Basement structure and construction method using high ductility concrete strips instead of expansion joints

Abstract

The present invention discloses a basement structure and construction method using a high-ductility concrete belt to replace an expansion joint, aiming to provide a basement structure and construction method that can effectively solve the problem of cracks between the underground gallery and the basement structure due to uneven shrinkage; and can effectively solve the hidden danger of water seepage in the later stage of the building due to the use of expansion joints in the prior art, as well as the basement structure and construction method that cause water ingress to the basement and underground gallery during the construction of the basement structure and the underground gallery structure. The basement structure construction method includes pouring a basement floor, the basement floor includes a basement floor of one of the two basements and a gallery raft, and the basement floor and the gallery raft are connected as one; pouring a top plate, the top plate includes a basement top plate of one of the two basements and a gallery top plate, and the basement floor and the gallery top plate are connected as one.

Description

Technical Field

[0001] The invention relates to the field of underground structure construction, and in particular to a basement structure using high-ductility concrete belts instead of expansion joints and a construction method. Background Art

[0002] In recent years, in order to improve the quality of underground transportation and the use function of buildings, underground corridors are generally used to connect the basements of adjacent plots. Since the plane stiffness of the basement is much greater than the plane stiffness of the underground corridor, cracks are prone to appear in the basement and underground corridor at the parts where the stiffness and plane size change suddenly due to uneven shrinkage. The conventional method of the current project is to set an expansion joint (i.e., expansion post-casting strip) between the underground corridor and the basement structure to solve the problem of cracks caused by uneven shrinkage. In today's concrete engineering, expansion joint technology has become mature, but it has the following problems. Since the expansion joint needs to be poured with concrete after the construction of the basement structure and the underground gallery structure is completed, so that the basement structure and the underground gallery structure are connected as one, during the construction of the basement structure and the underground gallery structure, rainwater will leak into the basement and the underground gallery through the expansion joint, affecting the subsequent processes of the basement and the underground gallery; on the other hand, if the expansion joint is not poured for a long time, it will be filled with various construction wastes, resulting in the need to clean the expansion joint in advance before pouring the expansion joint, which is not only inconvenient to operate, but also once the expansion joint is not cleaned, it may also cause the expansion joint formed by pouring to be loose, and there is a risk of water seepage, which leads to the problem of water seepage in the later stage of the building. Summary of the invention

[0003] The purpose of the present invention is to provide a basement structure and construction method using high-ductility concrete strips instead of expansion joints, which can effectively solve the problem of cracks between underground corridors and basement structures due to uneven shrinkage; it can also effectively solve the potential water seepage problems that may exist in the later stage of buildings when expansion joints are used in the prior art, as well as the problem of water intrusion into the basement and underground corridor during the construction of the basement structure and underground corridor structure, which affects the subsequent construction processes of the basement and underground corridor.

[0004] The technical solution of the present invention is:

[0005] A basement structure construction method using a high-ductility concrete belt to replace an expansion joint, the basement structure includes two basements and an underground corridor connecting the two basements, and the basement structure construction method using a high-ductility concrete belt to replace an expansion joint includes the following steps:

[0006] Casting the bottom slab, the bottom slab includes the basement bottom slab of one of the two basements and the gallery raft slab, the basement bottom slab and the gallery raft slab are connected as one, and the construction of casting the bottom slab includes the following steps:

[0007] A1, two raft construction joints are set at the corridor raft, one of which is close to one end of the underground corridor, and the other is close to the other end of the underground corridor. The two raft construction joints divide the corridor raft into three parts;

[0008] A2, using ordinary concrete to cast the basement floor of one of the two basements;

[0009] Ordinary concrete is used to cast the part of the gallery raft between one of the basements and the raft construction joint adjacent to the basement;

[0010] Ordinary concrete is used to cast the part of the gallery raft between the other basement and the raft construction joint adjacent to the basement;

[0011] Ordinary concrete is used to cast the corridor raft slab between the two raft slab construction joints;

[0012] Before the ordinary concrete of the basement floor and the ordinary concrete of the corridor raft slab harden, high-ductility concrete is poured in the construction joints of the two raft slabs to form a high-ductility concrete raft slab expansion band, and the corridor raft slabs of various parts are connected together through the high-ductility concrete raft slab expansion band.

