AU2019452705A1 - Foundation reinforcement structure and method for hoisting heavy equipment close to unclosed building - Google Patents
Foundation reinforcement structure and method for hoisting heavy equipment close to unclosed building Download PDFInfo
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- AU2019452705A1 AU2019452705A1 AU2019452705A AU2019452705A AU2019452705A1 AU 2019452705 A1 AU2019452705 A1 AU 2019452705A1 AU 2019452705 A AU2019452705 A AU 2019452705A AU 2019452705 A AU2019452705 A AU 2019452705A AU 2019452705 A1 AU2019452705 A1 AU 2019452705A1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
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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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
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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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
- E02D5/08—Locking forms; Edge joints; Pile crossings; Branch pieces
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Abstract
Disclosed are a foundation reinforcement structure and method for hoisting heavy equipment close to an unclosed building. Said structure and method solve the problem in the prior art in which the hoisting of a crane may generate lateral earth pressure on an unclosed building, and have the beneficial effect of being able to effectively transfer the hoisting load of a crane, thus preventing the hoisting load of heavy equipment from having a negative impact on a nearby unclosed building. The solution therefor is as follows: a foundation reinforcement structure for hoisting heavy equipment close to an unclosed building, comprising vertically disposed steel sheet piles which are divided into two rows, the two rows of steel sheet piles being provided on left and right sides of a side wall of an unclosed building in a foundation pit, respectively; a first connecting member, the two rows of steel sheet piles being connected by means of the first connecting member, and the first connecting member being layered and provided with several layers; several steel pipe lattice column structures disposed between the two rows of steel sheet piles, the steel pipe lattice column structures also being vertically disposed for vertical force transmission; and backfill soil, which is filled between the two rows of steel sheet piles and the steel pipe lattice columns layer by layer.
Description
Technical Field
The present invention relates to the technical field of equipment hoisting, and particularly relates to a foundation reinforcement structure and method for heavy equipment hoisting close to a non-closed building.
Related Art
Heavy-duty equipment hoisting close to a building main body structure is mostly carried out after the construction of the building main body structure is completed. In a complex environment of cross construction, before the building main body structure is formed into an overall closed structure due to the influence of various factors, for example, in metro station construction engineering, a shield tunneling machine is high in mass, and needs to be hoisted from a shield receiving end. In this case, a deep foundation pit excavated for slope putting has not been backfilled, and there are deep foundation pits that are not backfilled around the non-closed building. That is, there is no reinforced foundation around the main body of the building. Hoisting equipment is directly installed through backfilling soil. On one hand, the risk in hoisting safety is directly increased if the backfill soil has a quality problem. On the other hand, the hoisting equipment generates, through the backfill soil, a certain lateral pressure on the building that has not been completed in construction in the hoisting process, and the lateral pressure will generate adverse effects on the non-closed building: cracks may be possibly produced in the building; the service life of the building main body structure that has not been completed in construction may even be affected; and disastrous consequences would be caused in severe cases.
In order to overcome the deficiencies in the prior art, the present invention provides a foundation reinforcement structure for heavy equipment hoisting close to a non-closed building. A temporary retaining wall can be disposed around backfill soil to improve the stability of the backfill soil; a force transmission component is formed through steel tube columns, and a stress of a crane on the backfill soil is transmitted to an underground rock formation, so as to reduce the adverse effect of a formation lateral pressure generated by a hoisted load on a non-closed station main body structure.
A specific solution of the foundation reinforcement structure for heavy equipment hoisting close to a non-closed building is as follows:
The foundation reinforcement structure for heavy equipment hoisting close to the non closed building includes:
vertically arranged steel sheet piles, which are divided into two rows, the two rows of steel sheet piles are respectively arranged on left and right sides of a side wall of the non closed building in a foundation pit;
first connecting pieces, the two rows of steel sheet piles are connected through the first connecting pieces, and the first connecting pieces are layered into a plurality of layers;
a plurality of steel tube lattice column structures arranged between the two rows of steel sheet piles, the steel tube lattice column structures are also vertically disposed to perform force transmission in a vertical direction; and
backfill soil, filled between the two rows of steel sheet piles hierarchically, the height of the backfill soil is lower than tops of the steel tube lattice column structures.
