Underground diaphragm wall

Abstract

The utility model relates to the technical field of rock stratum construction, in particular to an underground diaphragm wall which comprises a wall body main body, an inserting piece and filler, the wall body main body is partially embedded into the external ground, a sleeve is inserted into the wall body main body, a hollow cavity is formed in the sleeve, and an inserting hole is formed in the external ground corresponding to the bottom end of the sleeve. When the underground diaphragm wall is installed in a rock stratum area, only the wall body main body needs to be embedded into the shallow depth of the rock stratum, the inserting piece is embedded into the deep depth of the rock stratum, the inserting piece is inserted into the hollow cavity, the end, facing the external ground, of the inserting piece is inserted into the inserting hole, and the hollow cavity and the inserting hole are filled with the filler and the inserting piece is wrapped. Therefore, the good performance of the wall body main body is ensured. Due to the fact that the diameter of the plug-in mounting piece is small, the plug-in mounting hole can be drilled quickly through a small machine, and therefore the construction time and the construction cost of the underground diaphragm wall are effectively saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rock stratum construction technical field especially relates to a underground continuous wall. BACKGROUND

[0002] The underground continuous wall is the reinforced concrete wall under the ground during the construction of underground engineering, is used for supporting surrounding soft soil layer, water retaining etc.

[0003] In the shallow buried area of bedrock, the underground continuous wall needs to be embedded to the rock layer, and it is difficult to excavate the rock layer, which leads to the increase of construction cost and the extension of construction progress. UTILITY MODEL CONTENT

[0004] The utility model discloses a underground continuous wall, which aims to solve the problem of difficult installation of the existing underground continuous wall on the rock layer, leading to the increase of construction cost and construction time.

[0005] To solve the above problems, the utility model provides a underground continuous wall, which comprises:

[0006] The wall body is partially embedded to the external ground, the sleeve is inserted and installed in the wall body, the hollow cavity is arranged in the sleeve, and the insertion hole is formed in the external ground corresponding to the bottom end of the sleeve;

[0007] The insertion part is inserted into the hollow cavity and the insertion hole at one end towards the external ground; and

[0008] The filler is filled into the hollow cavity and the insertion hole and wraps the insertion part.

[0009] In an embodiment, the two ends of the sleeve are flush with the two ends of the wall body.

[0010] In an embodiment, the insertion part is provided with a plurality of sleeves, a plurality of sleeves are correspondingly inserted and installed in the wall body, a plurality of insertion holes are correspondingly formed in the external ground corresponding to the bottom end of the sleeve, one insertion part is sequentially arranged in one hollow cavity and one insertion hole, and each hollow cavity and each insertion hole is filled with the filler.

[0011] In an embodiment, the axial height of the insertion hole is H, wherein H is greater than or equal to 8m.

[0012] In an embodiment, the wall body is embedded into the external ground by a depth L, wherein L is greater than or equal to 0.3 m.

[0013] In an embodiment, the insert includes a plurality of insert tubes and a fastening band, the fastening band being sleeved on the outer circumferential side of the plurality of insert tubes to fasten the plurality of insert tubes.

[0014] In an embodiment, the insert includes a plurality of the fastening bands, the plurality of fastening bands being arranged at intervals along the axial direction of the insert tube.

[0015] In an embodiment, the insert further includes a fixing member, the fixing member being a cross structure, the four corners of the fixing member being provided with the insert tubes and being fastened by the fastening band.

[0016] In an embodiment, the underground continuous wall further includes a centralizer, the centralizer being sleeved on the outer circumferential side of the insert and abutting against the cavity wall of the hollow cavity on the outer side to ensure that the axial line of the insert and the axial line of the hollow cavity are arranged in parallel.

[0017] In an embodiment, the underground continuous wall includes a plurality of the centralizers, the plurality of centralizers being arranged at intervals along the axial direction of the insert.

