CN113605370B - Original underground diaphragm wall permanent-changing structure and construction process thereof - Google Patents
Original underground diaphragm wall permanent-changing structure and construction process thereof Download PDFInfo
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- CN113605370B CN113605370B CN202110987402.5A CN202110987402A CN113605370B CN 113605370 B CN113605370 B CN 113605370B CN 202110987402 A CN202110987402 A CN 202110987402A CN 113605370 B CN113605370 B CN 113605370B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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Abstract
The application discloses an original underground diaphragm wall permanent structure and a construction process thereof, and belongs to the field of foundation pit construction. Original underground continuous wall becomes permanent structure, including setting up in the continuous wall at foundation ditch edge, be equipped with between foundation ditch bottom and the continuous wall and reserve the soil bench, the foundation ditch bottom is equipped with the conversion thick plate, reserves the soil bench and is equipped with the bottom plate, the one end and the conversion thick plate of bottom plate are connected, the other end is connected with the continuous wall, be equipped with support piece in the bottom plate, support piece's one end is connected in the conversion thick plate, the other end is connected in the continuous wall, this application has the advantage that improves the stability of continuous wall.
Description
Technical Field
The invention relates to the field of foundation pit construction, in particular to a permanent structure of an original underground diaphragm wall and a construction process thereof.
Background
The diaphragm wall is a common structure in foundation pit construction, is a continuous concrete wall, is often applied to the fields of outer walls of underground parts of buildings, underground streets, subways and the like, and can play a role in retaining water and bearing load.
The common continuous wall is constructed before excavation of a foundation pit, a deep groove is excavated along the peripheral axis of a project by utilizing a grooving machine, then a steel reinforcement cage structure is placed in the groove, concrete is poured, and the continuous wall is obtained after the concrete is formed, so that the supporting effect is achieved on the excavation of the foundation pit.
In the actual foundation pit construction process, the built continuous wall is found to have insufficient embedding depth, and the depth of the continuous wall cannot be reduced any more, so that the continuous wall is difficult to further embed, the supporting effect on the foundation pit is reduced, and the construction is influenced.
Disclosure of Invention
In order to improve the stability of the diaphragm wall, the application provides an original underground diaphragm wall permanent structure and a construction process thereof.
In a first aspect, the original underground diaphragm wall permanent structure provided by the application adopts the following technical scheme:
the original underground diaphragm wall becomes permanent structure, including setting up in the diaphragm wall at foundation ditch edge, the foundation ditch bottom with be equipped with between the diaphragm wall and reserve the soil bench, the foundation ditch bottom is equipped with the conversion thick plate, reserve the soil bench and be equipped with the bottom plate, the one end of bottom plate with the conversion thick plate is connected, the other end with the diaphragm wall is connected, be equipped with support piece in the bottom plate, support piece's one end connect in the conversion thick plate, the other end connect in the diaphragm wall.
Through adopting above-mentioned technical scheme, set up conversion thick plate and bottom plate, make when reserving the soil bench and exist, the foundation ditch bottom also can be further connected with the diaphragm wall, form permanent structure between foundation ditch bottom and diaphragm wall, thereby improve the stability of diaphragm wall, support piece sets up in the bottom plate simultaneously, improve the intensity of bottom plate, improve the supporting role of conversion thick plate to the diaphragm wall through support piece in addition, further improve the stability of diaphragm wall, and then improve the effect of strutting to the foundation ditch.
Optionally, a slope is arranged on one side of the reserved soil bench facing the conversion thick plate, and the slope inclines upwards from one side close to the conversion thick plate to one side close to the continuous wall.
By adopting the technical scheme, the slope transmits the gravity of the reserved soil platform to the joint of the continuous wall and the bottom of the foundation pit, so that the center of gravity of the continuous wall is moved downwards, and the stability of the continuous wall is improved.
Optionally, the slope surface is provided with a concrete slope protection layer, a reinforcing mesh is arranged in the concrete slope protection layer, and the reserved soil platform is inserted with soil nails.
Through adopting above-mentioned technical scheme, the structural stability of reserving the soil platform can be improved to the cooperation of concrete slope protection layer, reinforcing bar net and soil nail, and then improves the stability of continuous wall.
Optionally, a reinforcing soil layer is filled in a space formed by the slope surface, the conversion thick plate and the bottom plate.