[0013] The construction method of a basement structure using a high-ductility concrete belt to replace an expansion joint also includes the following steps: pouring a top plate, the top plate includes a basement top plate of a layer of two basements and a gallery top plate, the basement bottom plate and the gallery top plate are connected as a whole, and the construction of pouring the top plate includes the following steps:

[0014] B1, two top plate construction joints are set at the top plate of the corridor, one of which is close to one end of the underground corridor, and the other is close to the other end of the underground corridor. The two top plate construction joints divide the corridor top plate into three parts;

[0015] B2, using ordinary concrete to cast the top slab of one of the two basements;

[0016] The portion of the gallery top slab between one of the basements and the top slab construction joint adjacent to the basement is cast with ordinary concrete;

[0017] Ordinary concrete is used to cast the portion of the gallery top slab between the other basement and the top slab construction joint adjacent to the basement;

[0018] Ordinary concrete is used to cast the part of the gallery top slab between the two top slab construction joints;

[0019] Before the ordinary concrete of the basement top slab and the ordinary concrete of the corridor top slab harden, high-ductility concrete is poured in the construction joints of the two top slabs to form a high-ductility concrete top slab expansion belt, and the corridor top slabs of various parts are connected together through the high-ductility concrete top slab expansion belt.

[0020] This solution utilizes the high-ductility concrete's high strength, high toughness, high crack resistance and high damage resistance compared to ordinary concrete, especially its tensile properties can reach 50-200 times that of ordinary concrete, and adopts the high-ductility concrete raft expansion strip and high-ductility concrete top plate expansion strip formed by high-ductility concrete to replace the expansion joint (i.e., expansion post-cast strip) in the prior art, so that in the construction of pouring the basement, the construction interval between the basement basement, the corridor raft and the high-ductility concrete raft expansion strip of a certain layer in the basement is very short, and the high-ductility concrete can be constructed before the ordinary concrete of the basement basement and the corridor raft hardens. Earth raft expansion belt, connects the corridor rafts of each part into one through high ductility concrete raft expansion belt; similarly, in the construction of the top plate, before the ordinary concrete of the basement top plate and the corridor top plate hardens, the high ductility concrete top plate expansion belt can be constructed, and the corridor top plates of each part can be connected into one through the high ductility concrete top plate expansion belt; thereby effectively solving the problem of water seepage hidden dangers in the later stage of the high-rise building constructed with expansion joints in the prior art, and the problem of water inflow into the basement and underground corridor during the construction of the basement structure and underground corridor structure, which affects the subsequent construction of the basement and underground corridor. At the same time, the deformation caused by uneven concrete shrinkage between the underground corridor and the basement structure appears at the high ductility concrete raft expansion belt and the high ductility concrete top plate expansion belt, thereby effectively solving the problem of cracks between the underground corridor and the basement structure due to uneven shrinkage.

[0021] Preferably, the top plate construction joint is composed of two steel wire meshes distributed along the length direction of the underground corridor. In this way, before high-ductility concrete is poured into the top plate construction joint using high-ductility concrete, the steel wire mesh does not need to be removed, and high-ductility concrete can be poured directly to form a high-ductility concrete top plate expansion belt (the steel wire mesh can be directly buried in the high-ductility concrete), thereby facilitating actual construction operations.

[0022] Preferably, the thickness of the high ductility concrete top plate expansion band is less than the thickness of the gallery top plate. If the thickness of the high ductility concrete top plate expansion band is too large, it will not only increase the high ductility concrete material, but also be unfavorable for the deformation caused by uneven concrete shrinkage between the underground gallery and the basement structure to appear within the high ductility concrete top plate expansion band.

[0023] Preferably, the difference between the thickness of the high-ductility concrete top plate expansion band and the thickness of the gallery top plate is 100-200 mm. The thickness of the high-ductility concrete top plate expansion band of the present solution can ensure the stability of the overall structure, so that the deformation caused by uneven concrete shrinkage between the underground gallery and the basement structure appears within the high-ductility concrete top plate expansion band.

[0024] Preferably, a steel mesh is embedded in the corridor roof and passes through two roof construction joints.

[0025] Preferably, the raft construction joint is composed of two steel wire meshes distributed along the length direction of the underground gallery. In this way, before high-ductility concrete is poured into the raft construction joint using high-ductility concrete, the steel wire mesh does not need to be removed, and the high-ductility concrete can be directly poured to form a high-ductility concrete raft expansion belt (the steel wire mesh can be directly buried in the high-ductility concrete), thereby facilitating the actual construction operation.

