Structural joint structure and construction method of comprehensive pipe gallery

Abstract

The present invention relates to a structural seam structure of an integrated pipe gallery and a construction method. The structure is arranged at intervals along the longitudinal direction of the integrated pipe gallery. The structural seam structure is arranged in the cast-in-place structural part of the integrated pipe gallery. The cast-in-place structural part is divided into a first-cast section and a second-cast section by the structural seam as a boundary. The structural seam structure includes: a structural seam formed at the butt joint of the first-cast section and the second-cast section; a water stop strip partially buried in the first-cast section, and the other part of the water stop strip extends from the first-cast section and is buried in the second-cast section; a lower steel cage and an upper steel cage buried in the first-cast section, arranged close to the structural seam; and longitudinal steel bars buried in the first-cast section, and part of the longitudinal steel bars extend from the first-cast section and are buried in the second-cast section. Structural seams with low structural strength are arranged at intervals along the longitudinal direction of the integrated pipe gallery. When subjected to stress, cracks may occur at the structural seams, thereby avoiding the difficulty of repair caused by disordered cracking.

Description

Technical Field

[0001] The invention relates to the field of integrated pipe gallery construction engineering, and in particular to an integrated pipe gallery structural seam structure and a construction method thereof. Background Art

[0002] The construction of urban underground comprehensive pipeline corridors is one of the important contents of my country's future urban infrastructure construction. According to the "Technical Specifications for Urban Comprehensive Pipeline Corridor Engineering", structural deformation joints must be set up every 30 meters of the comprehensive pipeline corridor.

[0003] The setting of expansion joints solves the problems of uneven settlement and concrete shrinkage of open-cut underground structures, but increases the difficulty of waterproofing the integrated pipe gallery. Expansion joints are deformable gaps left on the structure of the integrated pipe gallery, and the gaps are usually filled with flexible materials. When uneven settlement of underground structures and concrete shrinkage occur, the stress generated acts on the expansion joints, causing large deformation of the expansion joints. Usually, large deformation will destroy the waterproof structure of the expansion joints. Once water seepage occurs in the expansion joints, it not only reduces the durability of the concrete, but also deteriorates the environment of the pipe gallery, affects the use of structural facilities, and causes difficulties in later management. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a comprehensive pipe gallery structural joint structure and a construction method thereof, so as to solve the problem that the deformation joints set in the existing comprehensive pipe gallery are prone to water seepage after large deformation, thereby affecting the quality of the concrete structure.

[0005] The technical solution to achieve the above purpose is:

[0006] The present invention provides a construction method for a structural seam structure of an integrated pipe gallery, wherein the structural seam structure is arranged at intervals along the longitudinal direction of the integrated pipe gallery, and the structural seam structure is arranged in a cast-in-place structural part of the integrated pipe gallery; the construction method comprises the following steps:

[0007] The cast-in-place structure is divided into a first-cast section and a later-cast section according to the structural joints, and formwork is set up according to the setting position of the first-cast section to enclose the casting space of the first-cast section;

[0008] Putting a lower layer steel cage into the pouring space of the first pouring section near the structural joint;

[0009] Providing a water stop belt, wherein a portion of the water stop belt is fixedly mounted on the lower steel cage, and another portion of the water stop belt is passed through a corresponding formwork and is placed at a location where the post-casting section is to be set;

[0010] Placing an upper steel cage above the lower steel cage;

[0011] Opening holes on the template to form through holes;

[0012] Passing part of the longitudinal steel bars in the pouring space of the first pouring section through the corresponding through holes and placing them at the setting position of the later pouring section;

[0013] pouring concrete into the pouring space of the precast section to form the precast section, and removing the formwork after curing; and

[0014] A formwork is set up according to the setting position of the post-casting section to enclose the pouring space of the post-casting section, and concrete is poured into the pouring space of the post-casting section to form the post-casting section. The structural joint is formed at the joint between the post-casting section and the pre-casting section, and the post-casting section anchors the other part of the waterstop strip and the longitudinal steel bars passing through the through hole.

