Fabricated underground diaphragm wall

Abstract

The utility model discloses an assembly type underground diaphragm wall, which relates to the technical field of foundation pit support and comprises an underground cement soil diaphragm wall, reinforced concrete members are sequentially arranged in the underground cement soil diaphragm wall along the length direction of the underground cement soil diaphragm wall, and every two adjacent reinforced concrete members are connected through a buckle structure. An expansion device is arranged between every two adjacent reinforced concrete members, and every two adjacent reinforced concrete members are expanded through the expansion devices and lock the buckle structures in a buckling mode. According to the scheme, the gap between the two adjacent reinforced concrete members is expanded through the expansion device, the gap between the buckle structures is eliminated, the buckle structures are tightly buckled and locked, and the two adjacent reinforced concrete members expand in the length direction of the underground cement soil continuous wall through the expansion device and buckle and lock the buckle structures; and the connection strength and the connection stability between two adjacent reinforced concrete members in the underground cement continuous wall are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit enclosure, in particular to an assembled underground continuous wall. Background Art

[0002] In the existing construction of building foundation pits, the underground continuous wall is used to replace the side wall of the traditional cast-in-place reinforced concrete building foundation pit. It can not only serve as the foundation pit enclosure structure of the construction building, but also block the basement or prevent the soil outside the foundation pit from collapsing inwards; it can also serve as a permanent building foundation pit side wall, as the outer wall of the basement structure. The existing underground continuous wall includes an underground cement soil continuous wall and prefabricated reinforced concrete components inserted in the underground cement soil continuous wall. The prefabricated reinforced concrete components are arranged and distributed in sequence along the length direction of the underground cement soil continuous wall. The adjacent two prefabricated reinforced concrete components are connected as a whole by a plug-in device. Since there must be a gap between the plug-in devices of the adjacent two prefabricated reinforced concrete components, the underground continuous wall has poor stability between the prefabricated reinforced concrete components during the plug-in process of the prefabricated reinforced concrete components and the curing process, and is prone to displacement.

[0003] For example, Chinese patent publication number CN108951611A, publication date December 7, 2018, named "Channel-cut prefabricated underground continuous wall and construction method", includes an underground cement soil continuous wall, which is used to block groundwater to form a foundation pit enclosure; and prefabricated wall components inserted in the underground cement soil continuous wall, the prefabricated wall components include a number of vertical reinforced concrete prefabricated parts arranged in sequence along the length direction of the underground cement soil continuous wall, and two adjacent vertical reinforced concrete prefabricated parts are connected by mortise and tenon structures.

[0004] The disadvantage of the existing patent is that during the construction and curing process of the existing underground continuous wall, due to the gap between the plug-in devices of two adjacent prefabricated reinforced concrete components, the stability of the prefabricated reinforced concrete components located in the underground cement soil continuous wall is poor and it is easy to deviate. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the prefabricated reinforced concrete components located in the underground cement soil continuous wall have poor stability and are easy to deviate during the construction and curing process of the existing underground continuous wall, and to provide an assembled underground continuous wall that improves the connection stability between the prefabricated reinforced concrete components.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An assembled underground continuous wall includes an underground cement soil continuous wall, wherein the underground cement soil continuous wall is provided with reinforced concrete components arranged in sequence along the length direction of the underground cement soil continuous wall, and adjacent reinforced concrete components are connected by a snap-fit ​​structure, and an expansion device is provided between the adjacent reinforced concrete components, and the adjacent reinforced concrete components are expanded and locked with the snap-fit ​​structure by the expansion device. In the assembled underground continuous wall described in this scheme, adjacent reinforced concrete components are connected by a snap-fit ​​structure. Since there must be a gap between the snap-fit ​​structures, the adjacent reinforced concrete components are prone to offset and misalignment during assembly and curing of the underground cement soil continuous wall. The gap between the adjacent reinforced concrete components is expanded by the expansion device, and the gap between the snap-fit ​​structures is eliminated, so that the snap-fit ​​structures are tightly locked. The adjacent reinforced concrete components are expanded and locked with the snap-fit ​​structure along the length direction of the underground cement soil continuous wall by the expansion device, thereby improving the connection strength and connection stability between the adjacent reinforced concrete components in the underground cement soil continuous wall. The invention solves the problem that during the construction and curing process of the existing underground continuous wall, the precast reinforced concrete components in the underground cement soil continuous wall have poor stability and are prone to deviation due to the gap between the plug-in devices of two adjacent precast reinforced concrete components; the surface of the underground continuous wall is evenly stressed and has strong bending and torsion resistance.