[0026] Preferably, the thickness of the high ductility concrete raft expansion zone is less than the thickness of the gallery raft. If the thickness of the high ductility concrete raft expansion zone is too large, it will not only increase the high ductility concrete material, but also make it difficult for the deformation caused by the uneven concrete shrinkage between the underground gallery and the basement structure to appear in the high ductility concrete raft expansion zone.

[0027] Preferably, the difference between the thickness of the high-ductility concrete raft expansion band and the thickness of the gallery raft is 100-200 mm. The thickness of the high-ductility concrete raft expansion band of the present solution can ensure the stability of the overall structure, so that the deformation caused by uneven concrete shrinkage between the underground gallery and the basement structure appears within the high-ductility concrete raft expansion band.

[0028] Preferably, a steel mesh is embedded in the corridor raft slab, and the steel mesh passes through two raft slab construction joints.

[0029] A basement structure using a high-ductility concrete belt to replace an expansion joint comprises two basements and an underground gallery connecting the two basements, the underground gallery comprises a gallery raft and a gallery top plate, the gallery raft connects the basement rafts of the two basements, the gallery top plate connects the basement bottom top plates of the two basements, the basement rafts, the gallery raft, the basement bottom top plates and the gallery top plate are all cast with ordinary concrete, two raft construction joints are arranged on the gallery raft, one raft construction joint is close to one end of the underground gallery, the other raft construction joint is close to the other end of the underground gallery, the two raft construction joints divide the gallery raft into three parts, the gallery rafts of the three parts are sequentially distributed along the length direction of the underground gallery, high-ductility concrete raft expansion belts are arranged in the two raft construction joints, and the gallery rafts of each part are connected as a whole by the high-ductility concrete raft expansion belts;

[0030] Two roof construction joints are arranged on the corridor roof, one of which is close to one end of the underground corridor, and the other is close to the other end of the underground corridor. The two roof construction joints divide the corridor roof into three parts. The three parts of the corridor roof are distributed in sequence along the length direction of the underground corridor. High-ductility concrete roof expansion belts are provided in the two roof construction joints, and the corridor roofs of each part are connected as a whole through the high-ductility concrete roof expansion belts.

[0031] The beneficial effects of the present invention are: it can effectively solve the problem of cracks between the underground corridor and the basement structure due to uneven shrinkage; it can also effectively solve the potential water seepage problem that may exist in the later stage of the building when expansion joints are used in the prior art, as well as the problem of water intrusion into the basement and underground corridor during the construction of the basement structure and the underground corridor structure, which affects the subsequent construction process of the basement and the underground corridor. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a cross-sectional structural schematic diagram of a basement structure and a main building of a specific embodiment 1 of the present invention.

[0033] Figure 2 yes Figure 1 Top view of the .

[0034] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0035] Figure 4 yes Figure 3 A schematic diagram of a local cross-sectional structure at BB in the middle.

[0036] Figure 5 It is a schematic diagram of a partial cross-sectional structure of a second specific embodiment of the present invention.

[0037] In the figure:

[0038] Basement 1, basement floor 1.1, basement ceiling 1.2;

[0039] Underground gallery 2, gallery raft 2.1, gallery top slab 2.2;

[0040] High ductility concrete raft expansion strip 3;

[0041] High ductility concrete top plate expansion strip 4;

[0042] Corridor beam 5, end beam 5.1, high ductility concrete connecting beam 5.2, corridor main beam 5.3. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the technical solution embodiment of the present invention clearer, the technical solution of the embodiment of the present invention is clearly explained and illustrated in conjunction with the accompanying drawings below, but the following embodiments are only preferred embodiments of the present invention, rather than all embodiments. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without making creative work are all within the scope of protection of the present invention.

[0044] The embodiments of the present invention 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 solution, and cannot be interpreted as limiting the solution of the present invention.

[0045] These and other aspects of the embodiments of the present invention will become clear with reference to the following description and drawings. In these descriptions and drawings, some specific implementations of the embodiments of the present invention are specifically disclosed to represent some ways of implementing the principles of the embodiments of the present invention, but it should be understood that the scope of the embodiments of the present invention is not limited thereto. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0046] In the description of the present invention, it should be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined, and "several" means one or more.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Specific embodiment 1: Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a construction method of a basement structure using high-ductility concrete belts instead of expansion joints, the basement structure includes two basements 1 and an underground corridor 2 connecting the two basements.