The above-mentioned foundation reinforcement structure is overall formed into a reliable reinforced foundation. The two rows of steel sheet piles are reliably connected via the first connecting pieces. As such, a temporary retaining wall is built on a side wall of the building in a longitudinal direction of the foundation pit, which effectively improves the stress stability of the backfill soil. The steel tube lattice columns can be used as force transmission components, so that a stress of hoisting equipment, such as a crane, arranged at the top of the backfill soil on the backfill soil can be transmitted to a rock formation at a lower part of the foundation pit by means of the steel tube lattice columns, thereby effectively avoiding a lateral pressure generated by the hoisting equipment on the non-closed building structure in the hoisting process.
Further, in order to facilitate the arrangement of the steel sheet piles, bottoms of the steel sheet piles on each row are inserted into the soil at the bottom of the foundation pit, so that the arrangement of the first connecting pieces can be effectively facilitated, and it is conductive to improving the stress stability of the steel sheet piles.
Further, the steel sheet piles include a plurality of mutually fastened Larsen sheets, the Larsen sheets have U-shaped sections. The mutually fastened Larsen sheets are conductive to improving the bending strength of the steel sheet piles.
Further, the first connecting pieces are steel wire ropes; two ends of the steel wire ropes are respectively connected to first I-shaped steel arranged on outer sides of the steel sheet piles; the number of layers of the steel wire ropes is the same as the number of layers of the first I-shaped steel; and the Larsen sheets are provided with open pores for facilitating the steel wire ropes to pass through. By means of the arrangement of the first I-shaped steel, the two ends of the steel wire ropes are convenient to fix, and the stability of stress on the Larsen sheets is improved. The first I-shaped steel is transversely disposed and perpendicular to the Larsen sheets.
Further, each steel tube lattice column structure includes at least one steel tube, the steel tube is filled with concrete, thereby enhancing the strength of the steel tube lattice column; the bottom of the steel tube lattice column structure is provided with a first steel sheet; the first steel sheet is supported by the bottom surface of the foundation pit; the top of the steel tube lattice column structure is provided with a second steel sheet; and two adjacent steel tubes in each steel tube lattice column structure are connected through a second connecting piece.
Further, the second connecting pieces are second I-shaped steel; a plurality of rows of second connecting pieces are arranged between two adjacent steel tubes; and the second I shaped steel is transversely disposed and perpendicular to the arrangement direction of the steel tubes.
Further, in order to further improve the arrangement reliability of the second steel sheets, the second steel sheets are in welded connection with the steel tubes; similarly, the first steel sheets are welded to the bottom ends of the steel tubes; the dimensions of both the first steel sheets and the second steel sheets are greater than the dimensions of the steel tubes in the corresponding steel tube lattice column structures; and concrete pouring holes are reserved in the second steel sheets.
Further, each steel tube lattice column structure includes three steel tubes; the three steel tubes are arranged at three points forming an equilateral triangle, which is conductive to improving the stability of the steel tube lattice column structure; a grouting pipe is arranged among the steel tubes; the grouting pipe is a sleeve valve pipe, the length of the grouting pipe meets the grouting requirement; center positions of the three steel tubes are consistent with center positions of supporting legs of a crane such as a truck-mounted crane.
Further, at least four steel tube lattice column structures are provided, and the four steel tube lattice column structures are arranged at four points forming a rectangle. Center positions of the four steel tube lattice column structures are consistent with center positions of fully extending supporting legs of the truck-mounted crane, so that stress of the supporting legs of the truck-mounted crane on a foundation can be effectively transmitted downwards, and the lateral force generated by the hoisting equipment is dispersively transmitted to the rock formation at the bottom of the foundation pit.
Further, concrete reinforcement layers are arranged at tops of the backfill soil and the steel tube lattice column structures; the concrete reinforcement layers include steel fabrics; the lower steel fabrics among the steel fabrics are attached to the second steel sheets, which is conductive to connecting the concrete reinforcement layers to the steel tube lattice column structures to form a whole; square boxes for supporting the supporting legs of the truck mounted crane are placed on surfaces of the concrete reinforcement layers corresponding to the second steel sheets.