[0008] Preferably, the buckle structure includes a slot provided on the side of one of the reinforced concrete components and a clip provided on the side of the other reinforced concrete component, and the clip cooperates with the slot. The reinforced concrete components are inserted into the underground cement soil continuous wall in sequence, and two adjacent reinforced concrete components are connected by the clip and the slot, and the clip is inserted into the slot. Since there must be a gap between the clip and the slot, an expansion device is required to expand and lock the buckle structure along the length direction of the underground cement soil continuous wall, so as to improve the connection strength and connection stability between two adjacent reinforced concrete components in the underground cement soil continuous wall.

[0009] Preferably, the expansion device comprises two support plates connected by rotation through a rotating shaft and an expansion piece located between the two support plates, the rotating shaft is provided with a screw, the expansion piece is sleeved on the screw and limited on the screw by a nut, and the support plate abuts against the side of the reinforced concrete member through the expansion piece. After the reinforced concrete member is inserted into the underground cement soil continuous wall, the expansion device is inserted between two adjacent reinforced concrete members, and the nut is rotated so that the expansion piece is inserted between the two rotationally arranged support plates, so that the support plate props up the two adjacent reinforced concrete members, so that the clamping plate and the clamping slot of the clamping structure are clamped and clamped, and the friction between the clamping plate and the clamping slot is increased, so that the clamping structure is stably connected and not easy to deviate along the length direction and width direction of the underground cement soil continuous wall.

[0010] Preferably, the clamping plate is vertically arranged along the vertical direction of the reinforced concrete component, the clamping slot is vertically arranged along the vertical direction of the reinforced concrete component, and the clamping slot passes through the upper end surface and the lower end surface of the reinforced concrete component. The vertically arranged clamping plate and the vertically arranged clamping slot cooperate to facilitate the connection of the buckle structure during the insertion of the reinforced concrete component.

[0011] Preferably, the buckle structure includes two first steel plates vertically arranged on the side of one of the reinforced concrete components and two second steel plates vertically arranged on the side of the other reinforced concrete component, one side plate of the first steel plate is fixed to the reinforced concrete component by bolts, and the other side plate of the first steel plate is parallel to the side of the reinforced concrete component where the first steel plate is located to form the clamping groove. The two first steel plates on one side of the same concrete component are symmetrically arranged or arranged in the same direction, and the first steel plates and the second steel plates are matched one by one.

[0012] Preferably, one side plate of the second steel plate is fixed to the reinforced concrete member by bolts, and the other side plate of the second steel plate is parallel to the side surface of the reinforced concrete member where the second steel plate is located. The two second steel plates on one side surface of the same reinforced concrete member are symmetrically arranged or arranged in the same direction, and the first steel plate and the second steel plate are matched one by one.

[0013] Preferably, the expansion device is located between two first steel plates on the side of the reinforced concrete member. The two first steel plates on one side of the same reinforced concrete member are symmetrically arranged or arranged in the same direction, the first steel plates and the second steel plates are matched one by one, and the expansion device is located between two groups of first steel plates and second steel plates that are locked and connected between two adjacent reinforced concrete members, so that the expansion device can stably expand along the length direction of the underground cement soil continuous wall and lock the buckle structure.

[0014] Preferably, a plug rod is provided in the slot, the card plate and the plug rod are both inserted in the slot, and the plug rod is located on the other side of the card plate and the slot. The plug rod is used to fill the gap in the slot, and when the expansion device expands along the length direction of the underground cement soil continuous wall and locks the buckle structure, there is a gap between the other side of the card plate and the slot and the slot, and the plug rod is inserted into the gap to further improve the stability of the buckle structure.

[0015] Preferably, the upper and lower ends of the reinforced concrete member are provided with steel sleeves, which are pre-buried in the reinforced concrete member. The steel sleeves can be used to extend the reinforced concrete member and can also be used to connect the concrete crown beam upwards and the H-shaped steel end plate downwards.