[0049] The method for constructing a basement structure using high ductility concrete strips instead of expansion joints comprises the following steps:

[0050] Casting the bottom plate, the bottom plate includes the corridor raft plate 2.1 and the basement bottom plate 1.1 of one layer of the two basements, the basement bottom plate is connected with the corridor raft plate as a whole, and the construction of casting the bottom plate includes the following steps:

[0051] A1, two raft construction joints are set at the corridor raft, one of which is close to one end of the underground corridor, and the other is close to the other end of the underground corridor. The two raft construction joints divide the corridor raft into three parts, and the three parts of the corridor raft are distributed in sequence along the length direction of the underground corridor.

[0052] A2, ordinary concrete is used to cast the basement floor 1.1 of one layer of the two basements. Ordinary concrete is used to cast the part of the corridor raft slab 2.1 between one basement and the raft slab construction joint near the basement. Ordinary concrete is used to cast the part of the corridor raft slab 2.1 between the other basement and the raft slab construction joint near the basement. Ordinary concrete is used to cast the part of the corridor raft slab 2.1 between the two raft slab construction joints. Before the ordinary concrete of the basement floor and the ordinary concrete of the corridor raft slab harden, high-ductility concrete is cast in the two raft slab construction joints to form two high-ductility concrete raft slab expansion bands 3, and the corridor raft slabs of each part are connected as a whole through the two high-ductility concrete raft slab expansion bands.

[0053] Casting the top plate, the top plate includes the gallery top plate 2.2 and the basement top plate 1.2 of one of the two basements, the basement bottom plate is connected with the gallery top plate as a whole, and the construction of casting the top plate includes the following steps:

[0054] B1, two top plate construction joints are set on the corridor top plate, one of which is close to one end of the underground corridor, and the other is close to the other end of the underground corridor. The two top plate construction joints divide the corridor top plate into three parts, and the three parts of the corridor top plates are distributed in sequence along the length direction of the underground corridor.

[0055] B2, ordinary concrete is used to cast the basement top slab 1.2 of one of the two basements. Ordinary concrete is used to cast the part of the gallery top slab 2.2 between one of the basements and the top slab construction joint near the basement. Ordinary concrete is used to cast the part of the gallery top slab 2.2 between the other basement and the top slab construction joint near the basement. Ordinary concrete is used to cast the part of the gallery top slab 2.2 between the two top slab construction joints. Before the ordinary concrete of the basement top slab and the ordinary concrete of the gallery top slab harden, high-ductility concrete is cast in the two top slab construction joints to form two high-ductility concrete top slab expansion bands 4, and the gallery top slabs of each part are connected as one by the two high-ductility concrete top slab expansion bands.

[0056] like Figure 1 As shown, in this embodiment, one of the two basements refers to the bottom floor of the basement, wherein the basement floor is the basement raft slab, and the basement top is the top floor of the basement bottom floor. Of course, one of the two basements can also be the second bottom floor or top floor of a multi-layer basement.

[0057] In this embodiment, high ductility concrete has high strength, high toughness, high crack resistance and high damage resistance compared with ordinary concrete, especially its tensile performance can reach 50-200 times that of ordinary concrete. High ductility concrete raft expansion strip and high ductility concrete top plate expansion strip formed by high ductility concrete are used to replace the expansion joint (i.e., expansion post-cast strip) in the prior art, so that in the construction of pouring the basement, the construction interval between the basement basement, the corridor raft and the high ductility concrete raft expansion strip of a certain layer in the basement is very short, and the high ductility concrete can be constructed before the ordinary concrete of the basement basement and the corridor raft hardens. Concrete raft expansion belt, through the high ductility concrete raft expansion belt to connect the corridor rafts of various parts; similarly, in the construction of the top plate, before the ordinary concrete of the basement top plate and the corridor top plate hardens, the high ductility concrete top plate expansion belt can be constructed, and the corridor top plates of various parts can be connected as a whole through the high ductility concrete top plate expansion belt; thereby effectively solving the problem of water seepage in the later stage of the high-rise building constructed by expansion joints in the prior art, and the problem of water inflow into the basement and underground corridor during the construction of the basement structure and underground corridor structure, which affects the subsequent construction of the basement and underground corridor. At the same time, the deformation caused by uneven concrete shrinkage between the underground corridor and the basement structure appears at the high ductility concrete raft expansion belt and the high ductility concrete top plate expansion belt, thereby effectively solving the problem of cracks between the underground corridor and the basement structure due to uneven shrinkage.