[0015] During the construction of the integrated pipe gallery, the present invention uses the joints of the concrete poured successively to form a structural joint. The structural joint is provided with longitudinal reinforcements connecting the first pouring section and the last pouring section. Since the longitudinal reinforcements are only partially provided, the structural strength of the structural joint is reduced. On the entire integrated pipe gallery, structural joints with lower structural strength are provided along the longitudinal intervals thereof, so that when the integrated pipe gallery cracks due to temperature stress and uneven settlement, it can crack at the provided structural joints, avoiding the difficulty of repair caused by disordered cracking. A water stop is buried at the structural joint, and the water stop is used to improve the waterproof effect of the structural joint. Since the strength of the structural joint is much greater than the deformation joint in the prior art, the cracking degree thereof is small, and the occurrence of water leakage can be avoided to a certain extent.

[0016] A further improvement of the construction method of the integrated pipe gallery structural joint structure of the present invention is that before pouring concrete in the pouring space of the back pouring section, it also includes:

[0017] Put another lower layer steel cage in the pouring space of the post-casting section near the structural joint, and place the other lower layer steel cage below the corresponding part of the water stop;

[0018] Another upper steel cage is placed above the other lower steel cage, and the other upper steel cage is placed above the corresponding part of the water stop.

[0019] A further improvement of the construction method of the integrated pipe gallery structural seam structure of the present invention is that the step of passing part of the longitudinal steel bars in the pouring space of the first pouring section through the corresponding through holes and placing them at the setting position of the later pouring section includes:

[0020] Two-thirds of the longitudinal reinforcement in the pouring space of the first pouring section passes through the corresponding through holes and is placed at the setting position of the later pouring section.

[0021] A further improvement of the construction method of the integrated pipe gallery structural joint structure of the present invention is that before pouring concrete into the pouring space of the first pouring section, it also includes:

[0022] Providing a grouting conduit, and placing the grouting conduit obliquely in the pouring space of the first pouring section;

[0023] The bottom of the grouting conduit is pressed against the template located at the structural joint, and the top of the grouting conduit is extended from the surface of the first pouring section located inside the integrated pipe gallery to form a grouting port;

[0024] The grouting conduit is fixedly connected to the upper reinforcement cage.

[0025] A further improvement of the construction method of the structural seam structure of the integrated pipe gallery of the present invention is that before the construction of the cast-in-place structure part at the bottom plate of the integrated pipe gallery, it also includes:

[0026] Excavate downwards at the position corresponding to the structural joint on the bottom of the integrated pipe gallery to form a strip groove;

[0027] Placing a cushion layer steel reinforcement cage in the strip-shaped groove;

[0028] Constructing a bottom plate cushion layer and forming a reinforcement structure in the strip groove;

[0029] Modified waterproof asphalt felt is laid on the base plate cushion layer.

[0030] The present invention also provides a structural seam structure of an integrated pipe gallery, which is arranged at intervals along the longitudinal direction of the integrated pipe gallery, and the structural seam structure is arranged in a cast-in-place structural part of the integrated pipe gallery, and the cast-in-place structural part is divided into a first cast section and a later cast section by the structural seam; the structural seam structure includes:

[0031] A structural joint formed at the joint between the first pouring section and the last pouring section;

[0032] A water stop strip partially buried in the first pouring section, and another portion of the water stop strip extending from the first pouring section and buried in the second pouring section;

[0033] A lower steel cage and an upper steel cage embedded in the precast section, wherein the lower steel cage and the upper steel cage are disposed close to the structural joint and are located below and above corresponding portions of the water stop; and

[0034] The longitudinal steel bars are embedded in the first-cast section, and part of the longitudinal steel bars extend from the first-cast section and are embedded in the second-cast section.

[0035] A further improvement in the structural joint structure of the integrated pipe gallery of the present invention is that it also includes another lower steel cage and another upper steel cage buried in the post-cast section, and the other lower steel cage and the other upper steel cage are arranged close to the structural joint and are located below and above the corresponding parts of the water stop belt.

[0036] A further improvement of the structural seam structure of the integrated pipe gallery of the present invention is that 2 / 3 of the longitudinal steel bars in the first cast section extend from the first cast section and are buried in the later cast section.