[0018] The utility model provides a kind of underground continuous wall, including wall body, insert and filler, wherein wall body part is embedded into external ground, wall body is inserted with sleeve, hollow cavity is formed in sleeve, and the external ground is provided with insert hole at the bottom end of sleeve corresponding, insert is inserted into hollow cavity by the top end of sleeve, and part is inserted into insert hole, while filler is filled into hollow cavity and insert hole, and it is wrapped insert, so that the insert is tightly combined with wall body and forms a kind of underground continuous wall with "hanging foot" in bottom part.The underground continuous wall is installed in rock stratum area, only need to embed wall body into the depth of relatively shallow rock stratum, and insert is embedded into the depth of relatively deep rock stratum, so as to ensure that wall body has good performance.Due to the diameter of insert is smaller, drilling of insert hole can be completed faster using small machine, so that the construction time and construction cost of underground continuous wall are effectively saved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structure shown in these drawings without creative labor for those skilled in the art.

[0020] Figure 1It is a structural schematic view of one embodiment of the utility model underground continuous wall;

[0021] Figure 2 It is Figure 1 It is a structural schematic view of another view of the embodiment;

[0022] Figure 3 It is Figure 1 It is a structural schematic view of the embodiment of the insert;

[0023] Figure 4 It is Figure 1 It is a structural schematic view of one embodiment of the sleeve.

[0024] Explanation of reference numerals:

[0025] 10, wall body; 11, sleeve; 20, insert hole; 30, insert; 31, insert pipe; 32, fastening belt; 33, fixing piece; 40, filler; 50, sounding pipe.

[0026] The realization, functional features and advantages of the utility model will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications also change accordingly.

[0029] In addition, if the embodiments of the utility model involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of the various embodiments can be combined with each other, but must be based on the realization by those skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0030] A diaphragm wall is a reinforced concrete wall built below the ground surface during the construction of underground works, used to support the surrounding soft soil layer, water retaining, etc. One of the typical uses is as a temporary retaining structure during the deep foundation pit excavation process. During construction, the trench section is excavated under the condition of slurry protection, then the reinforcement cage is hoisted in, and finally the concrete is poured from the bottom of the trench to form a reinforced concrete continuous wall in the trench. In the shallow buried area of bedrock, the diaphragm wall needs to be embedded into the rock layer, which is difficult to excavate, thereby increasing the construction cost and prolonging the construction progress.

[0031] To solve the above problems, the utility model provides a diaphragm wall, which aims to solve the problem that the existing diaphragm wall is difficult to install on the rock layer, resulting in increased construction cost and construction time.

[0032] As Figures 1 to 4 In an embodiment, the diaphragm wall comprises a wall body 10, an insert 30 and a filler 40, the wall body 10 is partially embedded in the external ground, a sleeve 11 is inserted in the wall body 10, the sleeve 11 has a hollow cavity, an insertion hole 20 is formed in the external ground corresponding to the bottom end of the sleeve 11, the insert 30 is inserted into the hollow cavity and the insertion hole 20, and the filler 40 fills the hollow cavity and the insertion hole 20 and wraps the insert 30.

[0033] In this embodiment, the wall body 10 is a reinforced concrete continuous wall. When installing the wall body 10, first, a installation trench with a certain depth is dug at the specified installation position of the rock layer, the depth of the installation trench is much smaller than the depth required for the stable installation of the conventional diaphragm wall in the rock layer area, then the reinforcement cage is hoisted into the installation trench, the reinforcement cage is the skeleton structure of the wall body 10, which ensures that the wall body 10 has good bearing performance, and finally the wall body 10 is formed by pouring concrete. In addition, the sleeve 11 is pre-inserted in the reinforcement cage, and the two ends of the sleeve 11 are initially closed by two thin iron sheets to prevent the concrete from entering the hollow cavity of the sleeve 11 during pouring. The closed end of the top of the sleeve 11 is provided with an acoustic pipe 50, which is connected with an external detection device to detect whether the wall body 10 has sufficient structural stability, thereby improving the construction safety of the wall body 10.

