CN112854236A - Foundation pit construction prestressed profile steel support pile - Google Patents
Foundation pit construction prestressed profile steel support pile Download PDFInfo
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- CN112854236A CN112854236A CN202110003169.2A CN202110003169A CN112854236A CN 112854236 A CN112854236 A CN 112854236A CN 202110003169 A CN202110003169 A CN 202110003169A CN 112854236 A CN112854236 A CN 112854236A
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- supporting
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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
- 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
- E02D5/16—Auxiliary devices rigidly or detachably arranged on sheet piles for facilitating assembly
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- General Engineering & Computer Science (AREA)
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- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention relates to a prestressed steel supporting pile for foundation pit construction, which comprises steel sheet piles, supporting transverse columns, supporting longitudinal columns, outer supporting units, corner supporting units and middle supporting units, wherein both sides of each steel sheet pile are arranged in a J shape, the steel sheet piles are arranged in a staggered manner in a positive and negative way and are connected through J-shaped structures, the supporting transverse columns are symmetrically arranged between the front side and the rear side of each steel sheet pile, the supporting longitudinal columns are symmetrically arranged between the left side and the right side of each steel sheet pile, the supporting longitudinal columns and the supporting transverse columns are connected with the steel sheet piles through the outer supporting units, the supporting longitudinal columns and the supporting transverse columns are connected through the corner supporting units, and the supporting transverse columns are connected through the middle supporting units; the invention can solve the problems existing in the process of installing the support piles between the upper ends of the steel sheet piles in a welding mode: the steel sheet pile is supported by the support pile unevenly; the efficiency of installing or taking off the support column between the support transverse column and the support longitudinal column is low.
Description
Technical Field
The invention relates to the field of foundation pit support, in particular to a prestressed profile steel support pile for foundation pit construction.
Background
The method comprises the steps of deep stirring cement soil enclosure walls, high-pressure jet grouting piles, bored piles, reinforced concrete sheet piles, steel plate steel piles and the like; the steel sheet pile is a steel structure with locking notch and may be combined freely to form continuous and compact retaining or water blocking wall. The common forms include Larson type, Lakevanna type, etc. Its advantage does: the strength is high, and the soil can be easily driven into a hard soil layer; the construction can be carried out in deep water, and an inclined support is added to form a surrounding cage if necessary. The waterproof performance is good; the cofferdams with various shapes can be formed according to the requirement and can be repeatedly used, so that the cofferdams have wide application;
before steel sheet piles are used for construction, generally, required construction positions need to be measured and paid off, the construction position precision is ensured, positioning devices and mounting frames are installed for construction, so that the construction positions are limited, the following steel sheet piles are prevented from being tilted, then the steel sheet piles are inserted into the positioning frames, then excavation or drainage operation is carried out on the inner sides of the steel sheet piles, support piles made of steel section steel are installed between the inner sides of the steel sheet piles, the support piles are installed on the inner sides of the steel sheet piles to support the steel sheet piles, the problems that the upper ends of the steel sheet piles are deformed inwards and the like can be avoided, the strength between the steel sheet piles can be improved, the using effect of the steel sheet piles can be improved, and therefore, the support piles are used for supporting the upper ends of the inserted and driven steel sheet piles, and the construction method is particularly important;
the existing in-process is through adopting the welded mode to install a fender pile between inserting the steel sheet pile inboard after beating, because of a fender pile including supporting the spreader and supporting vertical column and support column, support the spreader and support vertical column welding inboard at the steel sheet pile earlier usually, will support the stake welding again and support between the spreader and support vertical column, nevertheless use the welded mode to insert the in-process of installing a fender pile between the steel sheet pile upper end after beating to have following problem usually:
1. because the steel sheet piles are channel steel which is in positive and negative lap joint arrangement, the supporting transverse column and the supporting longitudinal column only can support the inner side of the steel sheet pile which is connected with the supporting transverse column and is arranged in the positive direction, but can not support the steel sheet pile which is not connected with the supporting transverse column and is arranged in the reverse direction, so that the supporting force applied to the steel sheet pile which is not in direct contact with the supporting transverse column and the supporting longitudinal column is smaller, the stress of the steel sheet pile is uneven, the supporting effect of the supporting pile on the supporting transverse column and the supporting longitudinal column is reduced, and the steel sheet pile is easy to bend and deform due to uneven stress;
2. before the supporting pile is welded on the inner sides of the supporting transverse column and the supporting longitudinal column, large-scale expanding equipment is needed to be adopted to perform expanding and abutting between the supporting transverse column and the supporting longitudinal column, and then the supporting column is welded in the process of abutting between the supporting transverse column and the supporting longitudinal column, so that the supporting column can play a good supporting effect, but the cost of using the large-scale expanding equipment is increased, and the efficiency of installing the supporting column between the supporting transverse column and the supporting longitudinal column is reduced in the process of welding the supporting column;
3. when the support column is taken off from supporting the spreader and supporting between the vertical column, need cutting type machinery to cut its welding position and just can take off the support column to reduced the efficiency of taking off from supporting the spreader and supporting between the vertical column with the support column, and cut welding department and also enough reduced the life of support column, increased the purchasing cost of construction unit to the support column.
