Open caisson structure

Abstract

The open caisson structure comprises an open caisson body, and an avoiding hole which penetrates through one side wall and is used for pipe jacking is pre-formed in the side wall of the open caisson body; and the blocking piece is a prefabricated part, the blocking piece is detachably arranged in the receding hole, and the blocking piece is used for blocking the receding hole. During open caisson construction, the plugging piece is assembled into the avoiding hole in the corresponding side wall of the open caisson main body, and when open caisson construction is completed and pipe jacking construction needs to be carried out, the plugging piece is detached, that is, according to the open caisson structure, the avoiding hole used for pipe jacking does not need to be dug in the corresponding side wall of the open caisson main body on site; and the plugging piece can be repeatedly used, so that the construction risk is reduced, waste is reduced, and the environment is protected.

Description

Technical Field

[0001] The present application relates to the technical field of caisson construction, and in particular to a caisson structure. Background Art

[0002] Pipe jacking is an underground pipeline construction method developed after shield construction. As a trenchless construction method, compared with trenching and shield construction, pipe jacking has obvious advantages. This method does not require digging ground slots and can cross roads, railways, rivers, ground buildings, underground structures, and various underground pipelines. Among them, during pipe jacking construction, caissons, i.e. working wells, need to be set up at both ends of the underground pipelines to be laid. The working wells are divided into jacking wells and receiving wells.

[0003] With the vigorous development of urban sewage treatment, underground sewage pipes are becoming increasingly complex. Therefore, in cities, it is usually necessary to use the caisson jacking construction method to construct underground pipes. In the traditional caisson jacking construction process, it is necessary to open an avoidance hole for jacking on the side wall of the caisson after the caisson construction is completed. However, the on-site excavation of the above-mentioned avoidance hole will not only cause certain waste, but also the waste residue generated during the excavation may cause environmental pollution. In addition, there are certain construction risks in the on-site excavation operation. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a caisson structure, which is conducive to reducing construction risks, reducing waste and protecting the environment.

[0005] According to the embodiment of the present application, the caisson structure includes: a caisson body, one of the side walls of the caisson body is preset with an avoidance hole that penetrates the side wall and is used for jacking pipes; a sealing member, the sealing member is a prefabricated component, the sealing member is detachably arranged in the avoidance hole, and the sealing member is used to block the avoidance hole.

[0006] The caisson structure according to the embodiment of the present application has at least the following beneficial effects: during the caisson construction, the sealing member is assembled into the avoidance hole on the corresponding side wall of the caisson body; when the caisson construction is completed and jacking construction is required, the sealing member can be removed. That is, the caisson structure according to the embodiment of the present application not only does not require on-site avoidance holes for jacking pipes to be drilled on the corresponding side walls of the caisson body, but the sealing member can be reused, which is beneficial to reducing construction risks, and at the same time is beneficial to reducing waste and protecting the environment.

[0007] According to some embodiments of the present application, a detachable connecting component is arranged between the sealing member and the corresponding side wall of the caisson body, and the connecting component includes a connecting member and a limit block, and the limit blocks are arranged at both ends of the connecting member, one of the limit blocks is detachably connected to the corresponding side wall of the caisson body, and the other limit block is detachably connected to the sealing member.

[0008] According to some embodiments of the present application, a first limiting groove having an accommodating space larger than the volume of the limiting block is provided on the inner side of the corresponding side wall of the caisson body, and a second limiting groove having an accommodating space larger than the volume of the limiting block is provided on the end surface of the sealing member facing the inner side of the caisson body, a first mounting through hole is penetrated by the solid portion between the first limiting groove and the second limiting groove, the connecting member is movably inserted into the first mounting through hole, one end of the connecting member extends into the first limiting groove, and the other end of the connecting member extends into the second limiting groove, and second mounting through holes are provided on both the limiting blocks, one of which is provided in the first In the limiting groove, the limiting block can be slidably mounted on the part of the connecting member extending into the first limiting groove through the second mounting through hole arranged on the limiting block, and another limiting block is arranged in the second limiting groove, and the limiting block can be slidably mounted on the part of the connecting member extending into the second limiting groove through the second mounting through hole arranged on the limiting block, one end of the connecting member is threadedly connected with a first nut for limiting the corresponding limiting block from being separated from the connecting member, and the other end of the connecting member is threadedly connected with a second nut for limiting the corresponding limiting block from being separated from the connecting member or is integrally formed with a limiting portion for limiting the corresponding limiting block from being separated from the connecting member.

[0009] According to some embodiments of the present application, the connecting member is a stud, and the length of the first limiting groove or the second limiting groove is greater than or equal to the length of the connecting member; or,

[0010] The connecting member is a steel wire rope, and at least one end of the connecting member is provided with a threaded connecting portion.