[0037] A further improvement of the structural joint structure of the integrated pipe gallery of the present invention is that it also includes a grouting conduit buried in the first pouring section, the grouting conduit is arranged in an inclined shape, the bottom is located at the structural joint, the top extends from the surface of the first pouring section located inside the integrated pipe gallery to form a grouting port, and the grouting conduit is fixedly connected to the upper steel cage.

[0038] A further improvement in the structural seam structure of the integrated pipe gallery of the present invention is that it also includes a reinforcement structure integrally formed with a bottom plate cushion layer arranged at the bottom plate of the integrated pipe gallery and a modified waterproof asphalt felt laid on the bottom plate cushion layer, the reinforcement structure is arranged corresponding to the position of the structural seam, and a cushion layer steel cage is anchored in the reinforcement structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic transverse cross-sectional view of the integrated pipeline corridor at the structural seam structure of the integrated pipeline corridor of the present invention.

[0040] Figure 2 It is a cross-sectional view of the structural seam structure of the integrated pipe gallery of the present invention located at the bottom plate of the integrated pipe gallery.

[0041] Figure 3 It is a schematic diagram of the structure of the longitudinal steel bars and the structural joints in the structural joint structure of the comprehensive pipe gallery of the present invention. DETAILED DESCRIPTION

[0042] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0043] See also Figure 1 The present invention provides a structural seam structure of an integrated pipe gallery and a construction method thereof, which are used to solve the problems of disordered cracking caused by temperature stress and uneven settlement, and water leakage in the pipe gallery caused by setting deformation joints. The present invention sets a number of weak links with relatively small rigidity along the longitudinal direction of the integrated pipe gallery, and reduces the rigidity by setting the number of longitudinal steel bars passing through. When stress changes due to temperature difference, concrete shrinkage or uneven settlement, the section where the structural seam is located can be cracked first, releasing the energy in the concrete body and avoiding random cracks in the concrete structure, thereby reducing the harm of the cracks to the integrated pipe gallery. The structural seam has a certain structural strength, which can reduce the degree of cracking or deformation, thereby avoiding a large impact on the water-stopping effect, thereby avoiding the occurrence of water leakage. A grouting conduit is preset at the structural seam, and the grouting conduit can be used to quickly repair the structural seam after it is cracked in the later stage, which is convenient for construction. The structural seam structure of the integrated pipe gallery of the present invention and its construction method are described below in conjunction with the accompanying drawings.

[0044] See also Figure 1 , showing a schematic transverse cross-sectional view of the integrated pipe gallery at the structural seam structure of the integrated pipe gallery of the present invention. Figure 2 , showing a cross-sectional view of the integrated pipe gallery structural seam structure of the present invention located at the bottom plate of the integrated pipe gallery. Figure 1 and Figure 2 , the structural seam structure of the comprehensive pipeline corridor of the present invention is explained.

[0045] like Figure 1 and Figure 2 As shown, the structural seam structure 20 of the integrated pipeline corridor of the present invention is arranged at intervals along the longitudinal direction of the integrated pipeline corridor 10, and the structural seam structure 20 is arranged in the cast-in-place structural part 18 of the integrated pipeline corridor 10. The cast-in-place structural part 18 is divided into a first cast section 181 and a later cast section 182 by the structural seam 21.

[0046] The integrated pipe gallery 10 of the present invention can be a cast-in-place pipe gallery or a prefabricated pipe gallery, and the prefabricated pipe gallery is connected by a cast-in-place connecting section. In a cast-in-place pipe gallery, the cast-in-place structural part 18 is the integrated pipe gallery structure. In a prefabricated pipe gallery, the cast-in-place structural part 18 is a cast-in-place connecting section.