The present invention further provides a reinforcement method for a foundation reinforcement structure for heavy equipment hoisting close to a non-closed building (part of the top is closed, and part of the top is not closed), which includes the following content:
arranging first steel sheets on a bottom surface of a foundation pit, vertically arranging steel tubes of steel tube lattice column structures, and a gap between adjacent steel tube lattice column structures are set according to a set distance;
arranging one row of steel sheet piles on each of two sides (the left side and the right side) of a side wall of the non-closed building in the foundation pit;
connecting the two rows of steel sheet piles by means of arranging first connecting pieces, the first connecting pieces are layered, and gradually backfilling soil between the two rows of steel sheet piles in the process of layering thefirst connecting pieces; and
when the soil is backfilled to the tops of the steel tubes, arranging second steel sheets at the tops of the steel tubes, backfilling the soil, and rolling the soil till the elevation at a specified compactness is consistent with that of the second steel sheets.
By the reinforcement method for the foundation reinforcement structure for heavy equipment hoisting close to the non-closed building, the stable foundation reinforcement structure can be arranged, so that the safety of the non-closed building is guaranteed, and the risk in hoisting safety in a standing region of the hoisting equipment possibly caused by the backfill quality of the foundation pit is also avoided.
Compared with the prior art, the present invention has the following beneficial effects:
1) By means of the arrangement of the overall foundation reinforcement structure, the stability of the foundation reinforcement structure can be fully improved, and the risk in hoisting safety in the standing region of the hoisting equipment possibly caused by the backfill quality of the foundation pit is effectively avoided; and moreover, the force transmission mode of the foundation reinforcement structure can avoid the lateral pressure of a hoisted load on the building and ensure the safety of the non-closed building.
2) By means of the arrangement of the steel sheet pile structures and thefirst connecting pieces of the present invention, not only the lateral retaining wall for the backfill soil is formed, but also the strength and the stability of the backfill soil in the transverse direction are improved.
3) By means of the arrangement of the steel tube lattice column structures of the present invention, as a vertical force transmission structure, the steel tube lattice column structures can transmit the hoisted load to a force retention rock formation at the bottom of the foundation pit, so as to avoid the lateral pressure of the hoisted load on the building, thereby improving the vertical stability of the foundation structure.
The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary examples of the present invention and descriptions thereof are used to explain the present invention, and do not constitute an improper limitation of the present invention.
Fig. 1 is a schematic cross-sectional diagram of a current situation of a station and a foundation pit in embodiments of the present invention;
Fig. 2 is a schematic cross-sectional diagram of crane foundation treatment in embodiments of the present invention;
Fig. 3 is a schematic horizontal-plane diagram of crane foundation treatment in embodiments of the present invention;
Fig. 4 is a schematic cross-sectional diagram of a retaining wall in embodiments of the present invention;
Fig. 5 is a schematic horizontal diagram of a retaining wall in embodiments of the present invention;
Fig. 6 is a schematic planar diagram of a steel tube lattice column structure in embodiments of the present invention;
Fig. 7 is a schematic side diagram of a steel tube lattice column structure in embodiments of the present invention; and
Fig. 8 is a top view of a crane in embodiments of the present invention.
In the drawings: 1: concrete reinforcement layer; 2: backfill soil; 3: truck-mounted crane; 4: temporary storage platform; 5: crawler crane; 6: station main body structure; 7: steel sheet pile; 8: steel tube; 9: sleeve valve grouting tube; 10: steel wire rope; 11: bubble brick; 12: back pressure earthwork; 13: first I-shaped steel; 14: concrete; 15: second I-shaped steel; 16: first steel sheet; 17: second steel sheet; 18: square box; 19: supporting leg of truck-mounted crane.
It should be pointed out that the following detailed descriptions are all illustrative and are intended to provide further descriptions of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those usually understood by a person of ordinary skill in the art to which the present disclosure belongs.
It should be noted that the terms used herein are merely used for describing specific implementations, and are not intended to limit exemplary implementations of the present disclosure. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise. In addition, it should further be understood that terms "comprise" and/or "include" used in this specification indicate that there are features, steps, operations, devices, components, and/or combinations thereof.
As described in the background art, there are deficiencies in the prior art. In order to solve the above technical problems, the present invention provides a foundation reinforcement structure for heavy equipment hoisting close to a non-closed building. The present invention is further described below with reference to the accompanying drawings in the description.