Disclosure of Invention
In order to solve the problems, the invention provides a prestressed steel support pile for foundation pit construction, which comprises steel sheet piles, support transverse columns, support longitudinal columns, outer support units, corner support units and a middle support unit, wherein the steel sheet piles are of a v-21274structure, the two sides of each steel sheet pile are arranged in a J shape, the steel sheet piles are arranged in a staggered manner in a positive-negative mode and are connected through the J-shaped structures, the steel sheet piles are distributed in a rectangular manner, the support transverse columns are symmetrically arranged between the front side and the rear side of each steel sheet pile, the support longitudinal columns are symmetrically arranged between the left side and the right side of each steel sheet pile, the support longitudinal columns and the support transverse columns are connected with the steel sheet piles through the outer support units, the support longitudinal columns are connected with the support transverse columns through the corner support units, and the support transverse columns are connected through the middle support units;
the outer supporting unit comprises fixed blocks, sliding inner blocks, sliding outer blocks, an extrusion inserting plate and an extrusion top plate, the fixed blocks are uniformly arranged on the outer side surfaces of the supporting cross posts, the inner sides of the fixed blocks positioned on the left and right sides of the supporting cross posts on the outer side surfaces of the supporting cross posts are arranged, the left and right sides of the fixed blocks except the fixed blocks on the left and right sides of the supporting cross posts are provided with the sliding inner blocks in a sliding fit manner, the sliding inner blocks are positioned on the left and right sides of the steel sheet piles arranged in the reverse direction, the sliding outer blocks are arranged on the left and right sides of the outer ends of the fixed blocks in a sliding fit manner, the sliding outer blocks positioned on the left and right sides of the fixed blocks and the sliding inner blocks are positioned on the inner sides of the steel sheet piles arranged in the forward;
the turning support unit include one-way connecting seat, two-way connecting seat, first tight pole and the first screw thread section of thick bamboo of supporting, the equal symmetry in support spreader left and right sides is provided with one-way connecting seat, support and indulge post middle part inboard and all be provided with two-way connecting seat, and the spread groove has all been seted up to both sides around the equal and two-way connecting seat in the one-way connecting seat outside, and the spread groove inboard all is provided with first tight pole of supporting, be located the support spreader and be located and support between the upstand first tight pole of supporting all be connected with screw-thread fit's mode through the first screw thread section of thick bamboo, and the screw thread direction of the left and right.
As a preferred technical scheme of the invention, the middle supporting unit comprises square connecting seats, second abutting rods, second threaded cylinders and cross-bracing branched chains, the square connecting seats are symmetrically arranged on the inner sides of the middle parts of the supporting cross columns in a bilateral mode, connecting circular grooves are formed in the inner sides of the square connecting seats, the second abutting rods are arranged in the connecting circular grooves, the second abutting rods positioned on the front side and the rear side of each supporting longitudinal column are connected in a threaded fit mode through the second threaded cylinders, the thread directions of the front side and the rear side of the inner side of each second threaded cylinder are arranged in a reverse mode, and the cross-bracing branched chains are arranged between the second threaded cylinders.
As a preferred technical solution of the present invention, the cross-brace branched chain includes a support block, a third support rod and a third threaded cylinder, the support block is disposed on the front and rear sides of the second threaded cylinder through a rotational fit, the third support rods are disposed on the inner sides of the support blocks on the left and right sides of the support cross-brace, the third support rods on the left and right sides of the support cross-brace are connected through the third threaded cylinder in a threaded fit manner, and the thread directions on the front and rear sides of the inner side surface of the third threaded cylinder are in reverse arrangement.