[0047] The structural joint structure 20 of the present invention includes a structural joint 21, a water stop 24, an upper steel cage 23, a lower steel cage 22 and a portion of the longitudinal steel bars 16; wherein the structural joint 21 is formed at the joint between the first-cast section 181 and the second-cast section 182. After the first-cast section 181 is cast, the end surface close to the second-cast section 182 to be constructed serves as the end template of the second-cast section 182. When the second-cast section 182 is cast, the concrete of the second-cast section 182 is connected to the end surface of the first-cast section 181, so that the joint of the two concretes cast successively forms a structural joint 21. That is, the structural joint 21 of the present invention is not a real gap, but a joint where the first-cast section 181 and the second-cast section 182 are connected.

[0048] A portion of the waterstop 24 of the present invention is buried in the first poured section 181, and another portion of the waterstop 24 extends from the first poured section 181 and is buried in the later poured section 182. The waterstop 24 is arranged perpendicular to the structural joint 21. The waterstop 24 is used to block the permeable path connecting the inside and outside of the integrated pipeline corridor 10 along the setting direction of the structural joint 21, thereby playing a role in water stopping and preventing leakage.

[0049] The lower steel cage 22 and the upper steel cage 23 of the present invention are buried in the first pouring section 181, and the lower steel cage 22 and the upper steel cage 23 are arranged close to the structural joint 21 and are located below and above the corresponding part of the water stop 24. The upper steel cage 23 and the lower steel cage 22 arranged on the side of the structural joint 21 improve the structural strength of the structural joint structure 20, and the upper steel cage 23 and the lower steel cage 22 are arranged above and below the corresponding part of the water stop 24, which can also play a certain protective role for the water stop 24. While the upper steel cage 23 and the lower steel cage 22 improve the structural strength of the structural joint structure 20, they can suppress the degree of cracking of the structural joint 21, thereby avoiding damage to the water stop 24 and protecting the waterproof effect of the water stop 24.

[0050] The longitudinal steel bars 16 are arranged along the setting direction of the integrated pipe gallery 10, and the longitudinal steel bars 16 are arranged at intervals in the precast section 181. A part of the longitudinal steel bars 16 in the precast section 181 extends from the precast section 181 and is buried in the postcast section 182. A certain number of longitudinal steel bars 16 are used to tie and connect the precast section 181 and the postcast section 182, providing a certain rigidity and strength for the structural joint structure 20, but the rigidity and strength at the structural joint 21 of the structural joint structure 20 are lower than the structural rigidity and strength of the rest of the integrated pipe gallery 10, so that when the integrated pipe gallery 10 is subjected to stress changes caused by temperature difference, concrete shrinkage or uneven settlement, the structural joint 21 as a weak node can be cracked and deformed first, thereby releasing the stress on the integrated pipe gallery structure, avoiding random cracks in the rest of the integrated pipe gallery structure, making the crack position of the integrated pipe gallery controllable, and the structural joint 21 with a certain rigidity and strength can reduce the degree of cracking, thereby ensuring the water-stopping effect and avoiding water leakage.

[0051] In a specific embodiment, the structural joint structure 20 of the present invention further includes another lower steel cage 22' and another upper steel cage 23' buried in the post-casting section 182, and the other lower steel cage 22' and the other upper steel cage 23' are arranged close to the structural joint 21 and are located below and above the corresponding part of the water stop 24. Similarly, the other lower steel cage 22' and the other upper steel cage 23' arranged in the post-casting section 182 are used to improve the structural strength of the structural joint structure 20, and the other lower steel cage 22' and the other upper steel cage 23' are arranged above and below the corresponding part of the water stop 24, which can also play a certain protective role for the water stop 24. While the other lower steel cage 22' and the other upper steel cage 23' improve the structural strength of the structural joint structure 20, they can suppress the degree of cracking of the structural joint 21, thereby avoiding damage to the water stop 24 and protecting the waterproof effect of the water stop 24.

[0052] In a specific embodiment, combining Figure 2 and Figure 3As shown, 2 / 3 of the longitudinal steel bars 16 in the first cast section 181 extend from the first cast section 181 and are buried in the second cast section 182. 2 / 3 of the total number of longitudinal steel bars 16 pass through the structural joint 21, that is, part of the 2 / 3 longitudinal steel bars 16 are buried in the first cast section 181 and part of them are buried in the second cast section 182, and the other 1 / 3 of the longitudinal steel bars 16 are disconnected at the structural joint 21. The 2 / 3 longitudinal steel bars 16 passing through the structural joint 21 reduce the rigidity and strength of the structural joint structure 20, so that it can crack or deform first when the integrated pipe gallery 10 is subjected to stress.