In a typical implementation of the present invention, as shown in Fig. 1, the masses of largest pieces of a shield tunneling machine for a rail transit project are: 130 t for a front shield and 120 t for a middle shield, which need to be hoisted. A receiving end main body structure of a shield receiving station is only completed for about 30 m, and a closed overall structure is not formed. A foundation pit is 20 min depth. A foundation pit of the station is three-stage slope-putting excavation. A second stage of slope-putting platform is 1 m higher than a roof of a second basement floor of the station, and a first basement floor of the station is 8.5 m in height. A soil coverage thickness is designed to be 4 m for the roof of the station. There is a foundation pit around the station, so that hoisting construction of shield tunneling machine parts cannot be carried out according to a conventional hoisting method.
In order to hoist the shield equipment inside a non-closed station, a 350t crawler crane 5 is arranged at the top of the station; the crawler crane 5 hoists the shield equipment to a temporary storage platform 4 at the lateral part of the crawler crane; and then, a crane, such as a 500t truck-mounted crane 3, arranged at the lateral part of the station hoists the shield equipment. The truck-mounted crane needs to stand in a certain planar space, otherwise the truck-mounted crane cannot get in and get out or carry out the hoisting work in the foundation pit. Therefore, the present embodiment provides a foundation reinforcement structure for heavy equipment hoisting close to a non-closed building. The structure includes vertically disposed steel sheet piles 7, first connecting pieces, a plurality of steel tube lattice column structures and backfill soil 2. The steel sheet piles 7 are divided into two rows, which are respectively arranged on the left and right sides of a side wall of an end of a non-closed station in a foundation pit. The two rows of steel sheet piles 7 are connected through the first connecting pieces, and the first connecting pieces are layered into a plurality of layers. The steel tube lattice column structures which are arranged between the two rows of steel sheet piles 7 are also vertically disposed to perform force transmission in a vertical direction. The backfill soil 2 which is filled between the two rows of steel sheet piles 7 hierarchically has a height lower than the tops of the steel tube lattice column structures.
In order to facilitate the arrangement of the steel sheet piles, the bottoms of the steel sheet piles 7 on each row are inserted into the soil at the bottom of the foundation pit, so that sand bags are arranged at a position close to a side wall of a station main body structure 6 not less than 2 m to avoid the adverse effect on the station structure caused by piling of the steel sheet piles; earthwork is backfilled between the steel sheet piles and the side wall of the station main body structure; waterproofing work is carried out on the side wall of the station main body filled with the earthwork according to the structural requirements of the station, and earthwork is backfilled after bubble bricks 11 are laid; the steel sheet piles 7 include a plurality of mutually fastened Larsen sheets, and the Larsen sheets have U-shaped sections; the mutually fastened Larsen sheets are conductive to improving the bending strength of the steel sheet piles 7. The first connecting pieces are divided into multiple layers and multiple columns for connection to the Larsen sheets on two sides. In some embodiments, back pressure earthwork 12 is arranged on outer sides of the steel sheet piles at one side or two sides of the steel sheet piles according to conditions of a surrounding environment of actual construction, which contributes to improving the stability of the steel sheet piles.
The first connecting pieces are steel wire ropes 10. As shown in Fig. 4 and Fig. 5, two ends of the steel wire ropes 10 are respectively connected to first I-shaped steel 13 arranged on the outer sides of the steel sheet piles 7; the number of layers of the steel wire ropes 10 is the same as the number of layers of the first I-shaped steel 13; and the Larsen sheets are provided with open pores for facilitating the steel wire ropes to pass through. By means of the arrangement of the first I-shaped steel 13, the two ends of the steel wire ropes 10 arefixed. The first I-shaped steel is transversely disposed and perpendicular to the Larsen sheets. The two ends of the steel wire ropes 10 are fixed by rope clips. After one end of each steel wire rope 10 and the first I-shaped steel 13 are connected and fixed with the rope clip, the other end of the steel wire rope bypasses the first I-shaped steel 13, and is then tightened with a euphroe and fixed with the rope clip.
Each steel tube lattice column structure includes at least one steel tube 8, the steel tube 8 is filled with concrete, thereby enhancing the strength of the steel tube lattice column. In some embodiments, the bottom of the steel tube lattice column structure is provided with a first steel sheet 16; the first steel sheet 16 is supported by a bottom surface of the foundation pit; the top of the steel tube lattice column structure is provided with a second steel sheet 17; and two adjacent steel tubes 8 in each steel tube lattice column structure are connected through a second connecting piece. The second connecting pieces are second I-shaped steel 15; a plurality of rows of second connecting pieces are arranged between two adjacent steel tubes; and the second I-shaped steel 15 is transversely disposed and perpendicular to the arrangement direction of the steel tubes 8.