[0058] In this embodiment, a steel mesh is embedded in the corridor raft slab, and the steel mesh passes through two raft slab construction joints. A steel mesh is embedded in the corridor top slab, and the steel mesh passes through two top slab construction joints.

[0059] Furthermore, the top plate construction joint is composed of two steel wire meshes distributed along the length direction of the underground corridor. In this way, before high-ductility concrete is poured into the top plate construction joint using high-ductility concrete, there is no need to remove the steel wire mesh, and high-ductility concrete can be poured directly to form a high-ductility concrete top plate expansion belt (the steel wire mesh can be directly buried in the high-ductility concrete), thereby facilitating actual construction operations.

[0060] Furthermore, the raft construction joint is composed of two steel wire meshes distributed along the length direction of the underground corridor. In this way, before high-ductility concrete is poured into the raft construction joint using high-ductility concrete, the steel wire mesh can be directly poured to form a high-ductility concrete raft expansion belt (the steel wire mesh can be directly buried in the high-ductility concrete), thereby facilitating the actual construction operation.

[0061] Further, such as Figure 4 As shown, the thickness of the telescopic band of the high ductility concrete top plate is less than the thickness of the corridor top plate. In this embodiment, the difference between the thickness of the telescopic band of the high ductility concrete top plate and the thickness of the corridor top plate is 100-200 mm. If the thickness of the telescopic band of the high ductility concrete top plate is too large, it will not only increase the high ductility concrete material, but also be unfavorable for the deformation caused by uneven concrete shrinkage between the underground corridor and the basement structure to appear in the telescopic band of the high ductility concrete top plate. The difference between the thickness of the telescopic band of the high ductility concrete top plate of this embodiment and the thickness of the corridor top plate is 100-200 mm, which can ensure the stability of the overall structure while making the deformation caused by uneven concrete shrinkage between the underground corridor and the basement structure appear in the telescopic band of the high ductility concrete top plate.

[0062] Further, such as Figure 4 As shown, the thickness of the high ductility concrete raft expansion band is less than the thickness of the corridor raft. In this embodiment, the difference between the thickness of the high ductility concrete raft expansion band and the thickness of the corridor raft is 100-200 mm. The excessive thickness of the high ductility concrete raft expansion band will not only increase the high ductility concrete material, but also be unfavorable for the deformation caused by uneven concrete shrinkage between the underground corridor and the basement structure to appear in the high ductility concrete raft expansion band. The difference between the thickness of the high ductility concrete raft expansion band of the present embodiment and the thickness of the corridor raft is 100-200 mm, which can ensure the stability of the overall structure while making the deformation caused by uneven concrete shrinkage between the underground corridor and the basement structure appear in the high ductility concrete raft expansion band.

[0063] Specific embodiment 2: The construction method of the basement structure using high ductility concrete belts instead of expansion joints in this embodiment refers to the specific embodiment 1, the difference being that:

[0064] like Figure 5 As shown, a plurality of corridor beams 5 for supporting the corridor roof are provided below the corridor roof, and the corridor beams extend along the length direction of the underground corridor. The corridor beams intersect with two high-ductility concrete roof expansion belts. The corridor beams include end beams 5.1, high-ductility concrete connecting beams 5.2, corridor main beams 5.3, high-ductility concrete connecting beams and end beams, which are sequentially distributed along the length direction of the underground corridor. The high-ductility concrete connecting beams connect the end beams and the corridor main beams. Both the end beams and the corridor main beams are formed by casting ordinary concrete. The high-ductility concrete connecting beams are formed by casting high-ductility concrete. The high-ductility concrete connecting beams form a pair with the high-ductility concrete roof expansion belts, and the high-ductility concrete connecting beams are located below the corresponding high-ductility concrete roof expansion belts, and the high-ductility concrete connecting beams are located at the corresponding high-ductility concrete roof expansion belts and are connected as a whole. In this way, on the one hand, the stability of the corridor top plate can be guaranteed, and on the other hand, the deformation caused by uneven concrete shrinkage between the underground corridor and the basement structure can be avoided from being transmitted "through the corridor beam" to the corridor top plate outside the expansion zone of the high-ductility concrete top plate, thereby further ensuring that the deformation caused by uneven concrete shrinkage between the underground corridor and the basement structure appears within the expansion zone of the high-ductility concrete raft slab.

