CN210636422U - Underground continuous wall joint structure - Google Patents
Underground continuous wall joint structure Download PDFInfo
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- CN210636422U CN210636422U CN201920326163.7U CN201920326163U CN210636422U CN 210636422 U CN210636422 U CN 210636422U CN 201920326163 U CN201920326163 U CN 201920326163U CN 210636422 U CN210636422 U CN 210636422U
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Abstract
The utility model discloses an underground continuous wall joint structure, which is characterized by comprising a self-sealing joint tool and a joint temporary plugging tool matched with the surface shape of the self-sealing joint tool, wherein the self-sealing joint tool comprises a semi-circular arc joint sealing plate, two linear connecting pieces which are symmetrically arranged on the semi-circular arc joint sealing plate and run through the two sides of the inner arc surface and the outer arc surface of the semi-circular arc joint sealing plate, a first-class fan-shaped water swelling water stopping strip, a second-class water swelling water stopping strip and a third-class water swelling water stopping strip which are sequentially stuck on the inner arc surface of the semi-circular arc joint sealing plate, a fourth-class water swelling water stopping strip stuck in the middle of the outer arc surface of the semi-circular arc joint sealing plate and linear joint sealing plates; the leakage-stopping joint has the advantages that the leakage-stopping function can be automatically performed after the joint leaks, meanwhile, the integrity of the joint can be improved, the development of water-permeable cracks is reduced, and the construction cost is low.
Description
Technical Field
The utility model belongs to the technical field of the construction and specifically relates to an underground continuous wall joint structure is related to.
Background
The underground continuous wall can effectively control the environmental deformation caused by foundation pit excavation due to high rigidity, so that the underground continuous wall is widely applied to deep foundation pits of urban rail transit, river crossing channels, high-rise buildings and the like, and is particularly commonly applied to the condition that sensitive building structures exist at the periphery. At present, the underground diaphragm wall mainly adopts a framing construction mode, a construction joint exists between one wall body, namely an underground diaphragm wall joint, in field application, the underground diaphragm wall joint often becomes a leakage risk point of the underground diaphragm wall, the water leakage of the underground diaphragm wall can cause the water leakage of an underground structure, so that the structural durability is influenced, and China has a large amount of cost for leakage plugging of urban rail transit underground structures and underground cavern structures every year.
In order to solve the problems, a large number of experts and scholars explore and optimize underground diaphragm wall joints, and research finds that the current main modes include three types, the first type is to increase a water seepage path by increasing a joint structure to reduce the risk of water seepage, for example, in the patent 'GXJ underground diaphragm wall rubber water-stop joint tool and construction method thereof' and 'underground diaphragm wall omega-shaped milling joint', the water seepage path still exists in the mode; the second type is that underground water is blocked by grouting outside the joint, and the method has good effect but high cost; the third type is a rigid joint, such as I-steel, which increases the rigidity of the joint and reduces the possibility of leakage of the construction joint, but the cost is high. Meanwhile, once the leakage structure cannot actively leak the leakage, the side wall and the corresponding decoration body are usually chiseled to leak the leakage after the structure is completed, and the cost is high.
Disclosure of Invention
The utility model aims to solve the technical problem that a can leak stoppage function by oneself after connecting the seepage is provided, multiplicable joint wholeness simultaneously reduces the development of permeable crack, and the underground continuous wall joint structure that the operating expenses is low.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a kind of underground continuous wall joint structure, including self-sealing joint tool and temporary plugging tool of joint, the said self-sealing joint tool includes semi-circular arc joint sealing plate, two I-shaped connecting pieces, one kind of fan-shaped water swelling sealing strip, two kinds of water swelling sealing strips, three kinds of water swelling sealing strips, four kinds of water swelling sealing strips and two I-shaped joint sealing plates, the said I-shaped connecting pieces are symmetrically installed on the said semi-circular arc joint sealing plate and run through the two sides of its inner and outer arc surfaces, the said two kinds of water swelling sealing strips are pasted in the middle of the inner arc surface of the said semi-circular arc joint sealing plate, the said one kind of fan-shaped water swelling sealing strips and the said three kinds of water swelling sealing strips are pasted in the inner arc surface of the said semi-circular arc joint sealing plate and the said one kind of fan-shaped water swelling sealing strips and the said three kinds of water swelling sealing strips are located in the two sides of the said two, the four-class water swelling water stop bars are adhered to the middle of the outer arc surface of the semi-circular arc-shaped joint sealing plate, and the linear joint sealing plates are respectively positioned at two ends of the semi-circular arc-shaped joint sealing plate;
the temporary plugging tool for the joint comprises a special-shaped curved surface matched with the shape of the concave surface of the self-sealing joint tool, two sides of the special-shaped curved surface are symmetrically provided with a first type of groove for the clamping and embedding matching of the straight-line-shaped joint sealing plate and a third type of groove for the clamping and embedding matching of the straight-line-shaped connecting piece, the middle of the special-shaped curved surface is provided with a four-type groove for the second-type water-swelling water stop strip to be clamped and matched, one side of the special-shaped curved surface is provided with a second-class groove for the first-class fan-shaped water-swelling water stop strip to be clamped and matched, and the other side of the special-shaped curved surface is provided with a fifth-class groove for the third-class water-swelling water stop strip to be clamped and matched, and pushing devices used for separating the semi-arc-shaped joint sealing plate from the special-shaped curved surface are respectively arranged at two ends of the special-shaped curved surface in the temporary joint plugging tool.