[0053] In a specific embodiment, Figure 2 As shown, the structural joint structure 20 of the present invention further includes a grouting conduit 27 buried in the first pouring section 181, the grouting conduit 27 is arranged in an inclined shape, the bottom is located at the structural joint 21, the top extends from the surface of the first pouring section 181 located inside the integrated pipe gallery 10 to form a grouting port 271, and the grouting conduit 27 is fixedly connected to the upper steel cage 23. When cracks occur at the structural joint 21, timely repairs are carried out by setting the grouting conduit 27 to further solve the problem of water leakage.

[0054] In a specific embodiment, the structural joint structure 20 of the present invention also includes a reinforcement structure 25 formed integrally with a bottom plate cushion layer 17 arranged at the bottom plate 11 of the integrated pipe corridor 10 and a modified waterproof asphalt felt 26 laid on the bottom plate cushion layer 17. The reinforcement structure 25 is arranged at a position corresponding to the structural joint 21, and a cushion layer steel cage 251 is anchored in the reinforcement structure 25.

[0055] like Figure 1 As shown, the utility corridor 10 of the present invention comprises a bottom plate 11, a side wall 12 and a top plate 13, wherein transverse reinforcements 15 and longitudinal reinforcements 16 are arranged in the bottom plate 11, the side wall 12 and the top plate 13, wherein the transverse reinforcements 15 are arranged perpendicular to the direction of the utility corridor 10, and the longitudinal reinforcements 16 are arranged along the direction of the utility corridor 10. The side walls 12 are arranged on both sides of the bottom plate 11, and the top plate 13 is covered on the top of the side walls 12. A partition wall 14 is further arranged inside the utility corridor 10, and the internal space of the utility corridor 10 is divided by the partition wall 14 to form multiple compartments.

[0056] After the foundation pit of the integrated pipe gallery 10 is dug, the bottom plate cushion layer 17 is first constructed at the bottom, and then the bottom plate 11 is constructed on the bottom plate cushion layer 17. For the prefabricated pipe gallery, the bottom plate cushion layer 17 is also constructed first, and then the prefabricated pipe gallery segments are hoisted and fixed. Figure 2As shown, when constructing the base plate cushion layer 17, the pit bottom corresponding to the position of the structural seam 21 is excavated downward to form a strip groove, and then a cushion layer steel cage 251 is placed in the strip groove, and the width of the cushion layer steel cage 251 is greater than the distance between the two outer sides of the lower layer steel cage 22, 22' that are far away from each other. Then the base plate cushion layer is poured, and a reinforcement structure 25 is formed in the strip groove. The reinforcement structure 25 is used to strengthen the base plate to prevent small radius deflection and shear failure. A modified waterproof asphalt felt 26 is laid on the reinforcement structure 25, and the width of the modified waterproof asphalt felt 26 is consistent with the width of the cushion layer steel cage 251. The modified waterproof asphalt felt 26 is used to waterproof the base plate to prevent water leakage.

[0057] The following is a description of a construction method for a comprehensive pipe gallery structural seam structure of the present invention.

[0058] A construction method for a comprehensive pipe gallery structural seam structure of the present invention, as Figure 1 and Figure 2 As shown, the structural joint structure 20 is arranged at intervals along the longitudinal direction of the integrated pipe gallery 10, and the structural joint structure 20 is arranged in the cast-in-place structure part 18 of the integrated pipe gallery 10; the construction method includes the following steps:

[0059] The cast-in-place structure part 18 is divided into a first-casting section 181 and a second-casting section 182 according to the structural joint 21, and a template is set up according to the setting position of the first-casting section 181 to enclose a casting space of the first-casting section;

[0060] Put the lower steel cage 22 into the pouring space of the first pouring section near the structural joint 21;