Further, in some embodiments, as shown in Fig. 2, concrete reinforcement layers 1 are arranged on the tops of the steel tube lattice column structures and the backfill soil. The concrete reinforcement layers 1 form an organic unity with the second steel sheets 17 and the steel tube lattice column structures, which further improves the strength of the foundation reinforcement structure and plays a role in transmitting a hoisted load to a rock formation at the bottom of the foundation pit.
Each first steel sheet 16 is a thick steel sheet of 1000 x 1000 x 20 mm, and each second steel sheet 17 is a thick steel sheet of 1000 x 1000 x 20 mm; the second steel sheet 17 has a concrete pouring hole of p200 mm reserved in the center; and the height of each steel tube is the same as the height of the backfill soil. Square boxes 18 are arranged at positions on the upper parts of the concrete reinforcement layers and corresponding positions of the steel tube lattice columns, so as to facilitate uniform transmission of the hoisted load. Three steel tubes 8 are transversely reliably welded with 20# I-shaped steel to form the steel tube lattice columns; and there are no less than four sleeve valve grouting pipes ofP50 pre-buried between the steel tubes 8. Concrete is poured into the steel tubes 8 through pouring holes while the concrete reinforcement layers are poured. After the strength of the concrete reinforcement layers reaches 50% or above, static pressure grouting is carried out on the sleeve valve pipes to further improve the compactness of the soil among the steel tubes.
In order to further improve the installation reliability of the second steel sheets 17, the second steel sheets 17 are in welded connection with the steel tubes 8, and similarly, the first steel sheets 16 are welded to the bottom ends of the steel tubes 8. Each steel tube lattice column structure includes three steel tubes 8. As shown in Fig. 6 and Fig. 7, the three steel tubes 8 are arranged at three points forming an equilateral triangle. The three steel tubes 8 are arranged to form an equilateral triangle, with a center distance of 1.5 m. Further, at least four steel tube lattice column structures are provided, the four steel tube lattice column structures are arranged at four points forming a rectangle and thus are consistent with the center positions of four fully extending supporting legs of hoisting equipment such as a truck mounted crane, so that stress of the supporting legs of the truck-mounted crane on the foundation can be effectively transmitted downwards, and the hoisted load generated by the hoisting equipment is downwards transmitted to a force retention layer at the bottom of the foundation pit.
The above-mentioned foundation reinforcement structure is overall formed into a reinforced foundation which is stable in strength. The two rows of steel sheet piles are reliably connected via the first connecting pieces. As such, two temporary retaining walls are built in a longitudinal direction of the foundation pit. The two retaining walls, the side wall of the building and a slope of the foundation pit form a closed space. The space is backfilled with soil, and the stability of the backfill soil is effectively improved. The steel tube lattice columns can be used as force transmission components, so that a stress of the hoisting equipment, such as a crane, arranged at the top of the backfill soil on the backfill soil can be transmitted to a rock formation at the lower part of the foundation pit by means of the steel tube lattice columns, thereby effectively avoiding a lateral pressure generated by the hoisting equipment on the building structure in the hoisting process.
The present invention further provides a reinforcement method for a foundation reinforcement structure for heavy equipment hoisting close to a non-closed building, which includes the following content:
1) A standing region and a surrounding space for a 500t truck-mounted crane are cleaned up; the height of soil to be backfilled, an excavated side slope and a back pressure range of the side slope are confirmed; and the volume of earthwork is confirmed.
2) According to a radius of rotation of the 500t truck-mounted crane determined by a shield hoisting solution and a standing space position requirement, in combination with the outline dimension of the 500t truck-mounted crane and a planar size of the fully extending supporting legs, a planar center distance of the four fully extending supporting legs is determined; paying off is carried out according to sizes of square boxes padded under the supporting legs to accurately determine the size of a standing plane of the 500t truck-mounted crane.