[0034] Further, after the detection is completed, the thin iron sheets at both ends of the sleeve 11 are removed, and the drill rod of the drilling machine is extended into the hollow cavity to drill the rock layer corresponding to the bottom end of the sleeve 11 to form a plug-in hole 20. When the plug-in hole 20 has a certain depth, the plug-in part 30 is plugged into the hollow cavity and the plug-in hole 20, and the filler 40 is filled, which is a non-shrinking cement slurry, to ensure that the plug-in part 30 has sufficient compressive strength after filling. Because the hole diameter of the sleeve 11 is small, small machinery can be used to quickly drill the rock layer, thereby effectively saving the time and cost of the full-section rock excavation of the underground continuous wall.

[0035] The underground continuous wall provided by the utility model comprises a wall body 10, a plug-in part 30 and a filler 40, wherein the wall body 10 is partially embedded into a rock layer, the sleeve 11 is inserted into the wall body 10, the hollow cavity is formed in the sleeve 11, the plug-in hole 20 is formed in the external ground corresponding to the bottom end of the sleeve 11, the plug-in part 30 is plugged into the hollow cavity from the top end of the sleeve 11 and partially plugged into the plug-in hole 20, and the filler 40 is filled into the hollow cavity and the plug-in hole 20 and wrapped around the plug-in part 30, so that the plug-in part 30 is tightly combined with the wall body 10 to form an underground continuous wall with a "suspended foot" at the bottom. When the underground continuous wall is installed in the rock layer area, the wall body 10 is only embedded into the rock layer to a shallow depth, and the plug-in part 30 is embedded into the rock layer to a deep depth, so that the wall body 10 has good performance without needing to be embedded into the rock layer to a deep depth as a whole. Because the diameter of the plug-in part 30 is small, small machinery can be used to quickly drill the plug-in hole 20, thereby effectively saving the construction time and construction cost of the underground continuous wall.

[0036] As Figures 1 to 4 In an embodiment, the two ends of the sleeve 11 are flush with the two ends of the wall.

[0037] In the embodiment, the flush arrangement of the two ends of the sleeve 11 ensures that the interface between the wall body 10 and the sleeve 11 is smooth without protruding or recessed parts, thereby maintaining the overall aesthetic appearance and consistency of the underground continuous wall structure. This design helps to reduce the frictional resistance of the soil to the wall body 10, facilitating the construction and installation of the wall. In addition, the flush arrangement of the sleeve 11 exposes the thin iron sheets at the two ends of the sleeve 11 to the two ends of the wall body 10, so that the position of the sleeve 11 is easier for the construction personnel to locate, facilitating the plugging of the plug-in part 30, thereby simplifying the construction process and improving the installation convenience of the underground continuous wall.

[0038] As Figures 1 to 4In an embodiment, the plurality of insert pieces 30 are arranged in the wall body 10, and the plurality of sleeves 11 are correspondingly inserted into the wall body 10. The plurality of sleeves 11 are correspondingly provided with a plurality of insertion holes 20 on the outer ground surface. One insert piece 30 is sequentially arranged in one hollow cavity and one insertion hole 20. Each hollow cavity and each insertion hole 20 is filled with the filler 40.

[0039] In the embodiment, the plurality of sleeves 11 are uniformly distributed in the wall body 10. The specific number of the sleeves 11 is determined according to the size of the wall body 10 and the required bearing capacity. The outer ground surface of each sleeve 11 is correspondingly provided with an insertion hole 20. Each sleeve 11 is inserted with one insert piece 30. The wall body 10 and the underlying rock stratum are connected and fixed by the plurality of insert pieces 30, thereby further improving the bearing capacity and installation stability of the underground continuous wall.

[0040] As shown in FIG. 1, the wall body 10 is embedded in the rock stratum. The wall body 10 is provided with a plurality of sleeves 11. The sleeves 11 are arranged in the wall body 10. The sleeves 11 are correspondingly provided with a plurality of insertion holes 20 on the outer ground surface. The sleeves 11 are correspondingly inserted with a plurality of insert pieces 30. Figures 1 to 4 In an embodiment, the axial height of the insertion hole 20 is H, wherein H≥8m.