[0065] In this embodiment, the end beams and the corridor main beams are cast and formed simultaneously during the process of casting the corridor roof in step B2 of the first embodiment.

[0066] In step B2 of the first embodiment, when pouring the high-ductility concrete top plate expansion belt, a reserved hole is preset at a position corresponding to the high-ductility concrete connecting beam on the high-ductility concrete top plate expansion belt, and the reserved hole penetrates the upper and lower surfaces of the ring-shaped high-ductility concrete top plate expansion belt. After the main structure of the basement and underground corridor is completed, a template is set at the position of the high-ductility concrete connecting beam below the ring-shaped high-ductility concrete top plate belt to form a pouring cavity, and then high-ductility concrete is poured into the pouring cavity through the reserved hole to form a high-ductility concrete connecting beam.

[0067] In this way, during the construction of the main structures of the basement and underground corridor, the stability of the corridor roof can be ensured by the corridor main beams, and the deformation caused by uneven concrete shrinkage between the underground corridor and the basement structure can be further avoided from being transmitted "through the corridor beams" to the corridor roof outside the expansion zone of the high-ductility concrete roof, thereby further ensuring that the deformation caused by uneven concrete shrinkage between the underground corridor and the basement structure appears within the expansion zone of the high-ductility concrete raft slab.

[0068] Specific embodiment 3: A basement structure using a high ductility concrete belt to replace an expansion joint includes two basements and an underground gallery connecting the two basements. The underground gallery includes a gallery raft and a gallery top plate. The gallery raft connects the basement rafts of the two basements, and the gallery top plate connects the basement bottom top plates of the two basements. The basement raft, gallery raft, basement bottom top plate and gallery top plate are all cast with ordinary concrete.

[0069] There are two raft construction joints on the corridor raft, one of which is close to one end of the underground corridor, and the other is close to the other end of the underground corridor. The two raft construction joints divide the corridor raft into three parts. The three parts of the corridor raft are distributed in sequence along the length of the underground corridor. High-ductility concrete raft expansion belts are provided in the two raft construction joints, and the corridor rafts of each part are connected together through the high-ductility concrete raft expansion belts.

[0070] There are two top plate construction joints on the corridor top plate, one of which is close to one end of the underground corridor, and the other is close to the other end of the underground corridor. The two top plate construction joints divide the corridor top plate into three parts. The three parts of the corridor top plates are distributed in sequence along the length direction of the underground corridor. High-ductility concrete top plate expansion belts are provided in the two top plate construction joints, and the corridor top plates of each part are connected as a whole through the high-ductility concrete top plate expansion belts.

[0071] The thickness of the high ductility concrete raft expansion band is less than the thickness of the corridor raft. In this embodiment, the difference between the thickness of the high ductility concrete raft expansion band and the thickness of the corridor raft is 100-200 mm.

[0072] The thickness of the high ductility concrete top plate expansion band is less than the thickness of the gallery top plate. In this embodiment, the difference between the thickness of the high ductility concrete top plate expansion band and the thickness of the gallery top plate is 100-200 mm.

[0073] In addition, the basement structure and construction method of the present invention using high-ductility concrete strips instead of expansion joints are also applicable to other projects where the plane length exceeds the set value, such as a plane length exceeding 60 meters, and temperature expansion joints need to be set.

[0074] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A method for constructing a basement structure using a high-ductility concrete belt instead of an expansion joint, wherein the basement structure comprises two basements and an underground gallery connecting the two basements, wherein: The method for construction of a basement structure using high ductility concrete strips instead of expansion joints comprises the following steps, Casting the bottom slab, the bottom slab includes the basement bottom slab of one of the two basements and the gallery raft slab, the basement bottom slab and the gallery raft slab are connected as one, and the construction of casting the bottom slab includes the following steps: A1, two raft construction joints are set at the corridor raft, one of which is close to one end of the underground corridor, and the other is close to the other end of the underground corridor. The two raft construction joints divide the corridor raft into three parts; A2, using ordinary concrete to cast the basement floor of one of the two basements; Ordinary concrete is used to cast the part of the gallery raft between one of the basements and the raft construction joint adjacent to the basement; Ordinary concrete is used to cast the part of the gallery raft between the other basement and the raft construction joint adjacent to the basement; Ordinary concrete is used to cast the corridor raft slab between the two raft slab construction joints; Before the ordinary concrete of the basement floor and the ordinary concrete of the corridor raft slab harden, high-ductility concrete is poured in the construction joints of the two raft slabs to form a high-ductility concrete raft slab expansion band, and the corridor raft slabs of various parts are connected together through the high-ductility concrete raft slab expansion band.

