CN111305232A - A foundation ditch protection strutting arrangement for construction of old city district - Google Patents

A foundation ditch protection strutting arrangement for construction of old city district Download PDF

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Publication number
CN111305232A
CN111305232A CN202010249133.8A CN202010249133A CN111305232A CN 111305232 A CN111305232 A CN 111305232A CN 202010249133 A CN202010249133 A CN 202010249133A CN 111305232 A CN111305232 A CN 111305232A
Authority
CN
China
Prior art keywords
support
construction
foundation pit
grouting
support columns
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010249133.8A
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Chinese (zh)
Inventor
苑举卫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Underground Space High Tech Industry Research Institute Co ltd
Original Assignee
Nanjing Underground Space High Tech Industry Research Institute Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Underground Space High Tech Industry Research Institute Co ltd filed Critical Nanjing Underground Space High Tech Industry Research Institute Co ltd
Priority to CN202010249133.8A priority Critical patent/CN111305232A/en
Publication of CN111305232A publication Critical patent/CN111305232A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • E02D17/04Bordering surfacing or stiffening the sides of foundation pits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E02D15/04Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • E02D5/76Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
    • E02D5/765Anchorings for bulkheads or sections thereof in as much as specially adapted therefor removable
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00Production methods
    • E02D2250/003Injection of material
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00Miscellaneous
    • E02D2600/40Miscellaneous comprising stabilising elements

Abstract

The invention discloses a foundation pit protection supporting device for construction and construction of old cities, which comprises a support component, an anchoring component and a movable grouting component, wherein the support component is attached to the side wall of a foundation pit and provides horizontal supporting force for the support component so as to enable the support component to be tightly abutted against the side wall of the foundation pit, so that the stability of the foundation pit is kept, the foundation pit is prevented from being deformed and collapsed in the construction process, a building on the outer side of the foundation pit is prevented from being influenced, the safety of construction and property is improved, the construction cost is low, the construction difficulty is small, the stability is high, and the anchoring component is used for connecting the support component and the foundation pit; remove slip casting subassembly and slide and set up at the top of bracket component to for a plurality of bracing piece subassemblies and anchor subassembly carry out the slip casting and consolidate, improved the intensity of component.