One type of fan-shaped water swelling sealing rod centroid with the connection of semi-circular arc joint shrouding centre of a circle with semi-circular arc joint shrouding diameter between the contained angle be theta 1 and 0< theta 1<90 °, three types of water swelling sealing rod centroids with the connection of semi-circular arc joint shrouding centre of a circle with semi-circular arc joint shrouding diameter between the contained angle be theta 2 and 0< theta 2<90 °, theta 2 is different from theta 1. The fan-shaped water-swelling water stop strips, the second water-swelling water stop strips and the third water-swelling water stop strips are prevented from overlapping on the same longitudinal and transverse cross section, and the weakening effect of the water-swelling water stop strips on the rigidity and the strength of the underground continuous wall joint can be reduced through the arrangement.
One kind fan-shaped water swelling sealing rod of meeting water with three kinds of water swelling sealing rod deviate from the face of semicircle arc joint shrouding be the right angle shape, two kinds of water swelling sealing rod of meeting water deviate from the face of semicircle arc joint shrouding be the rectangle, four kinds of water swelling sealing rod of meeting water deviate from the face of semicircle arc joint shrouding be the rectangle.
The straight connecting piece protrudes 8-10cm on the outer arc surface of the semi-arc-shaped joint sealing plate and protrudes 4-5cm on the inner arc surface of the semi-arc-shaped joint sealing plate.
The first-class fan-shaped water-swelling water stop strip, the second-class water-swelling water stop strip, the third-class water-swelling water stop strip and the fourth-class water-swelling water stop strip are made of slow-swelling materials; the semi-circular arc-shaped joint sealing plate and the straight-line-shaped joint sealing plate are both steel plates; the straight-line-shaped connecting piece adopts ribbed steel bars with the diameter of 20-25 mm.
The thrusting devices are servo hydraulic jacks controlled by a wireless mode, and one group of the thrusting devices is arranged every 5-6 meters in the depth direction. The specific setting interval can be determined according to the length of the temporary plugging tool of the joint.
Compared with the prior art, the utility model has the advantages of: the utility model relates to an underground continuous wall joint structure contains from the two parts of sealing tool and the interim shutoff instrument of joint, and the underground continuous wall joint structure that the special design of this joint instrument formed compares existing underground continuous wall joint structure and has two big points: firstly, the seepage path is increased, and meanwhile, the self-plugging of the seepage path can be realized by arranging the water-swelling water stop strip according to a certain rule; secondly, a straight-line-shaped connecting piece is arranged, so that the connection performance of the joint is enhanced, and the risk of the joint seepage path is reduced. The temporary plugging tool for the joint is specially designed aiming at the self-sealing joint tool and the construction process of the underground continuous wall, so that the construction process is simple and the construction cost is low; in addition, the special structure of the steel reinforcement cage ensures the installation of the self-sealing joint tool and can ensure the thickness of the concrete protective layer within an allowable range; the design of the concave guide groove and the guide groove slide rail ensures that the temporary plugging tool for the joint is fixed and smoothly detached.