[0061] Provide a water stop 24, part of which is fixed to the lower steel cage 22, and the other part is passed through the corresponding template and placed at the setting position of the post-casting section 182;

[0062] An upper steel cage 23 is placed above the lower steel cage 22;

[0063] Opening holes on the template to form through holes;

[0064] Pass part of the longitudinal steel bars 16 in the pouring space of the first pouring section through the corresponding through holes and place them at the setting position of the second pouring section 182;

[0065] pouring concrete into the pouring space of the precast section to form the precast section 181, and removing the formwork after curing; and

[0066] According to the setting position of the post-cast section, a formwork is set up to enclose the casting space of the post-cast section, and concrete is poured into the casting space of the post-cast section to form the post-cast section 182. A structural joint 21 is formed at the connection between the post-cast section 182 and the pre-cast section 181, and the post-cast section 182 anchors the other part of the water stop strip 24 and the longitudinal steel bars 16 passing through the through hole.

[0067] The integrated pipe gallery 10 of the present invention can be a cast-in-place pipe gallery or a prefabricated pipe gallery, and the prefabricated pipe gallery is connected by a cast-in-place connecting section. In a cast-in-place pipe gallery, the cast-in-place structural part 18 is the integrated pipe gallery structure. In a prefabricated pipe gallery, the cast-in-place structural part 18 is a cast-in-place connecting section.

[0068] The structural seam 21 of the present invention is not a real gap, but a joint between the first pouring section 181 and the second pouring section 182.

[0069] The present invention utilizes the water stop strip 24 to block the water permeable path connecting the inside and outside of the integrated pipe gallery 10 along the setting direction of the structural seam 21, thereby playing the role of water stopping and preventing leakage.

[0070] The structural strength of the structural joint structure 20 is improved by the upper steel cage 23 and the lower steel cage 22 arranged on the side of the structural joint 21, and the upper steel cage 23 and the lower steel cage 22 are arranged above and below the corresponding part of the water stop 24, which can also play a certain protective role on the water stop 24. While the upper steel cage 23 and the lower steel cage 22 improve the structural strength of the structural joint structure 20, the cracking degree of the structural joint 21 can be suppressed, thereby avoiding damage to the water stop 24 and protecting the waterproof effect of the water stop 24.

[0071] A certain number of longitudinal steel bars 16 are used to connect the first cast section 181 and the post cast section 182, so as to provide a certain rigidity and strength for the structural joint structure 20. However, the rigidity and strength at the structural joint 21 of the structural joint structure 20 are lower than the structural rigidity and strength of the rest of the comprehensive pipe corridor 10. Therefore, when the comprehensive pipe corridor 10 is subjected to stress changes caused by temperature difference, concrete shrinkage or uneven settlement, the structural joint 21 as a weak node may crack and deform first, thereby releasing the stress on the comprehensive pipe corridor structure and avoiding random cracks in the rest of the comprehensive pipe corridor structure, so that the crack position of the comprehensive pipe corridor is controllable, and the structural joint 21 with a certain rigidity and strength can reduce the degree of cracking, thereby ensuring the water-stopping effect and avoiding water leakage.

[0072] In a specific embodiment, before pouring concrete into the pouring space of the back pouring section, the method further includes:

[0073] Put another lower steel cage 22' in the pouring space of the post-casting section near the structural joint 21, and place the other lower steel cage 22' below the corresponding part of the water stop 24;

[0074] Another upper steel cage 23 ′ is placed above another lower steel cage 22 ′, and the other upper steel cage 23 ′ is placed above the corresponding portion of the water stop 24 .

[0075] Similarly, another lower steel cage 22' and another upper steel cage 23' can improve the structural strength of the structural joint structure 20 while suppressing the degree of cracking of the structural joint 21, thereby avoiding damage to the waterstop 24 and protecting the waterproof effect of the waterstop 24.

[0076] In a specific embodiment, combining Figure 3 As shown, the steps of passing part of the longitudinal steel bars in the casting space of the first casting section through the corresponding through holes and placing them at the setting position of the later casting section include:

[0077] Two-thirds of the longitudinal steel bars 16 in the pouring space of the first pouring section pass through the corresponding through holes and are placed at the setting position of the later pouring section 182 .