Description

A foundation ditch protection strutting arrangement for construction of old city district
Technical Field
The invention relates to the technical field of foundation pit support, in particular to a foundation pit protection supporting device for construction and construction in old cities.
Background
Along with the advanced development of our city, original underground pipe network circuit can not satisfy the demand, consequently, need to reform transform, move or change old urban area bottom line pipeline, circuit, and old urban area often the place is narrow and small, and peripheral building is intensive, and the construction period is long, and the construction degree of difficulty is big, when needs open cut foundation ditch construction, need guarantee the stability of foundation ditch, prevent that the foundation ditch warp, collapses, and cause peripheral building deformation, phenomenons such as fracture, consequently, need strut the foundation ditch, guarantee the stability before the foundation ditch backfills.
The Chinese patent discloses a foundation pit protection supporting structure (No. CN204199300U), and the patent technology can realize effective support and protection of the foundation pit, but the cost is higher, the construction difficulty is large, and the stability is not high. Therefore, the person skilled in the art provides a foundation pit protection and support device for construction and construction in old urban areas to solve the problems mentioned in the background art.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a foundation pit protection supporting device for construction and construction in old cities comprises a support assembly, an anchoring assembly and a movable grouting assembly, wherein the support assembly is attached to the side wall of a foundation pit and adopts a support rod assembly to provide horizontal supporting force for the support assembly so as to enable the support assembly to be tightly abutted against the side wall of the foundation pit; the anchoring assembly is used for connecting the support assembly and the foundation pit; the movable grouting assembly is arranged at the top of the bracket assembly in a sliding mode so as to perform grouting reinforcement on the support rod assemblies and the anchoring assemblies.
Further, as preferred, the bracket component includes that a plurality of be parallel to each other and horizontal distribution are in the horizontal support column of foundation ditch lateral wall and a plurality of vertical support column of embedding in the foundation ditch bottom perpendicularly, and is a plurality of between the horizontal support column with a plurality of all leave the interval between the vertical support column, adopt bolt fixed connection between vertical support column and the corresponding horizontal support column, it is per two relative equal fixedly connected with is no less than two sets of support rod subassemblies between the vertical support column, evenly distributed has the multiunit stock subassembly on the horizontal support column, and the tip of horizontal support column still is provided with concave type connecting block.
Further, as preferred, the top of the horizontal support post at top is provided with rather than the top cross support post that is parallel to each other, top cross support post is the component of an H shaped steel structure, top cross support post adopts bolt and vertical support post fixed linking to each other, evenly distributed has the multiunit stock subassembly on the top cross support post, and the tip of top cross support post is provided with concave type connecting block, still be fixed with the slip table on the top cross support post, the slip table constitutes the spout with top cross support post jointly for sliding connection removes the slip casting subassembly.
Further, as a preferred choice, the support rod assembly comprises two support tubes and two connecting tubes, wherein one end of each support tube is welded with a third flange, the support tubes are fixed on the vertical support column through the third flange and bolts, the other end of each support tube is welded with a first flange, a plurality of first through holes are distributed on a certain axis of each support tube, one of the first through holes is used as a grouting hole, the other one of the first through holes is used as an overflow hole, one end of each connecting tube is welded with a second flange corresponding to the first flange, the other end of each connecting tube is provided with an opening, two connecting tubes are placed between the two support tubes, the second flange of each connecting tube abuts against the first flange of each support tube, the outer surfaces of the two connecting tubes are jointly sleeved with a connecting sleeve, a plurality of threaded support rods are further arranged between the support tubes and the connecting tubes, and each threaded support rod, and adjusting nuts are in threaded connection with the two ends of the two flanges II.
Further, preferably, the connecting pipe is provided with a through hole II as an overflow hole, and the connecting sleeve is provided with a grouting through hole.
Further, as preferred, the stock subassembly includes the stock body, the one end fixedly connected with spacing ring of stock body, and the other end fixedly connected with anchor head of stock body, a plurality of grout overflow hole has all been seted up to the outside of the one end that the outside of stock body is close to the anchor head and the outside of anchor head, the outside of the one end of spacing ring is provided with the screw thread mouth, the outside meshing of screw thread mouth is connected with the nut.
Further, preferably, the anchor rod bodies penetrate through the transverse support columns and the top transverse support columns respectively and are embedded into the side wall of the foundation pit.
Further, as preferred, vertical support post and horizontal support column are the component of an H shaped steel structure, and the surface of vertical support post and horizontal support column has all been sprayed anti-rust paint.
Preferably, each end of the horizontal support column is fixedly connected with two symmetrically placed concave connection blocks by using a bolt, and each end of the top horizontal support column is fixedly connected with two symmetrically placed concave connection blocks by using a bolt.
Further, as preferred, remove the slip casting subassembly and include pumping installations, direction square pole and slide, the one end of direction square pole is equipped with the telescopic link, the below of the scalable end of telescopic link is fixed with a slider, the one end that the telescopic link was kept away from to the direction square pole is fixed with another slider, remove the slip casting subassembly and adopt the slider to slide to set up in the spout, the slide slides and sets up on the direction square pole, be fixed with the crossbearer on the slide, the one end detachable of crossbearer is fixed with slip casting straight tube one, the fixed intercommunication of the lower tip of slip casting straight tube one has slip casting head one, the other end detachable of crossbearer is fixed with slip casting straight tube two, the fixed intercommunication of the lower tip of slip casting straight tube two has slip casting head two, slip casting straight tube one and slip casting straight tube two all are linked together with pumping installations.