As a preferable technical scheme of the invention, rubber sealing rings are arranged at openings at two sides of the first threaded cylinder, the second threaded cylinder and the third threaded cylinder.
As a preferred technical scheme of the invention, the connecting grooves are internally provided with rotating connecting plates in a rotating fit manner, and the rotating connecting plates are detachably clamped and matched with the first abutting rods.
As a preferable technical scheme of the invention, the second abutting rod and the connecting circular groove as well as the third abutting rod and the abutting block are in detachable clamping fit.
The invention has the beneficial effects that:
the invention can solve the following problems in the process of installing a support pile between the upper ends of inserted and driven steel sheet piles in a welding mode: a. because the steel sheet piles are channel steel which is in positive and negative lap joint arrangement, the supporting transverse column and the supporting longitudinal column only can support the inner side of the steel sheet pile which is connected with the supporting transverse column and is arranged in the positive direction, but can not support the steel sheet pile which is not connected with the supporting transverse column and is arranged in the reverse direction, so that the supporting force applied to the steel sheet pile which is not in direct contact with the supporting transverse column and the supporting longitudinal column is smaller, the stress of the steel sheet pile is uneven, the supporting effect of the supporting pile on the supporting transverse column and the supporting longitudinal column is reduced, and the steel sheet pile is easy to bend and deform due to uneven stress; b. before the supporting pile is welded on the inner sides of the supporting transverse column and the supporting longitudinal column, large-scale expanding equipment is needed to be adopted to perform expanding and abutting between the supporting transverse column and the supporting longitudinal column, and then the supporting column is welded in the process of abutting between the supporting transverse column and the supporting longitudinal column, so that the supporting column can play a good supporting effect, but the cost of using the large-scale expanding equipment is increased, and the efficiency of installing the supporting column between the supporting transverse column and the supporting longitudinal column is reduced in the process of welding the supporting column; c. when the supporting column needs to be taken down from between the supporting transverse column and the supporting longitudinal column, the supporting column can be taken down only by cutting the welding part of the supporting column by a cutting machine, so that the efficiency of taking the supporting column from between the supporting transverse column and the supporting longitudinal column is reduced, the service life of the supporting column is also reduced by cutting the welding part, and the purchase cost of a construction unit to the supporting column is increased;
the inner sides of the steel sheet piles which are not connected with the supporting transverse columns and the supporting longitudinal columns can be effectively supported through the outer supporting units, so that the uneven stress of the steel sheet piles can be avoided, the effect of supporting the steel sheet piles by the supporting transverse columns and the supporting longitudinal columns is improved, and the problem of bending deformation caused by the uneven stress of the steel sheet piles is avoided;
the corner supporting unit and the middle supporting unit can support the supporting transverse column and the supporting longitudinal column under the condition that the supporting transverse column and the supporting longitudinal column do not need to be expanded outwards, so that the cost increase caused by the adoption of large-scale expanding equipment is avoided, the corner supporting unit and the middle supporting unit can support the supporting transverse column and the supporting longitudinal column under the condition that welding is not needed, and the supporting efficiency of the supporting transverse column and the supporting longitudinal column is improved;
the corner supporting unit and the middle supporting unit can be taken out from the space between the supporting transverse column and the supporting longitudinal column without cutting, so that the efficiency of taking out the corner supporting unit and the middle supporting unit from the space between the supporting transverse column and the supporting longitudinal column is improved, and the service life of the corner supporting unit and the middle supporting unit can be prevented from being shortened due to cutting of a welding part.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a portion of the structure of the present invention;
FIG. 3 is a schematic view of the invention taken from direction A of FIG. 2;
FIG. 4 is a top view of the present invention;
FIG. 5 is a schematic structural view of the square connecting seat, the second tightening rod, the second threaded cylinder and the rubber sealing ring of the present invention;
FIG. 6 is a schematic view of the structure between the present invention and the ground;
in the figure, 1, steel sheet piles; 2. supporting the transverse column; 3. supporting the longitudinal columns; 4. an outer support unit; 5. a corner support unit; 5. a middle support unit; 41. a fixed block; 42. sliding the inner block; 43. sliding is carried out; 44. extruding the inserting plate; 45. extruding the top plate; 51. a one-way connecting seat; 52. a bidirectional connecting base; 53. a first abutment bar; 54. a first threaded barrel; 61. a square connecting seat; 62. a second abutment bar; 63. a second threaded barrel; 64. a cross-brace branch chain; 641. a propping block; 642. a third abutment bar; 643. a third threaded barrel; 531. the connecting plate is rotated.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