2. The method for constructing a basement structure using high ductility concrete strips instead of expansion joints according to claim 1, characterized in that: The method further includes the following steps: pouring a top plate, wherein the top plate includes a basement top plate of a certain layer of the two basements and a gallery top plate, wherein the basement bottom plate is connected to the gallery top plate as a whole, and the construction of pouring the top plate includes the following steps: B1, two top plate construction joints are set at the top plate of the corridor, one of which is close to one end of the underground corridor, and the other is close to the other end of the underground corridor. The two top plate construction joints divide the corridor top plate into three parts; B2, using ordinary concrete to cast the top slab of one of the two basements; The portion of the gallery top slab between one of the basements and the top slab construction joint adjacent to the basement is cast with ordinary concrete; Ordinary concrete is used to cast the portion of the gallery top slab between the other basement and the top slab construction joint adjacent to the basement; Ordinary concrete is used to cast the part of the gallery top slab between the two top slab construction joints; Before the ordinary concrete of the basement top slab and the ordinary concrete of the corridor top slab harden, high-ductility concrete is poured in the construction joints of the two top slabs to form a high-ductility concrete top slab expansion belt, and the corridor top slabs of various parts are connected together through the high-ductility concrete top slab expansion belt.

3. The construction method of basement structure using high ductility concrete strips instead of expansion joints according to claim 2 is characterized in that: The top plate construction joint is composed of two steel wire meshes.

4. The method for constructing a basement structure using high ductility concrete strips instead of expansion joints according to claim 2 or 3, characterized in that: The thickness of the high-ductility concrete top plate expansion zone is less than the thickness of the corridor top plate.

5. The construction method of basement structure using high ductility concrete strips instead of expansion joints according to claim 4 is characterized in that: The difference between the thickness of the high-ductility concrete top plate expansion zone and the thickness of the corridor top plate is 100-200 mm.

6. The method for constructing a basement structure using high ductility concrete strips instead of expansion joints according to claim 2 or 3, characterized in that: A steel mesh is embedded in the corridor roof and passes through two roof construction joints.

7. The method for constructing a basement structure using high ductility concrete strips instead of expansion joints according to claim 1, 2 or 3, characterized in that: The raft construction joint is composed of two steel wire meshes.

8. The method for constructing a basement structure using high ductility concrete strips instead of expansion joints according to claim 1, 2 or 3, characterized in that: The thickness of the high-ductility concrete raft expansion zone is less than the thickness of the corridor raft.

9. The method for constructing a basement structure using high ductility concrete strips instead of expansion joints according to claim 1, 2 or 3, characterized in that: The difference between the thickness of the high-ductility concrete raft expansion zone and the thickness of the corridor raft is 100-200 mm.

10. A basement structure using high ductility concrete belts instead of expansion joints, comprising two basements and an underground gallery connecting the two basements, the underground gallery comprising a gallery raft and a gallery top plate, the gallery raft connecting the basement rafts of the two basements, a steel mesh is embedded in the gallery raft, the gallery top plate connects the basement bottom top plates of the two basements, the basement raft, gallery raft, basement bottom top plate and gallery top plate are all cast with ordinary concrete, and is characterized in that: Two raft construction joints are arranged on the corridor raft slab, wherein one raft construction joint is close to one end of the underground corridor, and the other raft construction joint is close to the other end of the underground corridor, and the two raft construction joints divide the corridor raft slab into three parts, and the corridor raft slabs of the three parts are sequentially distributed along the length direction of the underground corridor, and high-ductility concrete raft expansion and contraction belts are arranged in the two raft construction joints, and the corridor raft slabs of each part are connected as one by the high-ductility concrete raft expansion and contraction belts; Two roof construction joints are arranged on the corridor roof, one of which is close to one end of the underground corridor, and the other is close to the other end of the underground corridor. The two roof construction joints divide the corridor roof into three parts. The three parts of the corridor roof are distributed in sequence along the length direction of the underground corridor. High-ductility concrete roof expansion belts are provided in the two roof construction joints, and the corridor roofs of each part are connected as a whole through the high-ductility concrete roof expansion belts.

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