Compared with the prior art, the invention has the beneficial effects that: this device is provided with and removes the slip casting subassembly and conveniently be stock subassembly and bracing piece subassembly slip casting, the intensity of component has been improved, through inserting the stock subassembly in the lateral wall of foundation ditch, the excessive thick liquid hole of rethread is in the soil of pouring into this internal cement thick liquid infiltration of stock to the foundation ditch lateral wall, consolidate soil, thereby make horizontal support column firmly attached and foundation ditch side, this device provides horizontal brace power to vertical support column and horizontal support column through the bracing piece subassembly in addition, thereby the stability of foundation ditch has been kept, the foundation ditch has been avoided taking place to warp at the in-process of construction, collapse, cause the building in the foundation ditch outside to receive the influence, construction and property's security has been improved, and the cost is lower, the construction degree of difficulty is little, stability is high.
Drawings
FIG. 1 is a schematic structural diagram of a foundation pit protection and support device for construction and construction in an old city area;
FIG. 2 is an enlarged schematic view of A in a foundation pit protection and support device for construction and construction in old urban areas;
FIG. 3 is a schematic structural diagram of a support rod assembly in a foundation pit protection and support device for construction and construction in an old city area;
FIG. 4 is a partial schematic view of a anchor rod assembly of a foundation pit protection and support device for construction and construction in old urban areas;
FIG. 5 is a schematic structural view of a movable grouting component in a foundation pit protection supporting device for construction and construction in an old city area;
in the figure: 1. a vertical support column; 2. a support rod assembly; 21. supporting a tube; 22. a first through hole; 23. a third flange; 24. a connecting pipe; 25. a first flange; 26. adjusting the nut; 27. a threaded support rod; 28. grouting the through hole; 29. a second flange; 3. a transverse support column; 4. an anchor assembly; 41. an anchor body; 42. a slurry overflow hole; 43. an anchor head; 44. a limiting ring; 45. a threaded opening; 46. a nut; 5. a concave connecting block; 6. a top horizontal support column; 61. a sliding table; 7. a guiding square rod; 8. a slider; 9. a slide base; 10. grouting a straight pipe I; 11. grouting a straight pipe II; 12. a first grouting head; 13. a second grouting head; 14. a telescopic rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): referring to fig. 1-5, the present invention provides a technical solution: a foundation pit protection supporting device for construction and construction in old cities comprises a support assembly, an anchoring assembly and a movable grouting assembly, wherein the support assembly is attached to the side wall of a foundation pit and adopts a support rod assembly 2 to provide horizontal supporting force for the support assembly so as to enable the support assembly to be tightly abutted against the side wall of the foundation pit; the anchoring assembly is used for connecting the support assembly and the foundation pit; the movable grouting assembly is arranged at the top of the bracket assembly in a sliding mode so as to perform grouting reinforcement on the support rod assemblies and the anchoring assemblies.
In this embodiment, the bracket component includes that a plurality of be parallel to each other and horizontal distribution are at the horizontal support post 3 of foundation ditch lateral wall and a plurality of vertical support post 1 of embedding in the foundation ditch bottom perpendicularly, and is a plurality of between the horizontal support post 3 with a plurality of all leave the interval between the vertical support post 1, adopt bolt fixed connection between vertical support post 1 and the corresponding horizontal support post 3, every two is relative equal fixedly connected with is no less than two sets of bracing piece subassemblies 2 between the vertical support post 1, evenly distributed has multiunit stock subassembly 4 on the horizontal support post 3, and the tip of horizontal support post 3 still is provided with concave connecting block 5.
In this embodiment, the top of the horizontal support column 3 at top is provided with rather than the top horizontal support column 6 that is parallel to each other, top horizontal support column 6 is the component of an H shaped steel structure, top horizontal support column 6 adopts bolt and vertical support column 1 fixed linking to each other, evenly distributed has multiunit stock subassembly 4 on the top horizontal support column 6, and the tip of top horizontal support column 6 is provided with concave type connecting block 5, still be fixed with slip table 61 on the top horizontal support column 6, slip table 61 constitutes the spout with top horizontal support column 6 jointly for sliding connection removes the slip casting subassembly.
In this embodiment, the support rod assembly 2 includes two support tubes 21 and two connecting tubes 24, wherein one end of the support tube 21 is welded with a flange three 23, the support tube 21 is fixed on the vertical support column 1 by using the flange three 23 and a bolt, the other end of the support tube 21 is welded with a flange one 25, a plurality of through holes one 22 are distributed on a certain axis of the support tube 21, one of the through holes one 22 is used as a grouting hole, the other through hole one 22 is used as an overflow hole, one end of the connecting tube 24 is welded with a flange two 29 corresponding to the flange one 25, the other end of the connecting tube 24 is an opening, two connecting tubes 24 are placed between the two support tubes 21, the flange two 29 of the connecting tube 24 is abutted against the flange one 25 of the support tube 21, the outer surfaces of the two connecting tubes 24 are jointly sleeved with a connecting sleeve, and a plurality of threaded support rods 27 are further arranged between the, each threaded support rod 27 penetrates through the two flanges I25 and the two flanges II 29 in a sliding mode, adjusting nuts 26 are connected to two ends, close to the two flanges II 29, of each threaded support rod in a threaded mode, the vertical support columns 1 and the horizontal support columns 3 are supported in the horizontal direction through the support rod assemblies 2, the situation that the foundation pit is deformed or even collapsed due to overlarge soil pressure of the side walls of the foundation pit is avoided, when the support rod assemblies 2 are installed, the two support tubes 21 with proper lengths are selected to be fixedly connected with the two opposite vertical support columns 1 respectively according to the distance between the two side walls of the foundation pit, then the two connecting tubes 24 with proper lengths are selected to be fixedly connected with the two support tubes 21 respectively, then the two connecting tubes 24 are sleeved with connecting sleeves, it needs to be explained that the threaded support rods 27 are installed while the connecting tubes 24 are installed, and the connecting tubes 24 are, meanwhile, the supporting tube 21 is tightly abutted against the vertical supporting column 1, so that horizontal supporting force is further provided for the vertical supporting column 1, and in addition, in order to further ensure the stability of the connection between the two connecting tubes 24, a movable grouting component can be adopted for injecting grout into the grouting through hole 28.