[0016] Preferably, the outer side of the flange of the reinforced concrete member is provided with a plurality of bolt holes and high-strength bolts. The bolt holes and high-strength bolts are preset on the outer side of the flange of the reinforced concrete member for connecting the concrete waist beam or steel waist beam of the support system after the subsequent foundation pit excavation, and can also be used to connect the waterproof material of the basement outer wall. The pre-buried high-strength bolts or bolt holes are removed for installation when the purlin / waterproof membrane needs to be connected.

[0017] Therefore, the utility model has the following beneficial effects: the gap between two adjacent reinforced concrete components is expanded by the expansion device, the gap between the snap-in structures is eliminated, and the snap-in structures are tightly locked. The two adjacent reinforced concrete components are expanded and locked with the snap-in structures along the length direction of the underground cement soil continuous wall by the expansion device, thereby improving the connection strength and connection stability between the two adjacent reinforced concrete components in the underground cement soil continuous wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an assembly drawing of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the utility model.

[0020] Figure 3 It is a structural schematic diagram of the expansion device in the utility model.

[0021] Figure 4 yes Figure 1 A partial enlarged view of point A in the middle.

[0022] Figure 5 yes Figure 2 A partial enlarged view of point B in the middle.

[0023] As shown in the figure:

[0024] Reinforced concrete components 1. Reinforcement sleeve 1.1.

[0025] Buckle structure 2, slot 2.1, first steel plate 2.1.1, clamping plate 2.2, second steel plate 2.2.1,

[0026] Expansion device 3, support plate 3.1, expansion piece 3.2, screw rod 3.3, nut 3.4, rotating shaft 3.5,

[0027] Insert rod 4. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the technical solution embodiments of the utility model clearer, the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0029] Embodiment 1, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 An assembled underground continuous wall shown includes an underground cement-soil continuous wall, in which reinforced concrete components 1 are arranged in sequence along the length direction of the underground cement-soil continuous wall, and adjacent reinforced concrete components 1 are connected by a snap-fit ​​structure 2, and an expansion device 3 is provided between the adjacent reinforced concrete components 1, and the adjacent reinforced concrete components 1 are expanded by the expansion device 3 and locked with the snap-fit ​​structure 2.

[0030] In the construction of existing building foundation pits, underground continuous walls are used to replace the side walls of traditional cast-in-place reinforced concrete building foundation pits. They can not only serve as the foundation pit enclosure structure of the construction building, and play a role in blocking the basement or preventing the soil outside the foundation pit from collapsing inwards; they can also serve as the permanent side walls of the building foundation pit, and serve as the outer wall of the basement structure. The existing underground continuous wall includes an underground cement soil continuous wall and precast reinforced concrete components 1 inserted in the underground cement soil continuous wall. The precast reinforced concrete components 1 are arranged and distributed in sequence along the length direction of the underground cement soil continuous wall. The adjacent two precast reinforced concrete components 1 are connected as a whole through a plug-in device. Since there must be a gap between the plug-in devices of the adjacent two precast reinforced concrete components 1, the underground continuous wall has poor stability between the precast reinforced concrete components 1 during the plug-in process of the precast reinforced concrete components 1 and the curing process, and is prone to displacement.

[0031] The assembled underground continuous wall described in the above embodiment is as follows: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, two adjacent reinforced concrete components 1 are connected by a buckle structure 2. Since there must be a gap between the buckle structures 2, the adjacent reinforced concrete components 1 are prone to offset and dislocation during assembly and curing of the underground cement soil continuous wall. The gap between the adjacent reinforced concrete components 1 is expanded by an expansion device 3 to eliminate the gap between the buckle structures 2, so that the buckle structures 2 are tightly locked. The adjacent reinforced concrete components 1 are expanded and locked by the expansion device 3 along the length direction of the underground cement soil continuous wall, thereby improving the connection strength and connection stability between the adjacent reinforced concrete components 1 in the underground cement soil continuous wall. The problem that the prefabricated reinforced concrete components 1 located in the underground cement soil continuous wall are poorly stable and easily offset due to the gap between the plug-in devices of the adjacent two prefabricated reinforced concrete components 1 during the construction and curing of the existing underground continuous wall is solved; the surface of the underground continuous wall is subjected to uniform force and has strong bending and torsion resistance.

