Pipe gallery construction joint and deformation joint junction waterproof structure and construction method

Abstract

The application relates to a pipe gallery construction joint and deformation joint intersection waterproof structure and a construction method, which comprises the following steps: embedding a first rubber waterstop in a pipe gallery deformation joint; embedding a steel plate waterstop in a pipe gallery construction joint, wherein the steel plate waterstop is vertically arranged with the first rubber waterstop; embedding a second rubber waterstop in the pipe gallery construction joint, wherein one end of the second rubber waterstop is recessed from the top along the axial direction of the second rubber waterstop and forms a receiving groove, the end of the steel plate waterstop is inserted into the receiving groove, and the other end of the second rubber waterstop is bonded with the first rubber waterstop. The arrangement of the second rubber waterstop avoids the generation of gaps at the intersection of the traditional steel plate waterstop and the first rubber waterstop, plays a good waterproof role, ensures the formation of a closed and continuous waterstop space between the construction joint and the deformation joint, greatly improves the waterstop effect, and has a simple structure.

Description

Technical Field

[0001] This application relates to the field of waterproofing technology for utility tunnels, and in particular to a waterproofing structure and construction method for the junction of construction joints and expansion joints in utility tunnels. Background Technology

[0002] During the construction of integrated utility tunnels, circumferential expansion joints and longitudinal construction joints are usually required according to different structural forms. To ensure the quality of waterproofing construction, embedded waterstop steel plates are generally installed at construction joints for waterproofing, while embedded steel-edged rubber waterstops are generally installed at expansion joints for waterproofing. Since longitudinal and circumferential construction joints inevitably intersect vertically, the waterstop steel plates embedded in the longitudinal construction joints and the steel-edged rubber waterstops embedded in the circumferential construction joints will overlap at the intersection, resulting in discontinuous and non-sealed waterproofing of the waterstop steel plates and steel-edged rubber waterstops. The waterproofing at the intersection of the waterstop steel plates and steel-edged rubber waterstops becomes the weak point of the entire waterproofing system. Therefore, it is necessary to connect the rubber waterstops of the expansion joints with the steel plate waterstops of the construction joints.

[0003] In related technologies, the commonly used cross-joint connection between rubber waterstops and steel plate waterstops employs the following two methods:

[0004] (1) Direct anchoring. Direct anchoring has a short service life, the anchor joint is prone to separation and poor sealing, resulting in serious water leakage and poor waterproofing effect;

[0005] (2) Using nitrile rubber putty to bond the waterstop steel plate and the steel edge rubber waterstop can solve the problem of fixing the waterstop steel plate and the steel edge rubber waterstop. However, nitrile rubber putty is often applied manually, and it is difficult to achieve a uniform coating thickness. Therefore, it cannot achieve a relatively consistent waterproof effect at the junction. Summary of the Invention

[0006] This application provides a waterproof structure and construction method for the junction of construction joints and expansion joints in pipe gallery, in order to solve the problem of poor waterproofing effect caused by the connection of steel plate waterstops in construction joints and rubber waterstops in expansion joints in related technologies.

[0007] To achieve its objectives, the present invention employs the following technical solution:

[0008] Firstly, this application provides a waterproof structure at the junction of a pipe gallery construction joint and an expansion joint, comprising:

[0009] The first rubber waterstop is embedded in the expansion joint of the pipe gallery;

[0010] A steel plate waterstop is embedded in the construction joint of the pipe gallery, and the steel plate waterstop is set perpendicular to the first rubber waterstop.

[0011] A second rubber waterstop is embedded in the construction joint of the pipe gallery. One end of the second rubber waterstop is recessed along its axial direction from its top to form a receiving groove. The end of the steel plate waterstop is inserted into the receiving groove.

[0012] The other end of the second rubber waterstop is bonded to the first rubber waterstop.

[0013] In some embodiments, there are multiple steel plate waterstops, with two adjacent steel plate waterstops symmetrically distributed on both sides of the first rubber waterstop.

[0014] In some embodiments, an adhesive coating is provided between the second rubber waterstop and the steel plate waterstop.

[0015] In some embodiments, the adhesive is selected from bitumen.

[0016] In some embodiments, the depth of the receiving groove is 20–30 cm.

[0017] In some embodiments, the distance between the end of the steel plate waterstop and the first rubber waterstop is 60-80 cm.

[0018] Secondly, this application also provides a construction method for a waterproof structure at the junction of a pipe gallery construction joint and an expansion joint, comprising the following steps:

[0019] Insert the end of the steel plate waterstop to be connected into the receiving groove of the second rubber waterstop;

[0020] The end of the second rubber waterstop overlaps with the first rubber waterstop.