In this embodiment, the connecting pipe 24 is provided with a second through hole as an overflow hole, and the connecting sleeve is provided with a grouting through hole 28.
In this embodiment, the anchor rod assembly 4 includes an anchor rod body 41, a limiting ring 44 is fixedly connected to one end of the anchor rod body 41, and the other end of the anchor rod body 41 is fixedly connected with an anchor head 43, one end of the outer side of the anchor rod body 41 close to the anchor head 43 and the outer side of the anchor head 43 are both provided with a plurality of grout overflow holes 42, a thread opening 45 is arranged on the outer side of one end of the limiting ring 44, a nut 46 is engaged and connected with the outer side of the thread opening 45, in the implementation, the anchor rod assembly 4 is inserted into the inner wall of the foundation pit, cement grout is injected into the anchor rod body 41 through the threaded port 45, the cement grout overflows from the grout overflow hole 42 and permeates into soil on the inner wall of the foundation pit to solidify loose soil, and simultaneously, the soil and the anchor rod assembly 4 are firmly bonded together, and at the moment, the limiting ring 44 can provide pressure for the transverse supporting column 3 and the top transverse supporting column 6 to firmly attach to the side face of the foundation pit.
In this embodiment, a plurality of the anchor rod bodies 41 respectively penetrate through the transverse support columns 3 and the top transverse support column 6 and are embedded into the side wall of the foundation pit.
In this embodiment, vertical support post 1 and horizontal support post 3 are the component of an H shaped steel structure, and the surface of vertical support post 1 and horizontal support post 3 all sprays anti-rust paint to both can improve the intensity of vertical support post 1 and horizontal support post 3, can improve the rust-resistant ability of vertical support post 1 and horizontal support post 3 again.
In this embodiment, each end of the horizontal support column 3 all adopts two concave connecting blocks 5 that the bolt fixedly connected with was placed symmetrically to can link together two or more horizontal support columns 3, make whole supporting device form a whole, improve the anti-deformation ability of foundation ditch, each end of the horizontal support column 6 in top all adopts two concave connecting blocks 5 that the bolt fixedly connected with was placed symmetrically.
In this embodiment, the movable grouting component comprises a pumping device, a guiding square rod 7 and a sliding seat 9, an expansion link 14 is arranged at one end of the guiding square rod 7, a sliding block 8 is fixed below the expansion end of the expansion link 14, another sliding block 8 is fixed at the end of the guiding square rod 7 away from the expansion link 14, the sliding block 8 is arranged in a sliding groove in a sliding manner, the sliding seat 9 is arranged on the guiding square rod 7 in a sliding manner, a cross frame is fixed on the sliding seat 9, a grouting straight pipe I10 is detachably fixed at one end of the cross frame, a grouting head I12 is fixedly communicated with the lower end of the grouting straight pipe I10, a grouting straight pipe II 11 is detachably fixed at the other end of the cross frame, a grouting head II 13 is fixedly communicated with the lower end of the grouting straight pipe II 11, and the grouting straight pipe I10 and the grouting straight pipe II 12 are both communicated with the pumping device, through the length of adjustment telescopic link 14 for two sliders 8 can be placed respectively and slide in two spouts, telescopic link 14 be the square bar can, this square bar slides and sets up in direction square bar 7, be the cavity structure at direction square bar 7 promptly, adjusts the position of removing slip casting subassembly at top horizontal support post 6 through artificial mode to and the position of slide on direction square bar 7, thereby make things convenient for the slip casting.
In the concrete implementation, firstly, a hole is drilled at the corresponding position of the side wall of the foundation pit, then, the transverse supporting column 3 is hoisted to the corresponding position of the side wall of the foundation pit through external mechanical hoisting equipment, then, the anchor rod component 4 is inserted into the hole on the side wall of the foundation pit to primarily fix the transverse supporting column 3, then, the vertical supporting column 1 is driven into the bottom of the foundation pit through a pile driver and is tightly attached to the transverse supporting column 3, the vertical supporting column 1 and the transverse supporting column 3 are fixed together through bolts, then, the supporting rod component 2 is installed, then, cement slurry is injected into the anchor rod body 41 through the threaded port 45, the cement slurry overflows from the slurry overflow hole 42 and permeates into the soil on the inner wall of the foundation pit to solidify loose soil, meanwhile, the soil is firmly bonded with the anchor rod component 4 and the transverse supporting column 3, when the depth of the foundation pit is deeper, stability is relatively poor, and when the deflection of both sides wall was great, can inject cement paste into the stay tube 21 through-hole 22 to improve the bulk strength of bracing piece subassembly, and then improve strutting arrangement's whole anti deformability.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A foundation pit protection supporting device for construction and construction in old cities comprises a support assembly, an anchoring assembly and a movable grouting assembly, and is characterized in that the support assembly is attached to the side wall of a foundation pit and adopts a support rod assembly (2) to provide horizontal supporting force for the support assembly so that the support assembly is tightly abutted against the side wall of the foundation pit; the anchoring assembly is used for connecting the support assembly and the foundation pit; the movable grouting assembly is arranged at the top of the bracket assembly in a sliding mode so as to perform grouting reinforcement on the support rod assemblies and the anchoring assemblies.