[0032] like Figure 1 , Figure 2 , Figure 3, Figure 4 , Figure 5 The reinforced concrete member 1 shown is prefabricated in the factory, and its length is determined according to the number of basement floors. It is generally considered to be 1~3m beyond the basement depth. The total length can generally be designed to be 4m~20m. It can be used as a retaining structure for foundation pit protection and can also serve as the exterior wall of the basement structure. It is prefabricated in the factory, with good quality control and fast production speed. The retaining pile wall does not need to be pulled out after the construction is completed, which can avoid the ground deformation problem caused by the pile pulling process of the existing prefabricated construction methods such as SMW method, TRD method, HU method, CSM method, etc.

[0033] Further, the reinforced concrete component 1 is optimized, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the upper and lower ends of the reinforced concrete component 1 are both provided with a steel sleeve 1.1, and the steel sleeve 1.1 is pre-embedded in the reinforced concrete component 1. The steel sleeve 1.1 can be used to extend the reinforced concrete component 1, and can also be used to connect the concrete crown beam upwards and the H-shaped steel end plate downwards.

[0034] As a preferred embodiment, the reinforced concrete component 1 is optimized, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the outer side of the flange of the reinforced concrete component 1 is provided with a plurality of bolt holes and high-strength bolts. The bolt holes and high-strength bolts are preset on the outer side of the flange of the reinforced concrete component 1 for connecting the concrete waist beam or steel waist beam of the support system after the subsequent foundation pit excavation, and can also be used to connect the waterproof material of the basement outer wall. The pre-buried high-strength bolts or bolt holes are removed for installation when the purlin / waterproof membrane needs to be connected.

[0035] Embodiment 2, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 An assembled underground continuous wall shown includes an underground cement-soil continuous wall, in which reinforced concrete components 1 are arranged in sequence along the length direction of the underground cement-soil continuous wall, and adjacent reinforced concrete components 1 are connected by a snap-fit ​​structure 2, and an expansion device 3 is provided between the adjacent reinforced concrete components 1, and the adjacent reinforced concrete components 1 are expanded by the expansion device 3 and locked with the snap-fit ​​structure 2.

[0036] In this embodiment, Figure 1 , Figure 2 , Figure 4 , Figure 5As shown, the buckle structure 2 includes a slot 2.1 provided on the side of one of the reinforced concrete components 1 and a clip 2.2 provided on the side of another reinforced concrete component 1, and the clip 2.2 cooperates with the slot 2.1. The reinforced concrete components 1 are inserted into the underground cement soil continuous wall in sequence, and the adjacent reinforced concrete components 1 are connected by the clip 2.2 and the slot 2.1, and the clip 2.2 is inserted into the slot 2.1. Since there must be a gap between the clip 2.2 and the slot 2.1, an expansion device 3 is required to expand and lock the buckle structure 2 along the length direction of the underground cement soil continuous wall, so as to improve the connection strength and connection stability between the adjacent reinforced concrete components 1 in the underground cement soil continuous wall.

[0037] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the expansion device 3 includes two support plates 3.1 rotatably connected by a rotating shaft 3.5 and an expansion piece 3.2 located between the two support plates 3.1, the rotating shaft 3.5 is provided with a screw 3.3, the expansion piece 3.2 is sleeved on the screw 3.3 and limited on the screw 3.3 by a nut 3.4, and the support plate 3.1 abuts against the side of the reinforced concrete member 1 through the expansion piece 3.2. After the reinforced concrete member 1 is inserted into the underground cement soil continuous wall, the expansion device 3 is inserted between two adjacent reinforced concrete members 1, and the nut 3.4 is rotated so that the expansion piece 3.2 is inserted between the two rotatably arranged support plates 3.1, so that the support plate 3.1 props up the two adjacent reinforced concrete members 1, so that the clamping plate 2.2 and the clamping groove 2.1 of the clamping structure 2 are clamped and clamped, and the friction between the clamping plate 2.2 and the clamping groove 2.1 is increased, so that the clamping structure 2 is stably connected and not easy to deviate along the length direction and width direction of the underground cement soil continuous wall.