3) A boundary of a foundation to be reinforced is lined out according to the determined standing space range of the 500t truck-mounted crane; steel sheet piles are piled at a lineation position; sand bags are stacked within a range not less than 2 m close to a station main body structure to replace the steel sheet piles to avoid the adverse effect of the piling of the steel sheet piles on the station structure; and back pressure earthwork 12 is appropriately backfilled to the outer sides of the steel sheet piles to improve the stability of the soil on the outer sides of the steel sheet piles.
According to actual conditions of the construction site, the design requirements of a construction plan and actual surrounding conditions of the project, as shown in Fig. 3, the "back pressure earthwork 12" region, i.e., a region on the north side of the steel sheet pile construction site, is backfilled with part of the soil to further improve the stress stability of the steel sheet piles.
4) The construction is completed on the station main body structure 6 according to the station main body waterproofing requirement; construction of a station main body structure protection layer is completed within a backfill height range according to the design requirements; and acceptance is carried out according to the requirements of the design plan.
5) A bearing capacity condition of the original ground is detected according to the determined standing position of the 500t truck-mounted crane, and it is confirmed, according to a detection result, whether to carry out reinforcement. Several thick steel sheets of 1000 x 1000 x 20 mm are laid and reliably fixed within the determined standing range according to the determined reinforcement plan; a steel tube of y609 x 16 mm is reliably welded in the center of each steel sheet; the steel tubes are arranged according to three points of an equilateral triangle, and the perpendicularity needs to be ensured to meet the design requirements.
6) 20# I-shaped steel is welded among the three steel tubes of P609 according to a designed gap to manufacture steel tube lattice columns; one sleeve valve grouting pipe of p50 is arranged on the outer side of each steel tube of y609; one sleeve valve grouting pipe of p50 is arranged in the center positions of the three steel tubes; and the sleeve valve grouting pipes are reliably fixed and protected to ensure that the sleeve valve grouting pipes are not destroyed during soil backfilling.
7) After the manufacturing of the steel tube lattice columns is completed, it is re-checked to confirm the consistency between the sizes of the center positions of the plurality of steel tube lattice columns and the planar center sizes of the fully extending supporting legs of the 500t truck-mounted crane and to check fixing of the steel tube lattice columns and fixing and protection of the sleeve valve pipes.
8) The soil is backfilled layer by layer to the inner sides of the steel tube lattice columns according to the design requirements, and is compacted according to the design requirements, and the compactness is detected; after it is detected that the compactness of the first layer of backfill soil meets the requirement, the first I-shaped steel is placed on the outer sides of the steel sheet piles according to the design requirements; the first I-shaped steel on both sides are connected with steel wire ropes of p20; the first I-shaped steel and the steel wire ropes at one end are fixed with fasteners; and the steel wire ropes at the other end are tightened with a euphroe after being threaded and then are fixed with fasteners.
9) The soil is backfilled and rolled according to the requirements of the step 8), and the steel wire ropes 10 are placed according to a designed elevation. The height of the backfill soil 2 can be 4m according to the designed backfill requirement; and the compactness is detected again after the soil backfilling is completed. During soil compaction, it is necessary to prevent the steel tube lattice columns from being hit, and at the same time, the displacements of the sand bags at positions close to the station main body structure 6 are monitored; the positions close to the station main body structure 6 should be lightly pressed according to the standing of the 500t truck-mounted crane and a stress condition of the hoisted load to ensure that the station main body structure 6 is not affected by an external lateral pressure; and the inner sides of the steel sheet piles on both sides within 1 m should be rolled according to a pressure of the design requirements.
10) After the soil backfilling is completed, the tops of all the steel tubes 8 of the steel tube lattice columns are welded with second steel sheets of 1000 x 1000 x 20 mm; concrete pouring holes of p 2 0 0 mm are reserved in the centers of the steel sheets; the second steel sheets are consistent with the backfill soil in height; steel bars are colligated above the standing region, i.e., the backfill soil, of the truck-mounted crane; the steel bars at the upper parts of the steel tube lattice columns are located at the upper parts of the second steel sheets; during colligation of the steel bars, the preserved sleeve valve pipes should be protected from being damaged; after the steel bars are colligated on the outer side, concrete reinforcement layers 1 are constructed, and concrete is poured into the steel tubes 8 at the same time and ensured to be well vibrated; the concrete reinforcement layers 1 and the steel tube lattice columns form an overall force transmission structure, so that the hoisted load of the 500t truck-mounted crane is transmitted to a mudstone retention layer at the lower part of the foundation pit through the crane supporting legs, the square boxes, the concrete reinforcement layers, and the steel tube lattice columns.