2. The foundation pit protection and support device for construction and construction of the old city area according to claim 1, wherein the support component comprises a plurality of horizontal support columns (3) which are parallel to each other and horizontally distributed on the side wall of the foundation pit and a plurality of vertical support columns (1) which are vertically embedded at the bottom of the foundation pit, a space is reserved between the plurality of horizontal support columns (3) and between the plurality of vertical support columns (1), the vertical support columns (1) are fixedly connected with the corresponding horizontal support columns (3) through bolts, at least two groups of support rod components (2) are fixedly connected between every two opposite vertical support columns (1), a plurality of groups of anchor rod components (4) are uniformly distributed on the horizontal support columns (3), and concave connecting blocks (5) are further arranged at the end parts of the horizontal support columns (3).
3. The foundation pit protection supporting device for construction of the old city area according to claim 1, wherein top cross support columns (6) parallel to each other are arranged above the top cross support columns (3), the top cross support columns (6) are members of an H-shaped steel structure, the top cross support columns (6) are fixedly connected with the vertical support columns (1) through bolts, a plurality of groups of anchor rod assemblies (4) are uniformly distributed on the top cross support columns (6), concave connecting blocks (5) are arranged at the end parts of the top cross support columns (6), sliding tables (61) are further fixed on the top cross support columns (6), and the sliding tables (61) and the top cross support columns (6) jointly form a sliding groove for sliding connection and moving of grouting assemblies.
4. The foundation pit protection and support device for construction and construction of the old city area as claimed in claim 2, wherein the support rod assembly (2) comprises two support tubes (21) and two connecting pipes (24), wherein one end of the support tube (21) is welded with a flange III (23), the support tube (21) is fixed on the vertical support column (1) by adopting the flange III (23) and bolts, the other end of the support tube (21) is welded with a flange I (25), a certain axis of the support tube (21) is distributed with a plurality of through holes I (22), one through hole I (22) is used as a grouting hole, the other through hole I (22) is used as an overflow hole, one end of the connecting pipe (24) is welded with a flange II (29) corresponding to the flange I (25), the other end of the connecting pipe is open, and two connecting pipes (24) are placed between the two support tubes (21), the utility model discloses a joint sleeve, including the flange two (29) of connecting pipe (24) and the flange one (25) of stay tube (21) support, the flange two (29) of connecting pipe (24) are leaned on the setting, two the adapter sleeve has been cup jointed jointly to the surface of connecting pipe (24), still be provided with a plurality of screw thread bracing pieces (27), every between stay tube (21) and connecting pipe (24) screw thread bracing piece (27) all slide and pass two flange one (25) and flange two (29), and be close to two equal threaded connection in its both ends of flange two (29) and have adjusting nut (26).
5. The foundation pit protection and support device for construction and construction in old cities as claimed in claim 4, wherein the connecting pipe (24) is provided with a second through hole as an overflow hole, and the connecting sleeve is provided with a grouting through hole (28).
6. The foundation pit protection supporting device for construction and construction of the old city area as claimed in claim 3, wherein the anchor rod assembly (4) comprises an anchor rod body (41), a limiting ring (44) is fixedly connected to one end of the anchor rod body (41), an anchor head (43) is fixedly connected to the other end of the anchor rod body (41), a plurality of grout overflow holes (42) are formed in one end, close to the anchor head (43), of the outer side of the anchor rod body (41) and the outer side of the anchor head (43), a threaded opening (45) is formed in the outer side of one end of the limiting ring (44), and a nut (46) is connected to the outer side of the threaded opening (45) in a meshed mode.
7. The foundation pit protection and support device for construction and construction of the old city area as claimed in claim 2, wherein a plurality of anchor rod bodies (41) are respectively inserted into the side wall of the foundation pit through the transverse support column (3) and the top transverse support column (6).
8. The foundation pit protection and support device for construction and construction of the old city area as claimed in claim 2, wherein the vertical support columns (1) and the horizontal support columns (3) are both members of an H-shaped steel structure, and the outer surfaces of the vertical support columns (1) and the horizontal support columns (3) are both sprayed with antirust paint.
9. The foundation pit protection and support device for construction and construction of the old city area as claimed in claim 2, wherein each end of the transverse support column (3) is fixedly connected with two symmetrically placed concave connecting blocks (5) by bolts, and each end of the top transverse support column (6) is fixedly connected with two symmetrically placed concave connecting blocks (5) by bolts.
10. The foundation pit protection and support device for construction and construction of the old city area according to claim 1, wherein the movable grouting component comprises a pumping device, a guiding square rod (7) and a sliding seat (9), one end of the guiding square rod (7) is provided with a telescopic rod (14), a sliding block (8) is fixed below the telescopic end of the telescopic rod (14), the end of the guiding square rod (7) far away from the telescopic rod (14) is fixed with another sliding block (8), the movable grouting component is arranged in a sliding groove in a sliding manner by adopting the sliding block (8), the sliding seat (9) is arranged on the guiding square rod (7) in a sliding manner, a cross frame is fixed on the sliding seat (9), one end of the cross frame is detachably fixed with a first grouting straight pipe (10), the lower end of the first grouting pipe (10) is fixedly communicated with a first grouting pipe (12), the other end of the cross frame is detachably fixed with a second grouting straight pipe (11), and the lower end part of the grouting straight pipe II (11) is fixedly communicated with a grouting head II (13), and the grouting straight pipe I (10) and the grouting straight pipe II (12) are both communicated with a pumping device.
CN202010249133.8A 2020-03-31 2020-03-31 A foundation ditch protection strutting arrangement for construction of old city district Pending CN111305232A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010249133.8A CN111305232A (en) 2020-03-31 2020-03-31 A foundation ditch protection strutting arrangement for construction of old city district