Through adopting above-mentioned technical scheme, the inseparability between reinforcement soil layer can improve reservation soil platform, conversion thick plate and the bottom plate improves the structural stability of foundation ditch bottom to make the permanent structural stability of continuous wall higher.
Optionally, support piece is shaped steel, shaped steel sliding connection has the reinforcement, the reinforcement include two respectively the butt in the gusset plate of shaped steel web both sides wall with connect in the connecting strip between the gusset plate, the confession has been seted up to the tip of shaped steel web the inseparable groove of connecting strip, the confession has been seted up to the conversion thick plate the inseparable mounting groove of reinforcement, the gusset plate with be connected with clamping screw between the shaped steel web.
Through adopting above-mentioned technical scheme, when shaped steel and conversion thick plate are connected, the reinforcement can insert the mounting groove to strengthen being connected of shaped steel and conversion thick plate, improve the stability of connecting the position, thereby improve the stability of permanent structure.
Optionally, the reinforcing member further comprises a stabilizing plate connected with the reinforcing plate and abutted against the section steel flange plate.
Through adopting above-mentioned technical scheme, improve the stability between reinforcement and the shaped steel to improve the stability that conversion thick plate and shaped steel are connected.
In a second aspect, the construction process of the original underground diaphragm wall permanent structure provided by the application adopts the following technical scheme:
the construction process for changing the original underground diaphragm wall into the permanent structure comprises the following steps:
s1, pouring concrete at the bottom of a foundation pit to convert a thick plate;
s2, cutting and flattening an original soil platform on one side of the continuous wall to form a reserved soil platform;
s3, connecting a supporting piece between the conversion thick plate and the continuous wall, wherein the supporting piece is positioned above the reserved soil platform;
and S4, pouring a bottom plate on the basis of the supporting piece, wherein two ends of the bottom plate are respectively connected to the conversion thick plate and the continuous wall, and the bottom surface of the bottom plate is connected with the top surface of the reserved soil platform, so that the supporting piece is embedded in the bottom plate to form a permanent structure of the continuous wall.
By adopting the technical scheme, the conversion thick plate is formed firstly, the foundation is made for the arrangement of the supporting piece, the continuous wall is reinforced by the supporting piece, the bottom plate is poured, the bottom plate and the supporting piece are matched with each other to reinforce the continuous wall, a permanent structure is formed on the basis of the original continuous wall, and the supporting effect on the periphery of the foundation pit is improved.
Optionally, in step S2, after the reserved soil block is formed, soil nails are inserted into the slope of the reserved soil block, and then concrete is sprayed and a reinforcing mesh is hung on the slope to form a concrete slope protection layer, and the reinforcing mesh is connected to the soil nails.
Through adopting above-mentioned technical scheme, consolidate the slope of reserving the soil platform, improve the structural strength who reserves the soil platform.
Optionally, in step S2, the excavated soil of the original soil platform is used as spare soil for standby; in the step S4, after the bottom plate is formed by pouring, the spare soil is backfilled into a space formed by the slope surface, the conversion thick plate and the bottom plate to form a reinforcing soil layer.
By adopting the technical scheme, the spare soil is selected as the reinforcing soil layer, so that the environment is protected, the resources are saved, the soil quality of the reinforcing soil layer is close to that of the reserved soil platform, and the stability of a permanent structure is favorably maintained.
Optionally, in step S1, a mounting groove is reserved in the conversion thick plate when the conversion thick plate is poured, and in step S3, after the support member reaches a predetermined mounting position, the reinforcement member is slid to be inserted into the mounting groove, and then the reinforcement member and the support member are fixed by a fixing screw, and cement mortar is injected into the mounting groove.
Through adopting above-mentioned technical scheme, before support piece and conversion thick plate fixed connection, the reinforcement can play prepositioning's effect, and the reinforcement can improve the stability of being connected of conversion thick plate and support piece simultaneously.
In summary, the present application has at least one of the following advantages:
1. this application is through setting up conversion thick plate and bottom plate, make when reserving the soil bench and exist, the foundation ditch bottom also can be further connected with the diaphragm wall, form permanent structure between foundation ditch bottom and diaphragm wall, thereby improve the stability of diaphragm wall, support piece sets up in the bottom plate simultaneously, improve the intensity of bottom plate, and improve the supporting role of conversion thick plate to the diaphragm wall through support piece, further improve the stability of diaphragm wall, and then improve the effect of strutting to the foundation ditch.