[0041] In the embodiment, the depth of the insert piece 30 embedded in the rock stratum should not be too small, otherwise the installation stability of the wall body 10 will be affected. Therefore, the axial height of the insertion hole 20 is H, wherein H≥8m. For example, H can be 8.5m, 9m, 9.5m, etc. The insert piece 30 can be inserted into the rock stratum deep enough to better resist the vertical load and horizontal load from the ground, thereby improving the installation stability of the underground continuous wall.

[0042] As shown in FIG. 1, the wall body 10 is embedded in the rock stratum. The wall body 10 is provided with a plurality of sleeves 11. The sleeves 11 are arranged in the wall body 10. The sleeves 11 are correspondingly provided with a plurality of insertion holes 20 on the outer ground surface. The sleeves 11 are correspondingly inserted with a plurality of insert pieces 30. Figures 1 to 4 In an embodiment, the depth of the wall body 10 embedded in the outer ground surface is L, wherein L≥0.3m.

[0043] In the embodiment, in order to ensure the stability of the initial installation of the wall body 10, the wall body 10 needs to be embedded in the rock stratum to a certain depth. However, since the wall body 10 is mainly inserted into the rock stratum deep position by the insert piece 30 to ensure the installation stability of itself, the depth of the wall body 10 embedded in the outer ground surface is L, wherein L≥0.3m. For example, L can be 0.3m, 0.35m, 0.4m, etc. The wall body 10 does not need to be embedded in the rock stratum deep position, thereby saving the construction time and construction cost.

[0044] As shown in FIG. 1, the wall body 10 is embedded in the rock stratum. The wall body 10 is provided with a plurality of sleeves 11. The sleeves 11 are arranged in the wall body 10. The sleeves 11 are correspondingly provided with a plurality of insertion holes 20 on the outer ground surface. The sleeves 11 are correspondingly inserted with a plurality of insert pieces 30. Figures 1 to 4 In an embodiment, the insert piece 30 includes a plurality of insertion pipes 31 and a fastening belt 32. The fastening belt 32 is arranged on the outer circumferential side of the plurality of insertion pipes 31 to fasten the plurality of insertion pipes 31.

[0045] In the embodiment, the material of the plug-in pipe 31 is threaded steel, so that the plug-in pipe 31 has sufficient structural strength and corrosion resistance, and will not be damaged and deformed when being plugged into the rock stratum. The fastening belt 32 is a steel belt, which provides uniform pressure on the outer circumferential side of the plug-in pipe 31, clamps the plurality of plug-in pipes, and ensures that the plurality of plug-in pipes will not be loosened. Through the combination of the plurality of threaded steels, the load from all directions can be more uniformly dispersed by the plug-in part 30, the stress concentration of a single threaded steel is reduced, and the carrying capacity and stability of the plug-in part 30 as a whole are improved. Meanwhile, the combination of the plurality of threaded steels can increase the contact area of the plug-in part with the outside, improve the adhesion with the filler 40, make the structure more firm, and further improve the installation stability of the underground continuous wall.

[0046] As Figures 1 to 4 In an embodiment, the plug-in part 30 includes a plurality of fastening belts 32, which are arranged at intervals along the axial direction of the plug-in pipe 31.

[0047] In the embodiment, the plurality of fastening belts 32 achieve multi-section fixation of the plug-in pipe 31 along the axial direction of the plug-in pipe 31, further reduce the possibility of relative displacement of adjacent plug-in pipes 31, and further improve the structural stability of the plug-in part 30. Meanwhile, the fastening belts 32 arranged at intervals along the axial direction can be fixed one by one during installation, so that the installation process is more convenient, and the state of each fastening belt 32 can be easily checked to ensure the installation quality. When subjected to external vibration or impact, the plurality of fastening belts 32 can jointly absorb and disperse energy, and improve the stability of the plug-in part 30.

[0048] As Figures 1 to 4 In an embodiment, the plug-in part 30 further includes a fixing part 33, which is a cross structure, and the four corners of the fixing part 33 are provided with plug-in pipes 31 and are fastened by fastening belts 32.

[0049] In the embodiment, the fixing part 33 is located at the middle position of the plug-in part 30 as a whole, and divides the plug-in part 30 into four parts, each of which is provided with a plug-in pipe 31, so that the fixing part 33 can fix the plug-in pipes 31 from four different directions, and further improve the structural stability of the plug-in part 30.