As shown in fig. 1 to 6, a prestressed steel support pile for foundation pit construction includes a steel sheet pile 1, support transverse columns 2, support longitudinal columns 3, outer support units 4, corner support units 5 and a middle support unit 6, wherein the steel sheet pile 1 is of a v-21274structure, both sides of the steel sheet pile 1 are arranged in a J shape, the steel sheet piles 1 are arranged in a staggered manner in a positive and negative direction and connected through the J-shaped structure, the steel sheet piles 1 are arranged in a rectangular manner, the support transverse columns 2 are symmetrically arranged between the front side and the rear side of the steel sheet pile 1, the support longitudinal columns 3 are symmetrically arranged between the left side and the right side of the steel sheet pile 1, the support longitudinal columns 3 and the support transverse columns 2 are connected with the steel sheet pile 1 through the outer support units 4, the support longitudinal columns 3 and the support transverse columns 2 are connected through the corner support units 5, and the support transverse columns 2 are connected through the middle support units 6;
during specific work, the steel sheet pile supporting device can uniformly support the inner side of a steel sheet pile 1, can support a space between the supporting transverse column 2 and the supporting longitudinal column 3 without welding, and can take out an article for supporting positioned between the supporting transverse column 2 and the supporting longitudinal column 3 without cutting; firstly, inserting and driving a steel sheet pile 1 through a pile driver so as to surround a rectangle with a required size, then respectively and temporarily fixing a supporting transverse column 2 and a supporting longitudinal column 3 at the inner side of the steel sheet pile 1 which is surrounded into the rectangle in a spot welding mode, then enabling the steel sheet pile 1 which is not contacted with the supporting transverse column 2 and the supporting longitudinal column 3 to be supported through an outer supporting unit 4 so as to improve the uniformity of supporting force for supporting the steel sheet pile 1, then installing a corner supporting unit 5 at the joint of the supporting transverse column 2 and the supporting longitudinal column 3, finally installing a middle supporting unit 6 between the middle parts of the supporting transverse columns 2, and needing no outward expansion abutting welding when installing the corner supporting unit 5 and the middle supporting unit 6 so as to improve the installation efficiency of the steel sheet pile, then enabling the supporting transverse column 2 and the supporting longitudinal column 3 to be supported through the corner supporting unit 5 and the middle supporting, when the corner support units 5 and the middle support unit 6 need to be taken out, they can be taken out without cutting, thereby avoiding the reduction of the service life thereof due to cutting.
The outer supporting unit 4 comprises a fixed block 41, a sliding inner block 42, a sliding outer block 43, an extrusion inserting plate 44 and an extrusion top plate 45, the fixed block 41 is uniformly arranged on the outer side surface of the supporting transverse column 2, the inner sides of the fixed blocks 41 positioned on the left side and the right side of the outer side surface of the supporting transverse column 2 are respectively provided with a plurality of extrusion inserting plates, and the left and right sides of the fixed block 41 except the fixed blocks 41 on the left and right sides thereof are provided with sliding inner blocks 42 by sliding fit, the sliding inner blocks 42 are positioned at the left side and the right side of the steel sheet pile 1 which is reversely arranged, the sliding outer blocks 43 are arranged at the left side and the right side of the outer end of the fixed block 41 in a sliding fit manner, the sliding outer 43 blocks are all positioned on the inner side of the steel sheet pile 1 arranged in the forward direction, extrusion inserting plates 44 are inserted between the sliding outer 43 blocks positioned on the left side and the right side of the fixed block 41 and between the sliding inner block 42 and the fixed block 41 in an interference fit mode, and the upper ends of the extrusion inserting plates 44 are connected with extrusion top plates 45;
when the steel sheet pile supporting device works specifically, the outer supporting unit 4 can support the steel sheet pile 1 which is not in contact with the supporting transverse column 2 and the supporting longitudinal column 3, firstly, the supporting transverse column 2 and the supporting longitudinal column 3 are arranged on the inner side of the steel sheet pile 1 which is enclosed into a rectangle in a spot welding mode, meanwhile, the sliding inner blocks 42 are arranged on the left side and the right side of the steel sheet pile 1 which is reversely arranged, the sliding outer blocks 43 are arranged on the inner side of the steel sheet pile 1 which is arranged in the forward direction, then, the extrusion top plate 45 drives the extrusion inserting plates 44 to be inserted between the sliding outer blocks 43 arranged on the left side and the right side of the fixed block 41 and between the sliding inner blocks 42 and the fixed block 41, so that the sliding inner blocks 42 and the sliding outer blocks 43 can support the steel sheet pile 1 in a propping mode, uneven stress of the steel sheet pile 1 can be avoided by supporting the steel sheet pile 1 in a propping mode, and the effect that the supporting, the problem of bending deformation caused by uneven stress of the steel sheet pile 1 is avoided.