11) After being poured, the concrete reinforcement layers are maintained according to the technical requirements; when the strength is not less than 50% of the design requirements; the sleeve valve grouting pipes are pre-buried for static pressure grouting, so as to improve the compactness of the soil among the steel tube lattice columns, and the grouting pressure should not be greater than 4 bar.
12) After a concrete slab reaches the designed strength, shield equipment hoisting construction is started. The 500t truck-mounted crane enters the site, stands according to the standing requirement, and is installed with balance weights; lifting appliances and locks are checked for completion of acceptance; and the truck-mounted crane carries out hoisting of corresponding equipment.
The foregoing descriptions are merely preferred embodiments of the present invention, but are not intended to limit the present invention. A person skilled in the art may make various alterations and variations to the present invention. Any modification, equivalent replacement, or improvement made and the like within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A foundation reinforcement structure for heavy equipment hoisting close to a non closed building, comprising:
vertically arranged steel sheet piles, divided into two rows, the two rows of steel sheet piles being respectively arranged on left and right sides of the non-closed building in a foundation pit;
first connecting pieces, the two rows of steel sheet piles being connected through the first connecting pieces, and the first connecting pieces being layered into a plurality of layers;
a plurality of steel tube lattice column structures arranged between the two rows of steel sheet piles, the steel tube lattice column structures also being vertically disposed to perform force transmission in a vertical direction; and
backfill soil, filled between the two rows of steel sheet piles hierarchically, a height of the backfill soil being lower than tops of the steel tube lattice column structures.
2. The foundation reinforcement structure for heavy equipment hoisting close to the non-closed building according to claim 1, wherein bottoms of the steel sheet piles on each row are inserted into the soil at the bottom of the foundation pit.
3. The foundation reinforcement structure for heavy equipment hoisting close to the non-closed building according to claim 1, wherein the steel sheet piles comprise a plurality of mutually fastened Larsen sheets, and the Larsen sheets have U-shaped sections.
4. The foundation reinforcement structure for heavy equipment hoisting close to the non-closed building according to claim 1, wherein the first connecting pieces are steel wire ropes; and two ends of the steel wire ropes are respectively connected to first I-shaped steel arranged on outer sides of the steel sheet piles.
5. The foundation reinforcement structure for heavy equipment hoisting close to the non-closed building according to claim 1, wherein each steel tube lattice column structure comprises at least one steel tube, the steel tube is filled with concrete; the bottom of the steel tube lattice column structure is provided with a first steel sheet; the top of the steel tube lattice column structure is provided with a second steel sheet; and two adjacent steel tubes in each steel tube lattice column structure are connected through a second connecting piece.
6. The foundation reinforcement structure for heavy equipment hoisting close to the non-closed building according to claim 5, wherein the second connecting pieces are second I-shaped steel; a plurality of rows of second connecting pieces are arranged between two adjacent steel tubes; the second steel sheets are in welded connection with the steel tubes; and concrete pouring holes are reserved in the second steel sheets.
7. The foundation reinforcement structure for heavy equipment hoisting close to the non-closed building according to claim 1, wherein concrete reinforcement layers are arranged at tops of the backfill soil and the steel tube lattice column structures.
8. The foundation reinforcement structure for heavy equipment hoisting close to the non-closed building according to claim 5, wherein each steel tube lattice column structure comprises three steel tubes; the three steel tubes are arranged at three points forming an equilateral triangle; and grouting pipes are arranged among the steel tubes.
9. The foundation reinforcement structure for heavy equipment hoisting close to the non-closed building according to claim 5, wherein at least four steel tube lattice column structures are provided, the four steel tube lattice column structures are arranged at four points forming a rectangle; and center positions of the four steel tube lattice column structures are consistent with center positions of fully extending supporting legs of a crane.