[0050] In other embodiments, the fixing part 33 can be four steel pipes welded on the outer circumferential side of a plug-in pipe 31 to form a cross structure, which serves as the fixing part 33 and also can be used as a plug-in pipe 31, improving the practicability of the fixing part 33.

[0051] As Figures 1 to 4 In an embodiment, the underground continuous wall further includes a centralizer, which is sleeved on the outer circumferential side of the plug-in part 30 on the inner side and abuts against the cavity wall of the hollow cavity on the outer side, so as to ensure that the axis of the plug-in part 30 and the axis of the hollow cavity are arranged in parallel.

[0052] In the embodiment, the insert 30 is inserted inside the insert 30, and the outer side is in abutment with the wall of the hollow cavity, the verticality of the insert 30 is ensured by the adjusting effect of the centralizer, and meanwhile, the uniform wrapping of the filler 40 on the outer circumferential side of the insert 30 is ensured, and the installation stability of the underground continuous wall is improved.

[0053] As ​ In an embodiment, the underground continuous wall comprises a plurality of centralizers, and the plurality of centralizers are arranged along the axial direction of the insert 30.

[0054] In the embodiment, the plurality of centralizers are arranged along the axial direction of the insert 30, and the perpendicularity of the insert 30 is further ensured, and meanwhile, when some centralizer is damaged, the other centralizers can still normally work, the inclination of the insert 30 is ensured, and the insertion stability of the insert 30 is ensured.

[0055] The above is only an exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation, direct / indirect application in other related technical fields under the technical concept of the utility model, and the contents of the utility model specification and drawings are included in the patent protection range of the utility model.

Claims

1. An underground diaphragm wall, characterised in that, The underground continuous wall comprises: a wall body partially embedded into an external ground, the wall body having sleeves inserted therein, the sleeves having hollow cavities therein, and the sleeves having insertion holes corresponding to the external ground at bottom ends thereof; insertion members inserted into the hollow cavities and the insertion holes corresponding to the external ground at one ends thereof; and filling materials filled into the hollow cavities and the insertion holes and wrapping the insertion members.

2. The diaphragm wall according to claim 1, wherein Both ends of the sleeves are flush with both ends of the wall body.

3. The diaphragm wall according to claim 1, wherein A plurality of the insertion members are provided, a plurality of the sleeves are correspondingly inserted into the wall body, a plurality of the insertion holes are correspondingly provided in the external ground at bottom ends of the sleeves, one of the insertion members is sequentially arranged in one of the hollow cavities and one of the insertion holes, and the filling materials are filled into each of the hollow cavities and each of the insertion holes.

4. The diaphragm wall according to claim 1, wherein An axial height of the insertion hole is H, and H≥8m.

5. The diaphragm wall according to claim 1, wherein A depth of the wall body embedded into the external ground is L, and L≥0.3m.

6. The diaphragm wall according to any one of claims 1 to 5, wherein The insertion member comprises a plurality of insertion pipes and a fastening belt, the fastening belt is sleeved on an outer circumferential side of the plurality of insertion pipes to fasten the plurality of insertion pipes.

7. The diaphragm wall according to claim 6, wherein The insertion member comprises a plurality of the fastening belts, and the plurality of fastening belts are arranged at intervals along an axial direction of the insertion pipe.

8. The diaphragm wall according to claim 6, wherein The insertion member further comprises a fixing member, the fixing member is a cross structure, and the four corners of the fixing member are provided with the insertion pipes and fastened by the fastening belt.

9. The diaphragm wall according to any one of claims 1 to 5, wherein The underground continuous wall further comprises centralizers, the centralizers are sleeved on an outer circumferential side of the insertion member, and outer sides of the centralizers abut against a cavity wall of the hollow cavity to ensure that an axial line of the insertion member and an axial line of the hollow cavity are parallel.

10. The diaphragm wall according to claim 9, wherein The underground continuous wall comprises a plurality of the centralizers, and the plurality of the centralizers are arranged at intervals along an axial direction of the insertion member.

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