[0038] The assembled underground continuous wall described in the above embodiment is as follows: Figure 1 , Figure 2 , Figure 4 , Figure 5As shown, two adjacent reinforced concrete components 1 are connected by a buckle structure 2. Since there must be a gap between the buckle structures 2, the adjacent reinforced concrete components 1 are prone to offset and dislocation during assembly and curing of the underground cement soil continuous wall. The gap between the adjacent reinforced concrete components 1 is expanded by an expansion device 3 to eliminate the gap between the buckle structures 2, so that the buckle structures 2 are tightly locked. The adjacent reinforced concrete components 1 are expanded and locked by the expansion device 3 along the length direction of the underground cement soil continuous wall, thereby improving the connection strength and connection stability between the adjacent reinforced concrete components 1 in the underground cement soil continuous wall. The problem that the prefabricated reinforced concrete components 1 in the underground cement soil continuous wall are poorly stable and easily offset due to the gap between the plug-in devices of the adjacent two prefabricated reinforced concrete components 1 during the construction and curing of the existing underground continuous wall is solved; the surface of the underground continuous wall is subjected to uniform force and has strong bending and torsion resistance.

[0039] The buckle structure 2 is further optimized, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the clamping plate 2.2 is vertically arranged along the vertical direction of the reinforced concrete component 1, and the clamping slot 2.1 is vertically arranged along the vertical direction of the reinforced concrete component 1, and the clamping slot 2.1 penetrates the upper end surface and the lower end surface of the reinforced concrete component 1. The vertically arranged clamping plate 2.2 cooperates with the vertically arranged clamping slot 2.1, so that the connection of the buckle structure 2 is convenient during the insertion process of the reinforced concrete component 1.

[0040] Furthermore, the card board 2.2 and the card slot 2.1 are optimized, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the buckle structure 2 includes two first steel plates 2.1.1 vertically arranged on the side of one reinforced concrete component 1 and two second steel plates 2.2.1 vertically arranged on the side of another reinforced concrete component 1, one side plate of the first steel plate 2.1.1 is fixed to the reinforced concrete component 1 by bolts, and the other side plate of the first steel plate 2.1.1 is parallel to the side of the reinforced concrete component 1 where the first steel plate 2.1.1 is located to form the clamping groove 2.1. The two first steel plates 2.1.1 on one side of the same reinforced concrete component are symmetrically arranged or arranged in the same direction, and the first steel plate 2.1.1 and the second steel plate 2.2.1 are matched one by one.

[0041] like Figure 1 , Figure 2 , Figure 4 , Figure 5As shown, one side plate of the second steel plate 2.2.1 is fixed to the reinforced concrete component 1 by bolts, and the other side plate of the second steel plate 2.2.1 is parallel to the side surface of the reinforced concrete component 1 where the second steel plate 2.2.1 is located. The two second steel plates 2.2.1 on one side of the same reinforced concrete component are symmetrically arranged or arranged in the same direction, and the first steel plate 2.1.1 and the second steel plate 2.2.1 are matched one by one.

[0042] Therefore, if Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the expansion device 3 is located between the two first steel plates 2.1.1 on the side of the reinforced concrete component 1. The two first steel plates 2.1.1 on one side of the same reinforced concrete component are symmetrically arranged or arranged in the same direction, and the first steel plates 2.1.1 and the second steel plates 2.2.1 are matched one by one. The expansion device 3 is located between the two sets of first steel plates 2.1.1 and second steel plates 2.2.1 that are locked and connected between two adjacent reinforced concrete components 1, so that the expansion device 3 can stably expand and lock the buckle structure 2 along the length direction of the underground cement soil continuous wall.

[0043] Embodiment 3: The basic structure is based on the embodiment 2, and the buckle structure 2 is further optimized, such as Figure 1 , Figure 4 As shown, a plug rod 4 is provided in the slot 2.1, and the clamping plate 2.2 and the plug rod 4 are both inserted in the slot 2.1, and the plug rod 4 is located on the other side of the clamping plate 2.2 and the slot 2.1. The plug rod 4 is used to fill the gap in the slot 2.1. When the expansion device 3 expands along the length direction of the underground cement soil continuous wall and locks the buckle structure 2, there is a gap between the other side of the clamping plate 2.2 and the slot 2.1 and the slot 2.1. The plug rod 4 is inserted into the gap to further improve the stability of the buckle structure 2.