10. A reinforcement method for the foundation reinforcement structure for heavy equipment hoisting close to the non-closed building according to any one of claims 1 to 9, comprising the following content:
arranging first steel sheets on a bottom surface of a foundation pit, and vertically arranging steel tubes of steel tube lattice column structures, a gap between adjacent steel tube lattice column structures being set according to a set distance;
arranging one row of steel sheet piles on each of two sides of a side wall of the non closed building in the foundation pit; connecting the two rows of steel sheet piles by means of arranging first connecting pieces, the first connecting pieces being layered, and gradually backfilling soil between the two rows of steel sheet piles in a process of layering thefirst connecting pieces; and when the soil is backfilled to tops of the steel tubes, arranging second steel sheets at the tops of the steel tubes, arranging steel bars at an upper part of the backfill soil and tops of the second steel sheets, pouring a concrete slab, and pouring concrete into the steel tubes.
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| CN201910584848.6 | 2019-07-01 | ||
| CN201910584848.6A CN110306524B (en) | 2019-07-01 | 2019-07-01 | Foundation reinforcing structure and method for hoisting heavy equipment close to unsealed building |
| PCT/CN2019/110664 WO2021000444A1 (en) | 2019-07-01 | 2019-10-11 | Foundation reinforcement structure and method for hoisting heavy equipment close to unclosed building |
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| AU2019452705A1 true AU2019452705A1 (en) | 2021-10-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324077A (en) * | 2022-10-13 | 2022-11-11 | 山东飞鸿建设集团有限公司 | Foundation pit protection structure with lattice column supports |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110306524B (en) * | 2019-07-01 | 2020-12-18 | 济南轨道交通集团有限公司 | Foundation reinforcing structure and method for hoisting heavy equipment close to unsealed building |
| CN113202107A (en) * | 2021-05-18 | 2021-08-03 | 青海送变电工程有限公司 | Intelligent device for excavating all-terrain deep foundation pit |
| CN113882348B (en) * | 2021-09-01 | 2023-02-14 | 武汉市政工程设计研究院有限责任公司 | Method for pre-reinforcing soft soil body of deep soft soil deep foundation pit |
| CN113931228B (en) * | 2021-10-21 | 2023-01-10 | 中天建设集团有限公司 | Material platform construction method for basement construction |
| CN113982035B (en) * | 2021-10-25 | 2023-06-30 | 中国建筑一局(集团)有限公司 | Beam-column conversion structure in reverse construction method and construction method thereof |
| CN115217114B (en) * | 2022-06-24 | 2024-01-16 | 深圳市工勘岩土集团有限公司 | Construction method of foundation pit rescue back pressure platform |
| CN115262584A (en) * | 2022-09-07 | 2022-11-01 | 中国建筑第八工程局有限公司 | Construction method for closing subway deep foundation pit by bins in advance |
| CN115749346A (en) * | 2022-11-04 | 2023-03-07 | 中建八局第二建设有限公司 | Garage roof load dispersion construction method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102009007931A1 (en) * | 2009-02-06 | 2010-08-12 | Soiltec Gmbh | Substructure for buildings |
| CN106168031A (en) * | 2016-08-26 | 2016-11-30 | 上海市政工程设计研究总院（集团）有限公司 | A kind of functional steel sheet-pile cofferdam |
| CN206110140U (en) * | 2016-10-26 | 2017-04-19 | 杭州市电力设计院有限公司 | A vertical solid that adds that is used for weak soil foundation ditch to put slope excavation greatly |
| CN107083774A (en) * | 2017-04-17 | 2017-08-22 | 浙江中成建工集团有限公司 | Multiple-layer horizontal connects double steel sheet piling pit supporting construction and its construction method |
| CN109723062A (en) * | 2019-01-18 | 2019-05-07 | 济南轨道交通集团有限公司 | Heave-load device hanging apparatus and hanging method based on proximity deep foundation pit construction environment |
| CN110306524B (en) * | 2019-07-01 | 2020-12-18 | 济南轨道交通集团有限公司 | Foundation reinforcing structure and method for hoisting heavy equipment close to unsealed building |
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2019
- 2019-07-01 CN CN201910584848.6A patent/CN110306524B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324077A (en) * | 2022-10-13 | 2022-11-11 | 山东飞鸿建设集团有限公司 | Foundation pit protection structure with lattice column supports |
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| CN110306524A (en) | 2019-10-08 |
| WO2021000444A1 (en) | 2021-01-07 |
| CN110306524B (en) | 2020-12-18 |
| AU2019452705B2 (en) | 2023-04-06 |
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