Drawings
FIG. 1 is a schematic view of the self-sealing joint tool of the underground diaphragm wall joint structure of the present invention;
fig. 2 is a schematic view of the temporary plugging tool for the joint structure joint of the underground continuous wall of the present invention;
FIG. 3 is a schematic view of the assembly of the self-sealing tool and the temporary sealing tool of the underground diaphragm wall joint structure of the present invention;
FIG. 4 is a schematic view of the structure forming joint structure of the diaphragm wall of the present invention;
FIG. 5 is a schematic diagram of the construction method of the underground diaphragm wall of the utility model before the concrete is poured into the groove section;
FIG. 6 is a schematic diagram of the construction method of the underground diaphragm wall after the concrete is poured into the front groove section;
FIG. 7 is a schematic view of the temporary plugging tool for joint structure of the underground diaphragm wall construction method of the present invention being lifted from the front groove section;
FIG. 8 is a schematic diagram of the temporary plugging tool of the joint structure according to the construction method of the diaphragm wall;
FIG. 9 is a schematic view of the jumping-width construction process of the construction method of the diaphragm wall of the present invention; wherein
1, a self-sealing joint tool, 11 semi-circular arc joint sealing plates, 12-shaped connecting pieces, 131-class fan-shaped water-swelling sealing strips, 132-class second-class water-swelling sealing strips, 133-class third-class water-swelling sealing strips, 134-class fourth-class water-swelling sealing strips and 14-shaped joint sealing plates;
2, a temporary plugging tool for the joint, a 21 pushing device, a 22 special-shaped curved surface, 231 first-class grooves, 232 second-class grooves, 233 third-class grooves, 234 fourth-class grooves and 235 fifth-class grooves;
constructing an underground continuous wall at the front section 31 and an underground continuous wall at the rear section 32;
underground continuous wall reinforcement cage constructed at front section 41 and underground continuous wall reinforcement cage constructed at rear section 42
5, a concave guide groove;
6 guide slot slide rail.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
An underground continuous wall joint structure is shown in figures 1, 2, 3 and 4 and comprises a self-sealing joint tool 1 and a joint temporary plugging tool 2;
as shown in FIG. 1, the self-sealing joint tool 1 comprises a semi-circular joint sealing plate 11, two in-line connectors 12, a first-class fan-shaped water swelling sealing strip 131, a second-class water swelling sealing strip 132, a third-class water swelling sealing strip 133, a fourth-class water swelling sealing strip 134 and two in-line joint sealing plates 14, wherein the in-line connectors 12 are symmetrically installed on the semi-circular joint sealing plate 11 and penetrate through both sides of the inner and outer arc surfaces thereof, the second-class water swelling sealing strip 132 is adhered to the middle of the inner arc surface of the semi-circular joint sealing plate 11, the first-class fan-shaped water swelling sealing strip 131 and the third-class water swelling sealing strip 133 are adhered to the inner arc surface of the semi-circular joint sealing plate 11, the first-class fan-shaped water swelling sealing strip 131 and the third-class water swelling sealing strip 133 are respectively located on both sides of the second-class water swelling sealing strip 132, and the, the straight-line-shaped joint seal plates 14 are respectively positioned at two ends of the semi-arc-shaped joint seal plate 11;
as shown in fig. 2 and 3, the temporary joint plugging tool 2 includes a special-shaped curved surface 22 matched with the concave shape of the self-sealing joint tool 1, two sides of the special-shaped curved surface 22 are symmetrically provided with a first-class groove 231 for clamping and embedding the first-class joint sealing plate 14 and a third-class groove 233 for clamping and embedding the first-class connecting piece 12, the middle of the special-shaped curved surface 22 is provided with a fourth-class groove 234 for clamping and embedding the second-class water-swelling sealing strip 132, one side of the special-shaped curved surface 22 is provided with a second-class groove 232 for clamping and embedding the first-class fan-shaped water-swelling sealing strip 131, the other side of the special-shaped curved surface 22 is provided with a fifth-class groove 235 for clamping and embedding the third-class water-swelling sealing strip 133, and two ends of the temporary joint plugging tool and the special-shaped curved surface 22 are respectively provided with thrust.
In this embodiment, as shown in fig. 1, the included angle between the line connecting the centroid of the fan-shaped water-swelling water stop strip 131 and the center of the semi-circular arc-shaped joint sealing plate 11 and the diameter of the semi-circular arc-shaped joint sealing plate 11 is 38 °, and the included angle between the line connecting the centroid of the three types of water-swelling water stop strips 133 and the center of the semi-circular arc-shaped joint sealing plate 11 and the diameter of the semi-circular arc-shaped joint sealing plate 11 is 17 °. The included angle can be other degrees within 0-90 degrees, as long as the fan-shaped water-swelling water stop strips 131, the second water-swelling water stop strips 132 and the third water-swelling water stop strips 133 can be prevented from being overlapped on the same cross section, and the weakening effect of the water-swelling water stop strips on the rigidity and the strength of the underground continuous wall joint can be reduced through the arrangement. The face of the first-class fan-shaped water swelling sealing rod 131 deviating from the semi-circular arc-shaped joint sealing plate 11 and the face of the third-class water swelling sealing rod 133 deviating from the semi-circular arc-shaped joint sealing plate 11 are right-angled shapes, the face of the second-class water swelling sealing rod 132 deviating from the semi-circular arc-shaped joint sealing plate 11 is rectangular, and the face of the fourth-class water swelling sealing rod 134 deviating from the semi-circular arc-shaped joint sealing plate 11. The straight connecting piece 12 protrudes 8-10cm on the outer arc surface of the semi-arc-shaped joint seal plate 11 and protrudes 4-5cm on the inner arc surface thereof.