The corner supporting unit 5 comprises a one-way connecting seat 51, a two-way connecting seat 52, a first abutting rod 53 and a first threaded cylinder 54, the left side and the right side of the supporting transverse column 2 are symmetrically provided with the one-way connecting seat 51, the inner side of the middle part of the supporting longitudinal column 3 is provided with the two-way connecting seat 52, the outer side of the one-way connecting seat 51 and the front side and the rear side of the two-way connecting seat 52 are respectively provided with a connecting groove, the inner sides of the connecting grooves are respectively provided with the first abutting rod 53, the first abutting rods 53 positioned between the supporting transverse column 2 and the supporting vertical columns are connected in a threaded fit mode through the first threaded cylinder 54, and the thread directions of the left side and the right side on the inner side;
during specific work, the corner supporting unit 5 can support the corner between the supporting transverse column 2 and the supporting longitudinal column 3; after the outer supporting unit 4 completes supporting connection between the supporting transverse column 2 and the supporting longitudinal column 3 and the steel sheet pile 1, the first abutting rod 53 is installed at two sides of the first threaded cylinder 54 in a threaded fit mode, then the first threaded cylinder 54 and the first abutting rod 53 are inserted into a connecting groove between the one-way connecting seat 51 and the two-way connecting seat 52 in a clamping fit mode, then the first threaded cylinder 54 is rotated, so that the first abutting rods 53 at two sides can simultaneously move outwards under the action of threaded fit, and the first abutting rod 53 can support and abut the supporting longitudinal column 3 and the supporting transverse column 2 through the one-way connecting seat 51 and the two-way connecting seat 52, and the first abutting rod 53 and the first threaded cylinder 54 are matched to support and abut the supporting transverse column 2 and the supporting longitudinal column 3 without welding and expanding equipment, thereby improved to supporting the spreader 2 and supporting the efficiency that supports tightly between the vertical post 3, when needs demolish first support pole 53, can make the first support pole 53 that is located its both sides inwards move simultaneously through rotating first screw thread section of thick bamboo 54, then take out first screw thread section of thick bamboo 54 and first support pole 53, make it no longer to supporting the spreader 2 and supporting and indulge and support between the post 3, thereby can avoid first support pole 53 and support spreader 2, support and just can take out and lead to reducing the life of first support pole 53 because of needing the cutting between the vertical post 3, thereby practiced thrift the cost of purchasing first support pole 53.
The connecting grooves are internally provided with rotating connecting plates 531 in a rotating matching manner, and the rotating connecting plates are detachably clamped and matched with the first abutting rods 53; in specific operation, when the first abutting rod 53 moves to both sides along with the rotation of the first threaded cylinder 54, the rotating connecting plate can rotate along with the movement of the first abutting rod 53, so that the first abutting rod 53 and the rotating connecting plate can be in a vertical state.
The middle supporting unit 6 comprises square connecting seats 61, second abutting rods 62, second threaded cylinders 63 and cross-support branched chains 64, the square connecting seats 61 are symmetrically arranged on the inner sides of the middle parts of the supporting cross columns 2 in a bilateral mode, connecting circular grooves are formed in the inner sides of the square connecting seats 61, the second abutting rods 62 are arranged in the connecting circular grooves, the second abutting rods 62 positioned on the front side and the rear side of the supporting longitudinal column 3 are connected in a threaded fit mode through the second threaded cylinders 63, the thread directions of the front side and the rear side on the inner side of each second threaded cylinder 63 are arranged in a reverse mode, and the cross-support branched chains 64 are arranged between the second threaded cylinders 63;
during specific work, the middle supporting unit 6 can support the supporting transverse columns 2; after the corner support unit 5 is installed, install second support pole 62 in second screw thread section of thick bamboo 63 both sides through screw-thread fit's mode, insert second support pole 62 again and lie in the connection circular slot that supports vertical column 3 front and back both sides, later can drive second support pole 62 through screw-thread fit and outwards remove in step through rotating second screw thread section of thick bamboo 63 to make second support pole 62 can support the middle part of supporting spreader 2.