[0078] The other 1 / 3 of the longitudinal steel bars 16 in the first pouring section are disconnected at the structural joint 21. The 2 / 3 of the longitudinal steel bars 16 passing through the structural joint 21 are used to reduce the rigidity and strength of the structural joint structure 20, so that it can crack or deform first when the integrated pipe gallery 10 is subjected to stress.

[0079] In a specific embodiment, Figure 2 As shown, before pouring concrete into the pouring space of the first pouring section, the following steps are also included:

[0080] Provide a grouting conduit 27, and place the grouting conduit 27 obliquely in the pouring space of the first pouring section 181;

[0081] The bottom of the grouting conduit 27 is pressed against the template located at the structural joint 21, and the top of the grouting conduit 27 is extended from the surface of the first pouring section 181 located inside the integrated pipe gallery 10 to form a grouting port 271;

[0082] The grouting conduit 27 is fixedly connected to the upper reinforcement cage 23 .

[0083] When cracks occur at the structural joint 21, the grouting conduit 27 is provided to promptly repair the cracks, thereby further solving the problem of water leakage.

[0084] In a specific implementation manner, before the construction of the cast-in-place structure part at the bottom plate of the integrated pipe gallery, the following steps are also included:

[0085] Excavate downward at the position corresponding to the structural seam 21 on the bottom of the integrated pipe gallery 10 to form a strip groove;

[0086] Placing a cushion layer reinforcement cage 251 in the strip groove;

[0087] Constructing the bottom plate cushion layer 17 and forming a reinforcement structure 25 in the strip groove;

[0088] The modified waterproof asphalt felt 26 is laid on the bottom plate cushion layer 17 .

[0089] The reinforcement structure 25 is used to strengthen the bottom plate and prevent small radius deflection and shear failure. A modified waterproof asphalt felt 26 is laid on the reinforcement structure 25, and the width of the modified waterproof asphalt felt 26 is consistent with the width of the cushion layer steel cage 251. The modified waterproof asphalt felt 26 is used to waterproof the bottom plate and prevent water leakage from the bottom plate.

[0090] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A construction method for a structural seam structure of an integrated pipe gallery, wherein the structural seam structure is arranged at intervals along the longitudinal direction of the integrated pipe gallery, characterized in that: The structural joint structure is arranged in the cast-in-place structure part of the integrated pipe gallery; the construction method comprises the following steps: The cast-in-place structure is divided into a first-cast section and a later-cast section according to the structural joints, and formwork is set up according to the setting position of the first-cast section to enclose the casting space of the first-cast section; Putting a lower layer steel cage into the pouring space of the first pouring section near the structural joint; Providing a water stop, part of which is fixed to the lower steel cage, and the other part is passed through the corresponding formwork and placed at the setting position of the post-casting section; Placing an upper steel cage above the lower steel cage; Opening holes on the template to form through holes; Passing part of the longitudinal steel bars in the pouring space of the first pouring section through the corresponding through holes and placing them at the setting position of the later pouring section; pouring concrete into the pouring space of the pre-cast section to form the pre-cast section, and removing the formwork after curing; as well as According to the setting position of the post-casting section, a template is set up to enclose a casting space of the post-casting section, and concrete is poured into the casting space of the post-casting section to form the post-casting section, wherein the structural joint is formed at the joint between the post-casting section and the pre-casting section, and the post-casting section anchors the other part of the water stop strip and the longitudinal steel bars passing through the through hole; The step of passing part of the longitudinal steel bars in the pouring space of the first pouring section through the corresponding through holes and placing them at the setting position of the second pouring section includes: Two-thirds of the longitudinal steel bars in the pouring space of the first pouring section pass through the corresponding through holes and are placed at the setting position of the later pouring section; Before pouring concrete into the pouring space of the first pouring section, it also includes: Providing a grouting conduit, and placing the grouting conduit obliquely in the pouring space of the first pouring section; The bottom of the grouting conduit is pressed against the template located at the structural joint, and the top of the grouting conduit is extended from the surface of the first pouring section located inside the integrated pipe gallery to form a grouting port; The grouting conduit is fixedly connected to the upper steel cage; Pass 2 / 3 of the total number of longitudinal steel bars through the structural joints, that is, part of the 2 / 3 longitudinal steel bars are buried in the first pouring section and part of them are buried in the later pouring section, and the other 1 / 3 of the longitudinal steel bars are disconnected at the structural joints; the 2 / 3 longitudinal steel bars passing through the structural joints are used to reduce the stiffness and strength of the structural joint structure, so that it can crack or deform first when the integrated pipeline corridor is subjected to stress.