In this embodiment, the first-class fan-shaped water-swelling sealing rod 131, the second-class water-swelling sealing rod 132, the third-class water-swelling sealing rod 133 and the fourth-class water-swelling sealing rod 134 are made of slow-swelling materials; the semi-circular arc-shaped joint seal plates 11 and the straight-line-shaped joint seal plates 14 are steel plates; the I-shaped connecting piece 12 adopts ribbed steel bars with the diameter of 20-25 mm. The thrusting devices 21 are servo hydraulic jacks controlled wirelessly, and are arranged in a group every 5-6 meters along the depth direction. The specific setting interval can be determined according to the length of the temporary plugging tool 2 for the joint.
The construction method of the underground diaphragm wall joint structure, as shown in fig. 4, 5, 6, 7, 8 and 9, includes the following steps:
(1) excavating the groove section of the front construction underground continuous wall 31 through the grooving equipment, and balancing the groove wall through slurry in the excavating process to avoid collapse;
(2) after the groove section of the front-section construction underground continuous wall 31 is excavated, synchronously placing the front-section construction underground continuous wall reinforcement cage 41, the self-sealing joint tool 1 and the joint temporary plugging tool 2 into the groove section through a crane, and further pouring concrete; wherein, both sides of the front section construction underground continuous wall reinforcement cage 41 are provided with self-sealing joint tools 1, the self-sealing joint tools 1 are embedded into the concave grooves of the front section construction underground continuous wall reinforcement cage 41, and the self-sealing joint tools 1 are fixedly connected to the front section construction underground continuous wall reinforcement cage 41 through a straight-line-shaped connecting piece 12;
(3) guide groove slide rails 6 are symmetrically arranged at two ends of the front construction underground continuous wall reinforcement cage 41 along the width direction of the groove section, concave guide grooves 5 capable of sliding back and forth on the guide groove slide rails 6 are arranged on the guide groove slide rails 6, the concave guide grooves 5 are aligned to the end parts of the joint temporary plugging tools 2, and the joint temporary plugging tools 2 are limited in grooves of the concave guide grooves 5; the concave guide groove 5 has a limiting effect on the temporary plugging tool 2 of the joint and guarantees the vertical drawing of the temporary plugging tool;
(4) after the concrete of the front construction underground continuous wall 31 is solidified, excavating the rear construction underground continuous wall 32 through trenching equipment, and avoiding collapse through slurry balance groove walls in the excavating process;
(5) after the excavation of the groove section of the rear construction underground continuous wall 32 is finished, the joint temporary plugging tool 2 is jacked away from the front construction underground continuous wall 31 by means of the jacking device 21 until the linear connecting piece 12 is separated from the three types of grooves 233, and the joint temporary plugging tool 2 slides along the guide groove slide rail 6 under the constraint of the concave guide groove 5 in the jacking process;
(6) vertically hoisting the temporary plugging tool 2 of the joint out along the concave guide groove 5 by using a crane;
(7) hoisting the reinforcement cage 42 of the rear construction underground continuous wall into the groove section of the rear construction underground continuous wall 32 by using a crane, and pouring concrete, wherein the critical position of the reinforcement cage 42 of the rear construction underground continuous wall and the self-sealing joint tool 1 is rectangular;
(8) and (5) repeating the steps (1) to (7) to finish the construction of the underground continuous wall.
The above embodiments are further illustrative of the present invention, but the scope of the present invention is subject to the claims.