2. The concrete slope protection layer, the soil nails and the reinforcing mesh of the slope surface can improve the structural stability of the reserved soil platform, and the reinforcing soil layer can supplement the supporting bottom plate, so that the stability of the permanent structure is further improved.
Drawings
Fig. 1 is a plan view of an original diaphragm wall.
Fig. 2 is a plan view of the diaphragm wall at step S1 of example 1 of the present application.
Fig. 3 is a plan view of the continuous wall at step S2 in example 1 of the present application.
Fig. 4 is a plan view of the diaphragm wall at the steps S3 and S4 of example 1 of the present application.
Fig. 5 is a plan view of the diaphragm wall at the time of the steps of S3 and S4 in example 2 of the present application.
Fig. 6 is a partially enlarged view of a in fig. 5.
FIG. 7 is a perspective view of the structural steel and the reinforcing member according to example 2 of the present application.
Description of reference numerals:
1. a foundation pit; 11. a raw soil platform; 2. a continuous wall; 21. fixing the steel plate; 3. converting the thick plate; 31. pre-burying a steel plate; 4. reserving a soil platform; 41. a slope surface; 42. a concrete slope protection layer; 43. soil nailing; 5. section steel; 6. a base plate; 7. reinforcing the soil layer; 8. a reinforcement; 81. a connecting strip; 82. a reinforcing plate; 83. a stabilizing plate; 84. fixing the screw rod; 85. mounting grooves; 86. and (6) hiding the groove.
Detailed Description
As shown in fig. 1, the continuous wall 2 is disposed at the edge of the foundation pit 1, the continuous wall 2 is an original continuous wall 2, an original soil platform 11 is formed between the continuous wall 2 and the bottom of the foundation pit 1, and the original soil platform 11 is disposed in an inclined manner.
The present application is described in further detail below with reference to figures 2-7.
Example 1
The application embodiment 1 discloses a construction process for changing an original underground diaphragm wall into a permanent structure. The construction process for changing the original underground diaphragm wall into the permanent structure comprises the following steps:
s1, pouring a conversion thick plate.
As shown in fig. 2, install framework of steel reinforcement in foundation ditch 1 bottom, framework of steel reinforcement installs pre-buried steel sheet 31, then uses framework of steel reinforcement as basis concreting, treats behind the concrete shaping, obtains conversion thick plate 3, and pre-buried steel sheet 31 stretches out the lateral wall of conversion thick plate 3, and pre-buried steel sheet 31 is provided with two in the direction of height of conversion thick plate 3, and in this embodiment, the thickness of conversion thick plate 3 specifically is 4300 mm.
And S2, constructing a reserved soil platform.
As shown in fig. 3, excavating equipment such as an excavator is used for excavating soil on the upper portion of the original soil platform 11, the upper portion of the original soil platform 11 is flattened to form a reserved soil platform 4, the upper portion of the reserved soil platform 4 is made to be a horizontal plane, the vertical distance between the horizontal plane of the reserved soil platform 4 and the bottom of the foundation pit 1 is 3300mm, one surface of the reserved soil platform 4 facing the conversion thick plate 3 is a slope surface 41, the slope surface 41 inclines upwards from one side close to the conversion thick plate 3 to one side close to the continuous wall 2, one side of the bottom surface of the conversion thick plate 3 is close to the bottom of the slope surface 41, the slope surface 41 can press the stress of the reserved soil platform 4 to the direction of the continuous wall 2, the tendency that the continuous wall 2 falls down into the foundation pit 1 is reduced, and the supporting effect on the foundation pit 1 is improved; in addition, the soil dug from the original soil table 11 is collected as reserve soil.
Drilling a hole on the slope surface 41 and inserting a soil nail 43, so that the soil nail 43 is inserted into the reserved soil platform 4, one end of the soil nail 43 extends out of the slope surface 41, then injecting cement mortar into the drilled hole, and finishing the installation of the soil nail 43 after the cement mortar is molded.