[0011] According to some embodiments of the present application, the outer surface of the limit block has a first curved surface, the groove wall of the first limit groove has a second curved surface that abuts and cooperates with the first curved surface of the corresponding limit block, and the second limit groove is provided with a third curved surface that abuts and cooperates with the first curved surface of the corresponding limit block.

[0012] According to some embodiments of the present application, the caisson structure has four groups of connection components, and the four groups of connection components are distributed in a ring array.

[0013] According to some embodiments of the present application, a sealing structure is provided between the sealing member and the corresponding side wall of the caisson body.

[0014] According to some embodiments of the present application, the sealing structure includes a waterproof rubber ring coated on the outside of the sealing member, and the waterproof rubber ring is sandwiched between the sealing member and the hole wall of the avoidance hole.

[0015] According to some embodiments of the present application, the cross-section of the caisson body is circular or rectangular, and the cross-section of the avoidance hole is circular.

[0016] According to some embodiments of the present application, the inner bottom wall of the caisson body is paved with a backfill gravel layer, and a casting box bottom plate is arranged above the backfill gravel layer.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic structural diagram of a caisson structure according to an embodiment of the present application;

[0020] Figure 2 is a cross-sectional schematic diagram of a caisson structure according to an embodiment of the present application;

[0021] Figure 3 yes Figure 2 The structure shown is a schematic diagram of the structure after the blocking member and the connecting components are hidden;

[0022] Figure 4 is a cross-sectional schematic diagram of a local structure of the caisson structure of an embodiment of the present application from another perspective;

[0023] Figure 5 yes Figure 4 A partial enlarged schematic diagram in the middle;

[0024] Figure 6 It is a schematic structural diagram of a blocking member and a connecting assembly according to an embodiment of the present application.

[0025] Reference numerals:

[0026] The caisson body 100, the avoidance hole 110, the first limiting groove 120, the backfill gravel layer 130, the casting box bottom plate 140, the blocking member 200, the second limiting groove 210, the connecting member 300, the limiting block 400, the first arc-shaped surface 410, the first nut 500, the second nut 600, and the waterproof rubber ring 700. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0028] In the description of the present application, it should be understood that if orientation descriptions are involved, the orientations or positional relationships indicated, such as up, down, front, back, left, and right, are based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0029] In the description of this application, if the words "some", "greater than", "less than", "exceed", "above", "below", "within" etc. appear, "some" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number, and "above", "below", "within", etc. are understood to include the number.

[0030] In the description of this application, if the words "first", "second", etc. appear, they are only used to distinguish technical features and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0032] Pipe jacking is an underground pipeline construction method developed after shield construction. As a trenchless construction method, compared with trenching and shield construction, pipe jacking has obvious advantages. This method does not require digging ground slots and can cross roads, railways, rivers, ground buildings, underground structures, and various underground pipelines. Among them, during pipe jacking construction, caissons, i.e. working wells, need to be set up at both ends of the underground pipelines to be laid. The working wells are divided into jacking wells and receiving wells.

[0033] With the vigorous development of urban sewage treatment, underground sewage pipes are becoming increasingly complex. Therefore, it is usually necessary to adopt the construction method of caisson jacking in cities for underground pipe construction. In the traditional caisson jacking construction process, it is necessary to open an avoidance hole for jacking on the side wall of the caisson after the caisson construction is completed. However, the on-site excavation of the above-mentioned avoidance hole will not only cause certain waste, but also the waste residue generated during the excavation may cause pollution to the environment. In addition, there are certain construction risks in the on-site excavation operation. For this reason, it is urgent to optimize the traditional caisson structure to solve the above-mentioned technical problems. The optimized caisson structure of this application will be described in detail below in conjunction with the accompanying drawings.

[0034] Reference Figures 1 to 6 According to the embodiment of the present application, the caisson structure includes a caisson body 100 and a sealing member 200 .

[0035] Specifically, a avoidance hole 110 penetrating through the side wall and used for jacking pipe is preset on one of the side walls of the caisson body 100 . The blocking member 200 is a prefabricated component. The blocking member 200 is detachably arranged in the avoidance hole 110 . The blocking member 200 is used to block the avoidance hole 110 .

[0036] During the caisson construction, the sealing member 200 is assembled into the avoidance hole 110 on the corresponding side wall of the caisson body 100. When the caisson construction is completed and jacking construction is required, the sealing member 200 can be removed. That is, the caisson structure of the embodiment of the present application not only does not require on-site excavation of the avoidance hole 110 for jacking pipes on the corresponding side wall of the caisson body 100, but the sealing member 200 can be reused, which is beneficial to reducing construction risks, reducing waste and protecting the environment.