The cross brace branched chain 64 comprises a propping block 641, a third propping rod 642 and a third threaded cylinder 643, the propping blocks 641 are arranged on the front side and the rear side of the second threaded cylinder 63 in a rotating fit manner, the third propping rods 642 are arranged on the inner sides of the propping blocks 641 on the left side and the right side of the cross brace 2, the third propping rods 642 on the left side and the right side of the cross brace 2 are connected in a thread fit manner through the third threaded cylinder 643, and the thread directions of the front side and the rear side on the inner side surface of the third threaded cylinder 643 are arranged in a reverse direction;
during the operation, the cross-brace branch chain 64 can support the second threaded cylinder 63 tightly, after the middle support unit 6 completes the support of the middle part of the support cross-brace 2, a third tightening rod 642 is installed at both sides of the third threaded cylinder 643 by screw-fitting, then, the third threaded cylinder 643 is connected with the inner side of the abutting block 641, and finally the third threaded cylinder 643 is rotated, so that the third progressive lever can abut against the second abutting lever 62 through the abutting block 641, by abutting the second abutting rod 62, the stability and effect of the second abutting rod 62 for abutting the supporting transverse column 2 and the supporting longitudinal column 3 can be increased, when the middle supporting unit 6 needs to be removed, the third resisting plate and the third threaded cylinder 643 are removed through threaded fit, then, the second tightening rod 62 and the second threaded cylinder 63 are removed, and the corner support unit 5 is removed after the removal of the wale branch chain 64 is completed.
Rubber sealing rings are arranged at openings on two sides of the first threaded cylinder 54, the second threaded cylinder 63 and the third threaded cylinder 643; during specific work, when installing first screw thread section of thick bamboo 54 and second screw thread section of thick bamboo 63 and third screw thread section of thick bamboo 643 in inserting the steel sheet pile 1 inside back of beating, the rubber seal ring can avoid earth dirt etc. to get into the screw-thread fit region, avoids receiving the jam of dirty earth etc. in the screw-thread fit region.
The second abutting rod 62 and the connecting circular groove, and the third abutting rod 642 and the abutting block 641 are detachably clamped and matched; during specific work, through detachable clamping cooperation, the second abutting rod 62 and the third abutting rod 642 can be prevented from rotating along with the rotation of the second threaded cylinder 63 and the third threaded cylinder 643, the dismounting after the use is convenient, and the cutting during the dismounting after welding is avoided.
During operation, the first step: firstly, inserting and driving a steel sheet pile 1 through a pile driver so as to surround a rectangle with a required size, then respectively and temporarily fixing a supporting transverse column 2 and a supporting longitudinal column 3 on the inner side of the steel sheet pile 1 which is surrounded into the rectangle in a spot welding mode, simultaneously enabling sliding inner blocks 42 to be positioned on the left side and the right side of the steel sheet pile 1 which is reversely arranged, enabling sliding outer blocks 43 to be positioned on the inner side of the steel sheet pile 1 which is arranged in the forward direction, then driving extrusion inserting plates 44 to be inserted between the sliding outer blocks 43 positioned on the left side and the right side of a fixed block 41 and between the sliding inner blocks 42 and the fixed block 41 through an extrusion top plate 45, and enabling the sliding inner blocks 42 and the sliding outer blocks 43 to support the steel sheet pile 1 tightly;
the second step is that: after the outer supporting unit 4 completes supporting connection between the supporting transverse column 2 and the supporting longitudinal column 3 and the steel sheet pile 1, the first abutting rod 53 is installed on two sides of the first threaded cylinder 54 in a threaded matching mode, then the first threaded cylinder 54 and the first abutting rod 53 are inserted into a connecting groove between the one-way connecting seat 51 and the two-way connecting seat 52 in a clamping matching mode, and then the first threaded cylinder 54 is rotated, so that the first abutting rods 53 on two sides of the first threaded cylinder can move outwards simultaneously under the action of threaded matching, and the first abutting rod 53 can support and abut against the supporting longitudinal column 3 and the supporting transverse column 2 through the one-way connecting seat 51 and the two-way connecting seat 52;
the third step: after the corner supporting unit 5 is installed, whether the second abutting rods 62 are installed on the two sides of the second threaded cylinder 63 in a threaded fit mode or not can be determined according to construction requirements, then the second abutting rods 62 are inserted into connecting circular grooves in the front side and the rear side of the supporting longitudinal column 3, and then the second abutting rods 62 can be driven to synchronously move outwards through the threaded fit by rotating the second threaded cylinder 63, so that the second abutting rods 62 can support the middle part of the supporting transverse column 2;