[0021] The second rubber waterstop and the first rubber waterstop are joined by heat fusion using a heat fusion device.

[0022] In some embodiments, the overlap width between the second rubber waterstop and the first rubber waterstop is 3 to 5 cm.

[0023] In some embodiments, the process of "inserting the end of the steel plate waterstop to be connected into the receiving groove of the second rubber waterstop" further includes:

[0024] Apply adhesive to the ends of the steel plate waterstops to be connected.

[0025] In some embodiments, "hot-melting the connection between the second rubber waterstop and the first rubber waterstop using a hot-melt device" includes:

[0026] Use clamps to tighten the overlap between the second and first rubber waterstops, heat to 150-170℃, and maintain for 10-15 minutes.

[0027] The beneficial effects of the technical solution provided in this application include: by using a second rubber waterstop to replace part of the steel plate waterstop at the intersection of the construction joint and the expansion joint, and using the second rubber waterstop as a link to connect the first rubber waterstop and the steel plate waterstop, the end of the steel plate waterstop is inserted into the receiving groove of the second rubber waterstop. The second rubber waterstop and the first rubber waterstop can be bonded together by heat fusion. The setting of the second rubber waterstop avoids the gaps generated at the intersection of the traditional steel plate waterstop and the first rubber waterstop, and plays a good waterproof role, thereby ensuring that a closed and continuous waterstop space is formed between the construction joint and the expansion joint, the waterstop effect is greatly improved, the structure is simple, and its construction process is easy to operate. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the waterproof structure at the junction of the construction joint and the expansion joint of the pipe gallery provided in this embodiment of the application;

[0030] Figure 2 A cross-sectional view of the steel plate waterstop provided in the embodiments of this application;

[0031] Figure 3 This is a cross-sectional view of the second rubber waterstop provided in an embodiment of this application.

[0032] In the figure: 1. First rubber waterstop; 2. Steel plate waterstop; 3. Second rubber waterstop; 31. Receiving groove. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] See Figures 1-3 In a first aspect, embodiments of this application provide a waterproof structure at the junction of a pipe gallery construction joint and an expansion joint, comprising:

[0035] The first rubber waterstop 1 is embedded in the expansion joint of the pipe gallery;

[0036] The steel plate waterstop 2 is embedded in the construction joint of the pipe gallery, and the steel plate waterstop 2 is set perpendicular to the first rubber waterstop 1.

[0037] The second rubber waterstop 3 is embedded in the construction joint of the pipe gallery. One end of the second rubber waterstop 3 is recessed along its axial direction from its top to form a receiving groove 31. The end of the steel plate waterstop 2 is inserted into the receiving groove 31.

[0038] The other end of the second rubber waterstop 3 is bonded to the first rubber waterstop 1.

[0039] This application replaces part of the steel plate waterstop at the intersection of construction joint and expansion joint with a second rubber waterstop 3. The first rubber waterstop 1 and the steel plate waterstop 2 are connected by the second rubber waterstop 3. The end of the steel plate waterstop 2 is inserted into the receiving groove 31 of the second rubber waterstop 3. The second rubber waterstop 3 and the first rubber waterstop 1 can be bonded by heat fusion. The setting of the second rubber waterstop 3 avoids the gaps that are generated at the intersection of the traditional steel plate waterstop and the first rubber waterstop, and plays a good role in waterproofing. This ensures that a closed and continuous waterstop space is formed between the construction joint and the expansion joint, greatly improving the waterstop effect and simplifying the structure.

[0040] In some embodiments, there are multiple steel plate waterstops 2, with two adjacent steel plate waterstops 2 symmetrically distributed on both sides of the first rubber waterstop 1.

[0041] In traditional pipe gallery structures, the steel plate waterstop at the construction joint and the rubber waterstop at the expansion joint are usually intersected and overlapped. However, in this embodiment, the steel plate waterstop at the construction joint no longer extends beyond the expansion joint. Instead, the steel plate waterstop 2 is cut on both sides of the first rubber waterstop 1 at the expansion joint, leaving an installation space for the second rubber waterstop 3 between the end of the steel plate waterstop 2 and the first rubber waterstop 1. The second rubber waterstop 3 can seal the gap of the construction joint on the one hand, and on the other hand, it can be bonded to the first rubber waterstop 1 at the expansion joint, especially by heat bonding, so that the second rubber waterstop 3 and the first rubber waterstop 1 are seamlessly connected, thereby achieving a seal between the construction joint and the expansion joint.