2. The construction method of the comprehensive pipe gallery structural joint structure according to claim 1, characterized in that: Before pouring concrete into the pouring space of the back pouring section, it also includes: Put another lower layer steel cage in the pouring space of the post-casting section near the structural joint, and place the other lower layer steel cage below the corresponding part of the water stop; Another upper steel cage is placed above the other lower steel cage, and the other upper steel cage is placed above the corresponding part of the water stop.

3. The construction method of the comprehensive pipe gallery structural joint structure according to claim 1, characterized in that: Before the construction of the cast-in-place structure at the bottom plate of the integrated pipe gallery, it also includes: Excavate downwards at the position corresponding to the structural joint on the bottom of the integrated pipe gallery to form a strip groove; Placing a cushion layer steel reinforcement cage in the strip-shaped groove; Constructing a bottom plate cushion layer and forming a reinforcement structure in the strip groove; Modified waterproof asphalt felt is laid on the base plate cushion layer.

4. A structural seam structure of an integrated pipe gallery, arranged at intervals along the longitudinal direction of the integrated pipe gallery, characterized in that: The integrated pipe gallery structural seam structure is formed by the construction method of the integrated pipe gallery structural seam structure according to any one of claims 1 to 3, the structural seam structure is arranged in the cast-in-place structural part of the integrated pipe gallery, and the cast-in-place structural part is divided into a first cast section and a later cast section by the structural seam; The structural joint structure comprises: A structural joint formed at the joint between the first pouring section and the last pouring section; A water stop strip partially buried in the first pouring section, and another portion of the water stop strip extending from the first pouring section and buried in the second pouring section; A lower steel cage and an upper steel cage embedded in the precast section, wherein the lower steel cage and the upper steel cage are disposed close to the structural joint and are located below and above corresponding portions of the water stop; and The longitudinal steel bars are embedded in the first-cast section, and part of the longitudinal steel bars extend from the first-cast section and are embedded in the second-cast section; Two-thirds of the longitudinal steel bars in the first pouring section extend from the first pouring section and are buried in the second pouring section; It also includes a grouting conduit buried in the first pouring section, the grouting conduit is arranged in an inclined shape, the bottom is located at the structural joint, the top extends from the surface of the first pouring section located inside the integrated pipe gallery to form a grouting port, and the grouting conduit is fixedly connected to the upper steel cage; Pass 2 / 3 of the total number of longitudinal steel bars through the structural joints, that is, part of the 2 / 3 longitudinal steel bars are buried in the first pouring section and part of them are buried in the later pouring section, and the other 1 / 3 of the longitudinal steel bars are disconnected at the structural joints; the 2 / 3 longitudinal steel bars passing through the structural joints are used to reduce the stiffness and strength of the structural joint structure, so that it can crack or deform first when the integrated pipeline corridor is subjected to stress.

5. The integrated pipe gallery structural joint structure according to claim 4, characterized in that: It also includes another lower steel cage and another upper steel cage buried in the post-casting section. The other lower steel cage and the other upper steel cage are arranged close to the structural joint and are located below and above the corresponding parts of the water stop belt.

6. The integrated pipe gallery structural joint structure according to claim 4, characterized in that: It also includes a reinforcement structure formed integrally with the bottom plate cushion layer arranged at the bottom plate of the integrated pipe gallery and a modified waterproof asphalt felt laid on the bottom plate cushion layer. The reinforcement structure is arranged corresponding to the position of the structural seam, and a cushion layer steel cage is anchored in the reinforcement structure.

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