[0037] Reference Figures 4 to 6 In some embodiments, a detachable connecting component is provided between the sealing member 200 and the corresponding side wall of the caisson body 100 (i.e., the side wall with the avoidance hole 110), and the above-mentioned connecting component includes a connecting member 300 and a limit block 400, and limit blocks 400 are provided at both ends of the connecting member 300, one of the limit blocks 400 is detachably connected to the corresponding side wall of the caisson body 100, and the other limit block 400 is detachably connected to the sealing member 200, which has a simple structure and is easy to implement.

[0038] Reference Figures 2 to 6In some embodiments, a first limiting groove 120 having a storage space larger than the volume of the limiting block 400 is provided on the inner side of the corresponding side wall of the caisson body 100, and a second limiting groove 210 having a storage space larger than the volume of the limiting block 400 is provided on the end surface of the blocking member 200 facing the inner side of the caisson body 100, and a first mounting through hole (not shown in the figure) is provided through the entity portion between the first limiting groove 120 and the second limiting groove 210, that is, the first mounting through hole has a portion located on the caisson body 100 and a portion located on the blocking member 200, and the connecting member 300 is movably arranged in the first mounting through hole, one end of the connecting member 300 extends into the first limiting groove 120, and the other end of the connecting member 300 extends into the second limiting groove 210, and the two limiting blocks 400 are provided with a second installation through hole (not shown in the figure), one of the limit blocks 400 is arranged in the first limit groove 120, and the limit block 400 is slidably mounted on the portion of the connecting member 300 extending into the first limit groove 120 through the second installation through hole arranged thereon, and the other limit block 400 is arranged in the second limit groove 210, and the limit block 400 is slidably mounted on the portion of the connecting member 300 extending into the second limit groove 210 through the second installation through hole arranged thereon, and one end of the connecting member 300 is threadedly connected with a first nut 500 for limiting the corresponding limit block 400 from being separated from the connecting member 300, and the other end of the connecting member 300 is threadedly connected with a second nut 600 for limiting the corresponding limit block 400 from being separated from the connecting member 300. The above structure is conducive to ensuring the flatness of the inner side of the corresponding side wall of the caisson body 100, and is also conducive to protecting the above connection components during the caisson construction process.

[0039] It should be noted that, in some other embodiments, the second nut 600 may also be replaced by an integrally formed limiting portion for limiting the corresponding limiting block 400 from being separated from the connecting member 300, which is not limited here.

[0040] Reference Figures 4 to 6 In some embodiments, the connecting member 300 is a stud, that is, the connecting member 300 is a rigid structure, which is conducive to ensuring the stability and reliability of the connection relationship between the sealing member 200 and the caisson body 100, wherein the length of the first limiting groove 120 or the second limiting groove 210 is greater than or equal to the length of the connecting member 300, so as to facilitate the installation and disassembly of the connecting member 300.

[0041] It should be noted that, in some other embodiments, the connector 300 is a steel wire rope, that is, the connector 300 is a flexible structure, so that when the lengths of the first limiting groove 120 and the second limiting groove 210 are both less than the length of the connector 300, the installation and removal of the connector 300 are still not affected, wherein at least one end of the connector 300 is provided with a threaded connection portion. Specifically, when the two ends of the connector 300 need to be threadedly connected to the first nut 500 and the second nut 600 respectively, both ends of the connector 300 are provided with a threaded connection portion, and when the connector 300 only needs to be threadedly connected to the first nut 500 at one end (the other end is integrally formed with a limiting portion), only one end of the connector 300 (the end that needs to be threadedly connected to the first nut 500) is provided with a threaded connection portion, which is not limited here.

[0042] It should be noted that the above-mentioned length refers to the dimension along the axial direction of the connecting member 300 .

[0043] Reference Figure 6 In some embodiments, the outer surface of the stop block 400 has a first arcuate surface 410, the groove wall of the first stop groove 120 has a second arcuate surface (not shown in the figure) that abuts and matches with the first arcuate surface 410 of the corresponding stop block 400, and the second stop groove 210 is provided with a third arcuate surface (not shown in the figure) that abuts and matches with the first arcuate surface 410 of the corresponding stop block 400. Through the above structure, the connection assembly is not easily damaged due to stress concentration.

[0044] It should be noted that, in some other embodiments, the limit blocks 400 can also be fixedly connected or integrally formed with the connecting member 300. Correspondingly, the limit blocks 400 at both ends of the connecting member 300 are respectively fixed to the inner side of the corresponding side wall of the caisson body 100 and the corresponding end face of the sealing member 200 by bolts, which is not limited here.

[0045] Reference Figure 2 and Figure 6 In some of the embodiments, the caisson structure has four groups of the above-mentioned connecting components, and the four groups of connecting components are distributed in a ring array, which is conducive to ensuring the stability and reliability of the connection relationship between the sealing member 200 and the caisson body 100.

