurately, thereby accurately determining whether there is leakage at the joint and ensuring the reliability and accuracy of the detection results;

[0022] 3) Through the real-time monitoring function of the water pressure sensor, the leakage at the joint of the diaphragm wall can be monitored in real time and given a dynamic early warning. Once an abnormal change in water pressure is detected, measures can be taken in time to deal with it, so as to prevent the leakage problem from worsening and thus effectively ensure the structural safety and performance of the diaphragm wall. Attached Figure Description

[0023] Figure 1 This is a top sectional view of the steel cage and sleeve valve pipe provided by this utility model;

[0024] Figure 2 This is a front view schematic diagram of the I-beam provided by this utility model;

[0025] Figure 3 This is a cross-sectional schematic diagram of the sleeve valve tube structure provided by this utility model;

[0026] In the diagram: 100 for joint location, 101 for rebar cage, 102 for end section, 103 for bend, 104 for transverse reinforcement, 105 for longitudinal reinforcement, 106 for I-beam, 107 for side area, 108 for middle plate, and 109 for end plate.

[0027] Sleeve valve pipe 200, valve pipe 201, external grouting section 202, one-way valve 203, grouting core pipe 204, internal grouting section 205, grouting port 206, grouting space 207, sealing ring 208. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0030] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0031] Reference Figure 1-3 The image shown is a preferred embodiment of the present invention.

[0032] The pre-embedded detection structure for leakage at the joint of the diaphragm wall includes a sleeve valve pipe pre-embedded in the diaphragm wall. The diaphragm wall consists of multiple wall segments connected in sequence, with joint positions 100 formed between adjacent wall segments. The sleeve valve pipe is pre-embedded in the joint positions 100. The sleeve valve pipe has a grouting head 201 connected to a grouting pump and a water pressure sensor. The grouting head 201 is exposed at the top of the wall segment.

[0033] The aforementioned pre-embedded detection structure for leakage at the joints of diaphragm walls has the following technical advantages:

[0034] 1) By pre-embedding the sleeve valve pipe in the joint position 100, liquid is injected into the sleeve valve pipe using a grouting pump, and the water pressure change is monitored in real time by a water pressure sensor. This can achieve full coverage of the entire joint area, thus breaking through the limitation of traditional detection methods that can only detect local areas. It can effectively expand the detection range and avoid the problem of missed detection caused by local detection.

[0035] 2) The water pressure sensor can monitor water pressure changes in real time and accurately, thereby accurately determining whether there is leakage at the joint position 100, ensuring the reliability and accuracy of the detection results;

[0036] 3) Through the real-time monitoring function of the water pressure sensor, the leakage at the joint of the diaphragm wall can be monitored and dynamically warned in real time. Once an abnormal change in water pressure is detected, measures can be taken in time to deal with it, so as to prevent the leakage problem from worsening and thus effectively ensure the structural safety and performance of the diaphragm wall.

[0037] In this embodiment, a steel cage 101 is provided in the wall section. The steel cage 101 has an end section 102 extending to the joint position 100, and the sleeve valve pipe is inserted in the end section 102.

[0038] By inserting the sleeve valve pipe into the end section 102 of the reinforcing cage 101, the sleeve valve pipe can be stably embedded in the joint position 100, providing a reliable structural foundation for subsequent leakage detection, ensuring the organic integration of the detection device with the wall structure, and improving the stability and reliability of the detection.

[0039] In this embodiment, the sleeve valve pipe is fixedly connected to the end section 102. During the lowering of the reinforcing cage 101 and the concrete pouring process, the sleeve valve pipe is first fixed to the end section 102 to ensure the stability of the sleeve valve pipe position and prevent it from shifting during construction. Then, concrete is poured to form the wall section, thereby providing a guarantee for accurate judgment of leakage in the future.

[0040] In this embodiment, the end section 102 has a bend 103, the sleeve valve tube is inserted into the bend 103 and is fixedly connected to the bend 103.