Claims (6)
1. The utility model provides an underground continuous wall joint structure which characterized in that: comprises a self-sealing joint tool and a joint temporary plugging tool, wherein the self-sealing joint tool comprises a semi-circular arc joint sealing plate, two straight-line connecting pieces, a first-class fan-shaped water swelling sealing strip, a second-class water swelling sealing strip, a third-class water swelling sealing strip, a fourth-class water swelling sealing strip and two straight-line joint sealing plates, the straight-line connecting pieces are symmetrically arranged on the semi-circular arc joint sealing plate and penetrate through the two sides of the inner arc surface and the outer arc surface of the semi-circular arc joint sealing plate, the second-class water swelling sealing strip is pasted in the middle of the inner arc surface of the semi-circular arc joint sealing plate, the first-class fan-shaped water swelling sealing strip and the third-class water swelling sealing strip are pasted on the inner arc surface of the semi-circular arc joint sealing plate and are respectively positioned on the two sides of the second-class water swelling sealing strip, the four-class water swelling water stop bars are adhered to the middle of the outer arc surface of the semi-circular arc-shaped joint sealing plate, and the linear joint sealing plates are respectively positioned at two ends of the semi-circular arc-shaped joint sealing plate; the temporary plugging tool for the joint comprises a special-shaped curved surface matched with the shape of the concave surface of the self-sealing joint tool, two sides of the special-shaped curved surface are symmetrically provided with a first type of groove for the clamping and embedding matching of the straight-line-shaped joint sealing plate and a third type of groove for the clamping and embedding matching of the straight-line-shaped connecting piece, the middle of the special-shaped curved surface is provided with a four-type groove for the second-type water-swelling water stop strip to be clamped and matched, one side of the special-shaped curved surface is provided with a second-class groove for the first-class fan-shaped water-swelling water stop strip to be clamped and matched, and the other side of the special-shaped curved surface is provided with a fifth-class groove for the third-class water-swelling water stop strip to be clamped and matched, and pushing devices used for separating the semi-arc-shaped joint sealing plate from the special-shaped curved surface are respectively arranged at two ends of the special-shaped curved surface in the temporary joint plugging tool.
2. An underground diaphragm wall joint structure according to claim 1, wherein: one type of fan-shaped water swelling sealing rod centroid with the connection of semi-circular arc joint shrouding centre of a circle with semi-circular arc joint shrouding diameter between the contained angle be theta 1 and 0< theta 1<90 °, three types of water swelling sealing rod centroids with the connection of semi-circular arc joint shrouding centre of a circle with semi-circular arc joint shrouding diameter between the contained angle be theta 2 and 0< theta 2<90 °, theta 2 is different from theta 1.
3. An underground diaphragm wall joint structure according to claim 1, wherein: one kind fan-shaped water swelling sealing rod of meeting water with three kinds of water swelling sealing rod deviate from the face of semicircle arc joint shrouding be the right angle shape, two kinds of water swelling sealing rod of meeting water deviate from the face of semicircle arc joint shrouding be the rectangle, four kinds of water swelling sealing rod of meeting water deviate from the face of semicircle arc joint shrouding be the rectangle.
4. An underground diaphragm wall joint structure according to claim 1, wherein: the straight connecting piece protrudes 8-10cm on the outer arc surface of the semi-arc-shaped joint sealing plate and protrudes 4-5cm on the inner arc surface of the semi-arc-shaped joint sealing plate.
5. An underground diaphragm wall joint structure according to claim 1, wherein: the first-class fan-shaped water-swelling water stop strip, the second-class water-swelling water stop strip, the third-class water-swelling water stop strip and the fourth-class water-swelling water stop strip are made of slow-swelling materials; the semi-circular arc-shaped joint sealing plate and the straight-line-shaped joint sealing plate are both steel plates; the straight-line-shaped connecting piece adopts ribbed steel bars with the diameter of 20-25 mm.
6. An underground diaphragm wall joint structure according to claim 1, wherein: the thrusting devices are servo hydraulic jacks controlled by a wireless mode, and one group of the thrusting devices is arranged every 5-6 meters in the depth direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920326163.7U CN210636422U (en) | 2019-03-14 | 2019-03-14 | Underground continuous wall joint structure |
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| CN201920326163.7U CN210636422U (en) | 2019-03-14 | 2019-03-14 | Underground continuous wall joint structure |
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| CN210636422U true CN210636422U (en) | 2020-05-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055952A (en) * | 2019-03-14 | 2019-07-26 | 姚燕明 | A kind of underground continuous wall connector structure and its construction method |
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- 2019-03-14 CN CN201920326163.7U patent/CN210636422U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055952A (en) * | 2019-03-14 | 2019-07-26 | 姚燕明 | A kind of underground continuous wall connector structure and its construction method |
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