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010249133.8A CN111305232A (en) 2020-03-31 2020-03-31 A foundation ditch protection strutting arrangement for construction of old city district

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CN111305232A true CN111305232A (en) 2020-06-19

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CN112049119A (en) * 2020-08-14 2020-12-08 同济大学 Sliding type steel support erecting device
CN112281809A (en) * 2020-09-27 2021-01-29 中铁一局集团有限公司 Steel guide wall for underground continuous wall and construction method thereof
CN112281863A (en) * 2020-10-14 2021-01-29 河南城建学院 Safety protection device for excavation of building deep foundation pit

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CN105297744A (en) * 2015-11-16 2016-02-03 中国建筑第八工程局有限公司 Large foundation pit assembling type structural steel supporting system
CN206941608U (en) * 2017-07-10 2018-01-30 深圳百勤建设工程有限公司 A kind of diaphram wall foundation pit supporting construction
CN107700496A (en) * 2017-09-30 2018-02-16 中国建筑第八工程局有限公司 The inverse suitable combining construction method of deep basal pit
CN107700498A (en) * 2017-11-03 2018-02-16 中铁第勘察设计院集团有限公司 Multi-thread crossings on different level abnormal shape deep foundation pit supporting structure and its construction method
CN108824447A (en) * 2018-07-17 2018-11-16 芜湖芬特勘测服务有限公司 A kind of detachable support construction of deep basal pit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112049119A (en) * 2020-08-14 2020-12-08 同济大学 Sliding type steel support erecting device
CN112049119B (en) * 2020-08-14 2021-06-04 同济大学 Sliding type steel support erecting device
CN112281809A (en) * 2020-09-27 2021-01-29 中铁一局集团有限公司 Steel guide wall for underground continuous wall and construction method thereof
CN112281863A (en) * 2020-10-14 2021-01-29 河南城建学院 Safety protection device for excavation of building deep foundation pit

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