The concrete is sprayed on the slope surface 41 twice, the thickness of the concrete layer obtained after each spraying is 50mm, after the first concrete spraying is finished to form a first concrete layer, the reinforcing mesh is hung on the surface of the first concrete layer, then the reinforcing mesh is welded and fixed with the soil nails 43, the concrete is sprayed on the surface of the first concrete layer for the second time to form a second concrete layer, so that a concrete slope protection layer 42 is formed on the slope surface 41, the slope surface 41 of the reserved soil platform 4 is reinforced, the condition that the soil on the slope surface 41 is loosened and slides down is reduced, the structural strength of the reserved soil platform 4 is improved, and the supporting effect on the edge of the foundation pit 1 is improved.
And S3, mounting a supporting piece.
As shown in fig. 4, two fixing steel plates 21 are fixedly installed on one side of the continuous wall 2 facing the foundation pit 1, the two fixing steel plates 21 are arranged along the height direction of the continuous wall 2, and the fixing steel plates 21 are horizontally aligned with the embedded steel plates 31 for subsequent installation of the supporting member.
Support piece specifically is shaped steel 5 of I-shaped, during installation shaped steel 5, hoist shaped steel 5 to between conversion thick plate 3 and the continuous wall 2 earlier, the both ends of shaped steel 5 are close to fixed steel sheet 21 and pre-buried steel sheet 31 respectively, and the height of shaped steel 5 aligns with the height of fixed steel sheet 21 and pre-buried steel sheet 31, then translation shaped steel 5, make shaped steel 5's one end butt between two fixed steel sheets 21, the other end butt is between two pre-buried steel sheets 31, then with shaped steel 5 and fixed steel sheet 21 and pre-buried steel sheet 31 welded fastening, accomplish support piece's installation.
And S4, pouring a bottom plate.
As shown in fig. 4, the section steel 5 is used as a foundation for casting concrete to form a bottom plate 6, so that the section steel 5 is embedded in the bottom plate 6, in this embodiment, the thickness of the bottom plate 6 is specifically 1000mm, the top surface of the bottom plate 6 is flush with the top surface of the conversion thick plate, two ends of the bottom plate 6 are respectively and fixedly connected to the conversion thick plate 3 and the continuous wall 2, the bottom surface of the bottom plate 6 is fixedly connected to the horizontal plane of the reserved soil bench 4, so as to connect the continuous wall 2, the conversion thick plate 3 and the reserved soil bench 4, a stable permanent structure is formed at the edge of the foundation pit 1, the section steel 5 can improve the structural strength of the bottom plate 6, the bottom plate 6 can protect the section steel 5 to maintain the connection strength of the continuous wall 2 and the conversion thick plate 3, and the stability of the continuous wall 2 is improved under the cooperation of the bottom plate 6 and the section steel 5.
And after the bottom plate 6 is formed, backfilling the spare soil into a space formed by the slope surface 41, the conversion thick plate 3 and the bottom plate 6 to form a reinforcing soil layer 7, and finishing the construction of the permanent structure of the continuous wall 2. The reinforcing soil layer 7 can improve the connection strength of the bottom plate 6 and the conversion thick plate 3, further improve the tightness between the bottom plate 6, the conversion thick plate 3 and the reserved soil platform 4, enable the pressure borne by the continuous wall 2 to be larger, use the standby soil, enable the reinforcing soil layer 7 to be close to the soil quality of the reserved soil platform, and be beneficial to keeping the stability of the permanent structure of the continuous wall 2.
Example 2
As shown in fig. 5 and 6, the present embodiment is different from embodiment 1 in steps S1 and S3 and in the difference of the section steel 5, in step S1, when the conversion thick plate 3 is poured, an installation groove 85 is reserved on the side of the conversion thick plate 3 facing the continuous wall 2, and the installation groove 85 is located between two embedded steel plates 31.