[0041] The bend 103 at the end section 102 provides a specific fixed position for the sleeve valve tube, allowing it to better adapt to the structural characteristics of the joint position 100. By inserting the sleeve valve tube into the bend 103 and fixing it in place, the stability of the sleeve valve tube at the joint position 100 is further enhanced. This also facilitates construction operations, improves construction efficiency, and provides more stable structural support for subsequent leakage detection.

[0042] In this embodiment, the two ends of the end section 102 are respectively formed with bending positions 103, and sleeve valve tubes are respectively inserted in the two bending positions 103.

[0043] By setting bends 103 at both ends of the end section 102 and inserting sleeve valves, multi-point detection of the joint position 100 can be achieved, expanding the detection range and improving the comprehensiveness of the detection. This design can effectively solve the problem of limited detection range of leakage at the joint position 100 in the prior art, so that the entire joint area can be fully detected, avoiding missed detections, and thus more accurately determining whether there is leakage at the joint position 100.

[0044] In this embodiment, the steel cage 101 includes a plurality of longitudinally arranged longitudinal bars 105 and transversely arranged transverse bars 104. The plurality of longitudinal bars 105 are arranged in a ring around each other at intervals and are respectively connected to the transverse bars 104. The ends of the transverse bars 104 are placed in the joint position 100 to form end sections 102.

[0045] This provides a good carrier for the pre-embedding of the sleeve valve pipe, which can make full use of the structural stability of the steel cage 101, ensure the positional accuracy and stability of the sleeve valve pipe during construction, and provide a reliable structural foundation for subsequent leakage detection.

[0046] In this embodiment, the end of the transverse rib 104 is bent and extended to form a bend position 103. Such a bend structure not only facilitates the installation and fixing of the sleeve valve tube, but also enhances the stability of the sleeve valve tube at the joint position 100, improves the reliability of the detection, and is also beneficial to the construction operation, thus improving the construction efficiency.

[0047] In this embodiment, an I-beam 106 is provided at the joint position 100. The middle part of the I-beam 106 has a middle plate 108, and the two ends of the middle plate 108 are respectively provided with end plates 109. The end plates 109 and the middle plate 108 enclose a side area 107. The two sides of the I-beam 106 are respectively provided with side areas 107. The I-beam 106 is placed in the joint position 100, and the two sides of the end plates 109 extend to the adjacent wall segments respectively.

[0048] The side area 107 formed by the middle plate 108 and end plate 109 of the I-beam 106 provides space for the pre-embedding of the sleeve valve pipe, allowing the sleeve valve pipe to be better integrated into the structure of the joint position 100. This not only improves the overall stability of the joint position 100, but also facilitates the installation and inspection of the sleeve valve pipe, ensuring the organic integration of the inspection device with the wall structure and improving the reliability of the inspection.

[0049] In this embodiment, the end section 102 is embedded in the side region 107, and the sleeve valve tube is placed in the side region 107. This allows the sleeve valve tube to be stably embedded in the joint position 100 and tightly integrated with the structure of the I-beam 106. This not only improves the stability of the sleeve valve tube at the joint position 100, but also makes full use of the structural advantages of the I-beam 106 to enhance the overall structural strength of the joint position 100, providing a more reliable structural guarantee for subsequent leakage detection, and also improving the accuracy of detection.

[0050] In this embodiment, the sleeve valve pipe 200 includes a valve pipe 201, the valve pipe 201 has an outer grouting section 202, and a one-way valve 203 for outward unidirectional grouting is provided on the outer grouting section 202; a grouting core pipe 204 is provided in the valve pipe 201, and the grouting core pipe 204 has an inner grouting section 205, which is aligned with the outer grouting section 202.

[0051] The inner grouting section 205 is provided with a grouting port 206. A grouting space 207 is formed between the inner grouting section 205 and the outer grouting section 202. A plurality of sealing rings 208 are provided on the grouting core tube 204. The plurality of sealing rings 208 are located at the ends of the grouting space 207 respectively, sealing the ends of the grouting space 207.