[0042] It should be noted that in actual construction, steel plate waterstops of appropriate length can be produced through upstream processes. When installed in construction joints, the distance between the end of the waterstop and the first rubber waterstop is within the preset range, eliminating the need for on-site cutting of the steel plate waterstop and simplifying the construction process.

[0043] Specifically, each steel plate waterstop 2 is connected to the first rubber waterstop 1 using the second rubber waterstop 3.

[0044] See Figure 2-3One end of the second rubber waterstop 3 is recessed along the axial direction of the second rubber waterstop 3 from its top to form a receiving groove 31, so that the end of the steel plate waterstop 2 can be inserted into the receiving groove 31, thereby improving the connection stability between the second rubber waterstop 3 and the steel plate waterstop 2 and facilitating construction.

[0045] In a preferred embodiment, the shape of the receiving groove 31 matches the shape of the steel plate waterstop 2, minimizing the gap between the second rubber waterstop 3 and the steel plate waterstop 2. This improves the connection stability between the second rubber waterstop 3 and the steel plate waterstop 2, and also enhances the sealing between them, thus strengthening the waterproofing effect at the construction joint.

[0046] In some embodiments, an adhesive coating is provided between the second rubber waterstop 3 and the steel plate waterstop 2.

[0047] To improve the connection strength and waterproofing effect between the second rubber waterstop 3 and the steel plate waterstop 2, an adhesive is used to bond the second rubber waterstop 3 and the steel plate waterstop 2.

[0048] In some embodiments, the adhesive is selected from bitumen.

[0049] The adhesive is preferably made of asphalt, which has the advantages of good adhesion and waterproofing.

[0050] In some embodiments, the depth of the receiving groove 31 is 20 to 30 cm.

[0051] The depth of the receiving groove 31 is 20-30cm. On the one hand, if the depth of the receiving groove 31 is too small, the insertion depth of the steel plate waterstop 2 in the second rubber waterstop 3 will be too small, which is not conducive to ensuring the connection stability between the second rubber waterstop 3 and the steel plate waterstop 2. On the other hand, if the depth of the receiving groove 31 is too large, it may cause the insertion time to be too long and the insertion operation to be inconvenient, which is not conducive to the construction.

[0052] In some embodiments, the distance between the end of the steel plate waterstop 2 and the first rubber waterstop 1 is 60-80cm.

[0053] It should be noted that the distance of 60-80cm between the end of the steel plate waterstop 2 and the edge of the first rubber waterstop 1 refers to the distance between the end of the steel plate waterstop 2 and the edge of the first rubber waterstop 1. This distance indirectly determines the length of the second rubber waterstop 3. If the distance between the end of the steel plate waterstop 2 and the first rubber waterstop 1 is too small, the installation of the second rubber waterstop 3 will be difficult, increasing the construction difficulty. If the distance between the end of the steel plate waterstop 2 and the first rubber waterstop 1 is too large, the length of the second rubber waterstop 3 in the construction joint will be too large. Due to the large settlement deformation at the construction joint, if a large area of ​​rubber waterstop is used as the waterproof structure, the rubber has low rigidity and is easily torn. During long-term use, the second rubber waterstop may deform and crack, reducing the waterproof effect at the construction joint.

[0054] Secondly, this application also provides a construction method for a waterproof structure at the junction of a pipe gallery construction joint and an expansion joint, comprising the following steps:

[0055] Insert the end of the steel plate waterstop 2 to be connected into the receiving groove 31 of the second rubber waterstop 3;

[0056] The end of the second rubber waterstop 3 overlaps with the first rubber waterstop 1;

[0057] The second rubber waterstop 3 and the first rubber waterstop 1 are connected by heat fusion using a heat fusion device.

[0058] Furthermore, the construction method for the waterproof structure at the junction of the pipe gallery construction joint and the expansion joint provided in this application specifically includes the following steps:

[0059] Step 1: Set the distance between the end of the steel plate waterstop in the construction joint and the expansion joint to 0.6m;

[0060] Step 2: Grind the end of the steel plate waterstop, with a grinding area length of 20 cm. After grinding, coat the surface with a rubber asphalt mixture at a ratio of 2:5.

[0061] Step 3: Provide a self-made second rubber waterstop, wherein one end of the second rubber waterstop is provided with a sleeve, the width of the sleeve is 3mm wider than the steel plate waterstop, the height is 3mm higher than the steel plate waterstop, and the depth is 23mm;

[0062] Step 4: Place the sleeve of the second rubber waterstop onto the end of the steel plate waterstop coated with rubber asphalt, and use extrusion equipment to firmly press the sleeve onto the steel plate waterstop. Then, use professional equipment to perform connection and permeability tests.