As shown in fig. 7, the section steel 5 is provided with a reinforcing member 8, the reinforcing member 8 comprises a connecting strip 81, a reinforcing plate 82 and a stabilizing plate 83, the reinforcing plate 82 is provided with two parallel reinforcing plates 82, the connecting strip 81 is fixed between one side edge of the two reinforcing plates 82, the stabilizing plate 83 is fixed on two opposite side edges of the reinforcing plate 82, the side edges are adjacent to the side edges of the reinforcing plate 82, which are fixed with the connecting strip 81, the reinforcing plate 82 and the stabilizing plate 83 are integrally formed, and one end of the section steel 5, which is close to the reinforcing member 8, is provided with a hidden groove 86; before the section steel 5 is installed, the two reinforcing plates 82 abut against two side walls of the web of the section steel 5 respectively, the stabilizing plates 83 abut against the flange plates of the section steel 5, so that the reinforcing members 8 are slidably connected to the section steel 5, and the connecting strips 81 are inserted into the hidden grooves 86, so that the reinforcing members 8 do not protrude out of the end portion of the section steel 5, and the reinforcing members 8 can be hidden in the section steel 5.
As shown in fig. 6 and 7, in the step S3, after the both ends of the section steel 5 are respectively positioned between the two fixed steel plates 21 and between the two embedded steel plates 31, sliding the reinforcing member 8 so that the reinforcing member 8 is inserted into the installation groove 85, the reinforcing plate 82 and the flange plate are both abutted against the inner wall of the installation groove 85 while keeping the portion of the reinforcing plate 82 and the portion of the flange plate abutted against the section steel 5, the installation of the section steel 5 is pre-positioned, then a hole is drilled between the two reinforcing plates 82 and the web plate of the section steel 5, a fixing screw 84 is penetrated through the hole, nuts are connected with the two ends of the fixing screw 84 in a threaded manner, the nuts abut against the reinforcing plates 82, the position of the reinforcing part 8 is fixed, thereby utilize the position that conversion thick plate 3 is located mounting groove 85 to support shaped steel 5, further connect shaped steel 5 and conversion thick plate 3, improve the stability that shaped steel 5 and conversion thick plate 3 are connected the position, and then improve the structural stability of shaped steel 5 and bottom plate 6.
After the reinforcing member 8 is inserted into the mounting groove 85, cement mortar is injected into the mounting groove 85, so that the stability of the reinforcing member 8 in the mounting groove 85 is further improved.
This application is under construction on the basis of original continuous wall and is obtained permanent structure, not only remains original continuous wall, and still make full use of original continuous wall improves the supporting effect at foundation ditch edge for the stability at foundation ditch edge is higher.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. Original underground continuous wall becomes permanent structure, its characterized in that: the foundation pit supporting structure comprises a continuous wall (2) arranged at the edge of a foundation pit (1), a reserved soil platform (4) is arranged between the bottom of the foundation pit (1) and the continuous wall (2), a conversion thick plate (3) is arranged at the bottom of the foundation pit (1), a bottom plate (6) is arranged on the reserved soil platform (4), one end of the bottom plate (6) is connected with the conversion thick plate (3), the other end of the bottom plate is connected with the continuous wall (2), a supporting piece is arranged in the bottom plate (6), one end of the supporting piece is connected with the conversion thick plate (3), and the other end of the supporting piece is connected with the continuous wall (2);
the supporting piece is made of profile steel (5), the profile steel (5) is connected with a reinforcing piece (8) in a sliding mode, the reinforcing piece (8) comprises two reinforcing plates (82) which abut against two side walls of a web of the profile steel (5) respectively and connecting strips (81) connected between the reinforcing plates (82), hidden grooves (86) for the connecting strips (81) to insert into are formed in the end portion of the web of the profile steel (5), mounting grooves (85) for the reinforcing piece (8) to insert into are formed in the conversion thick plate (3), and fixing screws (84) are connected between the reinforcing plates (82) and the web of the profile steel (5);
the reinforcing member (8) further comprises a stabilizing plate (83) which is connected with the reinforcing plate (82) and abuts against the flange plate of the section steel (5).
2. The original underground diaphragm wall becomes permanent structure according to claim 1, characterized in that: a slope surface (41) is arranged on one side, facing the conversion thick plate (3), of the reserved soil platform (4), and the slope surface (41) inclines upwards from one side close to the conversion thick plate (3) to one side close to the continuous wall (2).
3. The original underground diaphragm wall permanent structure as claimed in claim 2, wherein: the slope surface (41) is provided with a concrete slope protection layer (42), a reinforcing mesh is arranged in the concrete slope protection layer (42), and soil nails (43) are inserted into the reserved soil platforms (4).