[0046] It should be noted that, in some of the embodiments, a sealing structure is provided between the blocking member 200 and the corresponding side wall of the caisson body 100, which is helpful to ensure the sealing of the avoidance hole 110 during the caisson construction.

[0047] Reference Figure 6In some embodiments, the sealing structure includes a waterproof rubber ring 700 wrapped around the sealing member 200, and the waterproof rubber ring 700 is sandwiched between the sealing member 200 and the hole wall of the avoidance hole 110. The structure is simple and easy to implement.

[0048] It should be noted that, in some other embodiments, the sealing structure may also be a sealant filled between the blocking member 200 and the hole wall of the avoidance hole 110, which is not limited here.

[0049] Reference Figure 1 and Figure 3 In some embodiments, the cross-section of the caisson body 100 is rectangular, and the cross-section of the avoidance hole 110 is circular.

[0050] It should be noted that, in some other embodiments, the cross-section of the caisson body 100 may also be circular, which is not limited here.

[0051] Reference Figure 3 and Figure 4 In some embodiments, the inner bottom wall of the caisson body 100 is paved with a backfill gravel layer 130, and a casting box bottom plate 140 is arranged above the backfill gravel layer 130. On the one hand, it is helpful to prevent groundwater or harmful substances from leaking into the caisson body 100 to ensure the safety of the workers, thereby helping to prevent accidents; on the other hand, it is helpful to prevent groundwater from being polluted during the construction process to protect groundwater resources.

[0052] In the description of this specification, if the description involves reference terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" and "some examples", it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0053] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A caisson structure, characterized in that: include: A caisson body, wherein one of the side walls of the caisson body is provided with a avoidance hole penetrating the side wall and used for jacking pipes; A blocking member, which is a prefabricated member and is detachably disposed in the avoidance hole, and is used to block the avoidance hole; A detachable connecting component is arranged between the sealing member and the corresponding side wall of the caisson body, and the connecting component includes a connecting member and a limit block. The limit blocks are arranged at both ends of the connecting member, one of the limit blocks is detachably connected to the corresponding side wall of the caisson body, and the other limit block is detachably connected to the sealing member.

2. The caisson structure according to claim 1, characterized in that: The inner side of the corresponding side wall of the caisson body is provided with a first limiting groove whose accommodating space is larger than the volume of the limiting block, and the end surface of the blocking member facing the inner side of the caisson body is provided with a second limiting groove whose accommodating space is larger than the volume of the limiting block, and the solid part between the first limiting groove and the second limiting groove is penetrated by a first mounting through hole, and the connecting member is movably inserted into the first mounting through hole, one end of the connecting member extends into the first limiting groove, and the other end of the connecting member extends into the second limiting groove, and the two limiting blocks are provided with a second mounting through hole, one of the limiting blocks is arranged in the first limiting groove, and the The limit block can be slidably mounted on the part of the connecting member extending into the first limit groove through the second mounting through hole provided on the limit block, and another limit block is provided in the second limit groove. The limit block can be slidably mounted on the part of the connecting member extending into the second limit groove through the second mounting through hole provided on the limit block, one end of the connecting member is threadedly connected with a first nut for limiting the corresponding limit block from detaching from the connecting member, and the other end of the connecting member is threadedly connected with a second nut for limiting the corresponding limit block from detaching from the connecting member or is integrally formed with a limit portion for limiting the corresponding limit block from detaching from the connecting member.

3. The caisson structure according to claim 2, characterized in that: The connecting member is a stud, and the length of the first limiting groove or the second limiting groove is greater than or equal to the length of the connecting member; or The connecting member is a steel wire rope, and at least one end of the connecting member is provided with a threaded connecting portion.

4. The caisson structure according to claim 2, characterized in that: The outer surface of the limit block has a first arcuate surface, the groove wall of the first limit groove has a second arcuate surface that abuts and cooperates with the first arcuate surface of the corresponding limit block, and the second limit groove is provided with a third arcuate surface that abuts and cooperates with the first arcuate surface of the corresponding limit block.

5. The caisson structure according to claim 1, characterized in that: The caisson structure has four groups of connection components, and the four groups of connection components are distributed in a ring array.

6. The caisson structure according to claim 1, characterized in that: A sealing structure is provided between the blocking member and the corresponding side wall of the caisson body.

7. The caisson structure according to claim 6, characterized in that: The sealing structure comprises a waterproof rubber ring wrapped around the sealing member, and the waterproof rubber ring is sandwiched between the sealing member and the hole wall of the avoidance hole.

8. The caisson structure according to claim 1, characterized in that: The cross section of the caisson body is circular or rectangular, and the cross section of the avoidance hole is circular.

9. The caisson structure according to claim 1, characterized in that: The inner bottom wall of the caisson body is paved with a backfilled sand and gravel layer, and a casting box bottom plate is arranged above the backfilled sand and gravel layer.

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