[0052] During the grouting process, the grout in the grouting core tube 204 enters the grouting space 207 through the grouting port 206, and the grout in the grouting space 207 is sprayed outward through the one-way valve 203.

[0053] The one-way grouting method using the sleeve valve tube 200 effectively prevents grout backflow and ensures smooth grouting. At the same time, the multiple sealing rings 208 can seal the end of the grouting space 207 to prevent grout leakage, thus improving the efficiency and quality of grouting. This precise grouting method can better meet the grouting requirements of the joint position 100 and provide a more reliable guarantee for subsequent leakage detection.

[0054] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pre-embedded detection structure for leakage at the joints of a diaphragm wall, characterized in that, The system includes a sleeve valve pipe embedded in a diaphragm wall, which comprises multiple sequentially joined wall segments, with joints formed between adjacent wall segments, and the sleeve valve pipe embedded in the joints. The sleeve valve pipe has a grouting head connected to a grouting pump and a water pressure sensor, and the grouting head is exposed at the top of the wall segment.

2. The pre-embedded detection structure for leakage at the joint of a diaphragm wall as described in claim 1, characterized in that, The wall section is provided with a reinforcing cage, the reinforcing cage having an end section extending to the joint position, and the sleeve valve pipe is inserted in the end section.

3. The pre-embedded detection structure for leakage at the joint of a diaphragm wall as described in claim 2, characterized in that, The sleeve valve tube is fixedly connected to the end section.

4. The pre-embedded detection structure for leakage at the joint of a diaphragm wall as described in claim 2, characterized in that, The end section has a bend, and the sleeve valve tube is inserted into the bend and fixedly connected to the bend.

5. The pre-embedded detection structure for leakage at the joint of a diaphragm wall as described in claim 4, characterized in that, The two ends of the end section are respectively formed with the bending positions, and the sleeve valve tube is inserted into each of the two bending positions.

6. The pre-embedded detection structure for leakage at the joint of a diaphragm wall as described in claim 4, characterized in that, The steel cage includes a plurality of longitudinally arranged longitudinal bars and transversely arranged transverse bars. The plurality of longitudinal bars are arranged at intervals around each other and are respectively connected to the transverse bars. The ends of the transverse bars are placed in the joint position to form the end segments.

7. The pre-embedded detection structure for leakage at the joint of a diaphragm wall as described in claim 6, characterized in that, The ends of the transverse ribs are bent and extended to form the bend.

8. The pre-embedded detection structure for leakage at the joint of a diaphragm wall as described in claim 1 or 2, characterized in that, An I-beam is provided at the joint location. The I-beam has a central plate in the middle and end plates at both ends of the central plate. The end plates and the central plate enclose a side area. The I-beam has the side area on both sides. The I-beam is placed at the joint location, and the two sides of the end plates extend into the adjacent wall segments respectively.

9. The pre-embedded detection structure for leakage at the joint of a diaphragm wall as described in claim 8, characterized in that, The end section is embedded in the side region, and the sleeve valve tube is located in the side region.

10. The pre-embedded detection structure for leakage at the joint of a diaphragm wall as described in any one of claims 1-5, characterized in that, The sleeve valve tube includes a valve tube with an outer grouting section and a one-way valve for outward grouting on the outer grouting section; the valve tube contains a grouting core tube with an inner grouting section, and the inner grouting section is arranged aligned with the outer grouting section. The inner grouting section is provided with a grouting port, and a grouting space is formed between the inner grouting section and the outer grouting section. The grouting core tube is provided with multiple sealing rings, which are located at the ends of the grouting space to seal the ends of the grouting space. During the grouting process, the grout in the grouting core tube enters the grouting space through the grouting port, and the grout in the grouting space is sprayed outward through the one-way valve.

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