4. The original underground diaphragm wall permanent structure as claimed in claim 2, wherein: and a reinforcing soil layer (7) is filled in a space formed by the slope surface (41), the conversion thick plate (3) and the bottom plate (6).
5. The construction process for changing the original underground diaphragm wall into the permanent structure is characterized in that: the method is used for constructing the original underground continuous wall permanent structure of any one of claims 1 to 4, and comprises the following steps:
s1, pouring concrete at the bottom of a foundation pit (1) to convert a thick plate (3);
s2, flattening an original soil platform (11) located on one side of the continuous wall (2) to form a reserved soil platform (4);
s3, connecting a supporting piece between the conversion thick plate (3) and the continuous wall (2), wherein the supporting piece is positioned above the reserved soil platform (4);
s4, pouring a bottom plate (6) on the basis of the supporting piece, wherein two ends of the bottom plate (6) are respectively connected to the conversion thick plate (3) and the continuous wall (2), and the bottom surface of the bottom plate (6) is connected with the top surface of the reserved soil platform (4), so that the supporting piece is buried in the bottom plate (6) to form a permanent structure of the continuous wall (2).
6. The construction process of the original underground continuous wall into the permanent structure, according to claim 5, is characterized in that: in the step S2, after the reserved soil block (4) is formed, soil nails (43) are inserted into the slope surface (41) of the reserved soil block (4), and then concrete is sprayed and a reinforcing mesh is hung on the slope surface (41) to form a concrete slope protection layer (42), and the reinforcing mesh is connected to the soil nails (43).
7. The construction process for changing the original underground continuous wall into the permanent structure according to claim 6, which is characterized in that: in step S2, the excavated soil from the original soil table (11) is cut flat and used as spare soil; in the step S4, after the bottom plate (6) is formed by pouring, the spare soil is backfilled into a space formed by the slope surface (41), the conversion thick plate (3) and the bottom plate (6) to form a reinforcing soil layer (7).
8. The construction process of the original underground continuous wall into the permanent structure, according to claim 5, is characterized in that: in the step S1, an installation groove (85) is reserved in the conversion thick plate (3) when the conversion thick plate (3) is poured, and in the step S3, after the support member reaches a predetermined installation position, the reinforcement member (8) is slid to insert the reinforcement member (8) into the installation groove (85), then the reinforcement member (8) and the support member are fixed by a fixing screw (84), and cement mortar is injected into the installation groove (85).
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| CN202110987402.5A CN113605370B (en) | 2021-08-26 | 2021-08-26 | Original underground diaphragm wall permanent-changing structure and construction process thereof |
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| CN202110987402.5A CN113605370B (en) | 2021-08-26 | 2021-08-26 | Original underground diaphragm wall permanent-changing structure and construction process thereof |
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| CN113605370B true CN113605370B (en) | 2022-07-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES370530A1 (en) * | 1969-06-11 | 1971-04-16 | I C O S Impresa Costruzioni Op | Building of underground partition walls |
| CN100439634C (en) * | 2006-07-20 | 2008-12-03 | 上海建工股份有限公司 | Horizontal force transfer method for underground building modification |
| CN100543239C (en) * | 2007-08-22 | 2009-09-23 | 浙江大学 | The method of three usages of one pile in a kind of underground construction |
| CN201679098U (en) * | 2010-05-14 | 2010-12-22 | 北京工业大学 | Frame beam column fireproof node with catenary effect |
| CN208280163U (en) * | 2017-11-22 | 2018-12-25 | 安徽省建筑科学研究设计院 | A kind of patch builds existing underground connection wall indirect type connection structure |
| CN212506301U (en) * | 2020-06-30 | 2021-02-09 | 上海市机械施工集团有限公司 | Support system in combination assembled forever |
| CN112281868A (en) * | 2020-10-27 | 2021-01-29 | 华南理工大学 | Support system and method combining temporary foundation pit support and permanent slope support |
| CN113136871A (en) * | 2021-04-06 | 2021-07-20 | 中冶集团武汉勘察研究院有限公司 | Permanently-adjacent combined retaining structure for foundation pit and side slope in limited space of sloping field and construction method |
| CN113073739B (en) * | 2021-04-22 | 2022-06-03 | 国网河北省电力有限公司经济技术研究院 | Splicing structure of structural steel section |
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