[0063] Step 5: The other end of the second rubber waterstop extends to the expansion joint and overlaps the first rubber waterstop, with an overlap width of 30mm ± 5mm.

[0064] Step 6: Use a hot-melt device to heat-melt the second rubber waterstop to the first rubber waterstop.

[0065] The construction method of the waterproof structure provided in this application embodiment involves simply fitting one end of the second rubber waterstop 3 onto the steel plate waterstop 2 and thermally bonding the other end to the first rubber waterstop 1. This method is simple to operate, has low construction costs, and provides good waterproofing.

[0066] In some embodiments, the overlap width between the second rubber waterstop 3 and the first rubber waterstop 1 is 3 to 5 cm.

[0067] It should be noted that the width refers to the length of the overlapping portion of the second rubber waterstop 3 and the first rubber waterstop 1 along the axis parallel to the second rubber waterstop 3. The overlap width between the second rubber waterstop 3 and the first rubber waterstop 1 is 3 to 5 cm, which can ensure that there is sufficient overlap area between the second rubber waterstop 3 and the first rubber waterstop 1 and improve the stability of the connection between the two.

[0068] In some embodiments, the process of "inserting the end of the steel plate waterstop 2 to be connected into the receiving groove of the second rubber waterstop 3" further includes:

[0069] Apply adhesive to the ends of the steel plate waterstop 2 to be connected.

[0070] The coating length of the adhesive in the preferred steel plate waterstop 2 is equal to the depth of the receiving groove 31, which ensures bonding stability while reducing production costs.

[0071] In some embodiments, "hot-melting the connection between the second rubber waterstop 3 and the first rubber waterstop 1 using a hot-melt device" includes:

[0072] Use clamps to tighten the overlap between the second rubber waterstop 3 and the first rubber waterstop 1, raise the temperature to 150-170℃, and maintain it for 10-15 minutes.

[0073] At 150-170℃, the second rubber waterstop 3 and the first rubber waterstop 1 are fused together at the overlap, and a certain pressure is applied to the overlap by the clamp to increase the connection between the two and improve the waterproof effect.

[0074] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0075] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0076] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A waterproof structure at the junction of construction joints and expansion joints in a pipe gallery, characterized in that, include: The first rubber waterstop (1) is embedded in the expansion joint of the pipe gallery; The steel plate waterstop (2) is embedded in the construction joint of the pipe gallery, and the steel plate waterstop (2) is set perpendicular to the first rubber waterstop (1); The second rubber waterstop (3) is embedded in the construction joint of the pipe gallery. One end of the second rubber waterstop (3) is recessed along the axial direction of the second rubber waterstop (3) from its top to form a receiving groove (31). The end of the steel plate waterstop (2) is inserted into the receiving groove (31). The other end of the second rubber waterstop (3) is bonded to the first rubber waterstop (1) by hot melt bonding; There are multiple steel plate waterstops (2), and two adjacent steel plate waterstops (2) are symmetrically distributed on both sides of the first rubber waterstop (1); An adhesive coating is provided between the second rubber waterstop (3) and the steel plate waterstop (2); The adhesive is selected from asphalt; The depth of the receiving groove (31) is 20-30cm; The distance between the end of the steel plate waterstop (2) and the first rubber waterstop (1) is 60-80cm.

2. The construction method for the waterproof structure at the junction of the pipe gallery construction joint and the expansion joint as described in claim 1, characterized in that, The steps include the following: Insert the end of the steel plate waterstop to be connected into the receiving groove of the second rubber waterstop; The end of the second rubber waterstop overlaps with the first rubber waterstop. The second rubber waterstop and the first rubber waterstop are joined by heat fusion using a heat fusion device.

3. The construction method for the waterproof structure at the junction of the pipe gallery construction joint and the expansion joint as described in claim 2, characterized in that, The overlap width between the second rubber waterstop and the first rubber waterstop is 3-5 cm.

4. The construction method for the waterproof structure at the junction of the construction joint and the expansion joint of the pipe gallery as described in claim 2, characterized in that, Before "inserting the end of the steel plate waterstop to be connected into the receiving groove of the second rubber waterstop", the following steps are also included: Apply adhesive to the ends of the steel plate waterstops to be connected.

5. The construction method for the waterproof structure at the junction of the pipe gallery construction joint and the expansion joint as described in claim 2, characterized in that, "Hot-melt connection of the second rubber waterstop and the first rubber waterstop using a hot-melt equipment" includes: Use clamps to tighten the overlap between the second and first rubber waterstops, heat to 150-170℃, and maintain for 10-15 minutes.

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