[0044] In summary, if Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the first, second and third embodiments have the following beneficial effects: the gap between two adjacent reinforced concrete components 1 is expanded by the expansion device 3, the gap between the buckle structure 2 is eliminated, and the buckle structure 2 is tightly locked. The adjacent reinforced concrete components 1 are expanded and locked with the buckle structure 2 along the length direction of the underground cement soil continuous wall by the expansion device 3, thereby improving the connection strength and connection stability between the adjacent reinforced concrete components 1 in the underground cement soil continuous wall. The problem that the prefabricated reinforced concrete components 1 in the underground cement soil continuous wall are poorly stable and easily offset due to the gap between the plug-in devices of the two adjacent prefabricated reinforced concrete components 1 during the construction and curing process of the existing underground continuous wall is solved; the surface of the underground continuous wall is subjected to uniform force and has strong bending and torsion resistance.

[0045] The specific embodiments described above are only preferred implementations of the present invention, and are not intended to limit the specific implementation scope of the present invention. All equivalent changes made in accordance with the shape and structure of the present invention should be included in the protection scope of the present invention.

Claims

1. An assembled underground continuous wall, including an underground cement soil continuous wall, characterized in that: The underground cement soil continuous wall is provided with reinforced concrete components arranged in sequence along the length direction of the underground cement soil continuous wall, adjacent reinforced concrete components are connected by a snap-fit ​​structure, an expansion device is provided between adjacent reinforced concrete components, and adjacent reinforced concrete components are expanded by the expansion device and locked with the snap-fit ​​structure.

2. The assembled underground continuous wall according to claim 1, characterized in that: The buckle structure comprises a clamping groove arranged on the side of one of the reinforced concrete components and a clamping plate arranged on the side of the other reinforced concrete component, and the clamping plate cooperates with the clamping groove.

3. The assembled underground continuous wall according to claim 2 is characterized in that: The expansion device includes two support plates rotatably connected by a rotating shaft and an expansion piece located between the two support plates. The rotating shaft is provided with a screw rod. The expansion piece is sleeved on the screw rod and limited on the screw rod by a nut. The support plates abut against the side of the reinforced concrete member through the expansion piece.

4. The assembled underground continuous wall according to claim 3 is characterized in that: The clamping plate is vertically arranged along the vertical direction of the reinforced concrete component, the clamping groove is vertically arranged along the vertical direction of the reinforced concrete component, and the clamping groove penetrates the upper end surface and the lower end surface of the reinforced concrete component.

5. The assembled underground continuous wall according to claim 4 is characterized in that: The snap-fit ​​structure includes two first steel plates vertically arranged on the side of one of the reinforced concrete components and two second steel plates vertically arranged on the side of the other reinforced concrete component. One side plate of the first steel plate is fixed to the reinforced concrete component by bolts, and the other side plate of the first steel plate is parallel to the side of the reinforced concrete component where the first steel plate is located to form the snap-fit ​​groove.

6. The assembled underground continuous wall according to claim 5 is characterized in that: One side plate of the second steel plate is fixed to the reinforced concrete component by bolts, and the other side plate of the second steel plate is parallel to the side surface of the reinforced concrete component where the second steel plate is located.

7. The assembled underground continuous wall according to claim 5 or 6, characterized in that: The expansion device is located between two first steel plates on the side surfaces of the reinforced concrete component.

8. The assembled underground continuous wall according to claim 2, 3, 4, 5 or 6, characterized in that: An insertion rod is arranged in the card slot, the card plate and the insertion rod are both inserted in the card slot, and the insertion rod is located at the other side of the card plate and the card slot being locked.

9. The assembled underground continuous wall according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: The upper end and the lower end of the reinforced concrete component are both provided with a steel sleeve, and the steel sleeve is pre-embedded in the reinforced concrete component.

10. The assembled underground continuous wall according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: The outer side surface of the flange of the reinforced concrete component is provided with a plurality of bolt holes and high-strength bolts.

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