the fourth step: after the middle of the support cross-post 2 is supported, whether the third abutting rod 642 is installed on two sides of the third threaded cylinder 643 through threaded fit or not can be determined according to construction requirements, then the third threaded cylinder 643 is connected with the inner side of the abutting block 641, and finally the third threaded cylinder 643 is rotated, so that the third advancing rod can abut against the second abutting rod 62 through the abutting block 641;
the fifth step: when the middle supporting unit 6 and the corner supporting unit 5 need to be removed, the third threaded cylinder 643, the second threaded cylinder 63 and the first threaded cylinder 54 are sequentially rotated to respectively enable the third abutting rod 642, the second abutting rod 62 and the first abutting rod 53 to move inwards, then the third abutting rod, the second abutting rod and the first abutting rod 54 are taken out, finally the supporting transverse column 2 and the connecting point between the supporting longitudinal column 3 and the steel sheet pile 1 are cut off through a cutting machine, then the supporting transverse column 2 and the supporting longitudinal column 3 are taken out, and finally the steel sheet pile 1 is pulled out through a steel sheet pile 1 pile pulling machine.
According to the invention, the inner sides of the steel sheet piles 1 which are not connected with the supporting transverse columns 2 and the supporting longitudinal columns 3 can be effectively supported through the outer supporting units 4, so that the uneven stress of the steel sheet piles 1 can be avoided, the effect of supporting the steel sheet piles 1 by the supporting transverse columns 2 and the supporting longitudinal columns 3 is improved, and the problem of bending deformation caused by the uneven stress of the steel sheet piles 1 is avoided; according to the invention, the corner supporting units 5 and the middle supporting units 6 can support the supporting transverse column 2 and the supporting longitudinal column 3 without expanding the supporting transverse column and the supporting longitudinal column 3 outwards, so that the cost increase caused by adopting large-scale expanding equipment is avoided, and the corner supporting units 5 and the middle supporting units 6 can support the supporting transverse column 2 and the supporting longitudinal column 3 without welding, so that the supporting efficiency between the supporting transverse column 2 and the supporting longitudinal column 3 is improved; according to the invention, the corner supporting unit 5 and the middle supporting unit 6 can be taken out from between the supporting transverse column 2 and the supporting longitudinal column 3 without cutting, so that the efficiency of taking out the corner supporting unit from between the supporting transverse column 2 and the supporting longitudinal column 3 is improved, and the service life of the corner supporting unit and the middle supporting unit can be prevented from being reduced due to cutting of a welding part.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a foundation ditch construction prestressing force shaped steel fender pile, includes steel sheet pile (1), supports spreader (2), supports vertical column (3), outer support unit (4), turning support unit (5) and middle part support unit (6), its characterized in that: the steel sheet piles (1) are of a v-21274structure, the two sides of each steel sheet pile (1) are arranged in a J shape, the steel sheet piles (1) are arranged in a staggered manner in a positive-negative mode and are connected through the J-shaped structures, the steel sheet piles (1) are distributed in a rectangular mode, supporting transverse columns (2) are symmetrically arranged between the front side and the rear side of each steel sheet pile (1), supporting longitudinal columns (3) are symmetrically arranged between the left side and the right side of each steel sheet pile (1), the supporting longitudinal columns (3) and the supporting transverse columns (2) are connected with the steel sheet piles (1) through outer supporting units (4), the supporting longitudinal columns (3) are connected with the supporting transverse columns (2) through corner supporting units (5), and the supporting transverse columns (2) are connected through middle supporting units (6);
outer support unit (4) including fixed block (41), slip inner block (42), slip outer block (43), extrusion picture peg (44) and extrusion roof (45), evenly be provided with fixed block (41) on supporting spreader (2) lateral surface, and support and lie in fixed block (41) inboard of its left and right sides on spreader (2) lateral surface, and the left and right sides of fixed block (41) except that the fixed block (41) of its left and right sides, all be provided with slip inner block (42) through sliding fit, and slip inner block (42) all are located the reverse pile steel sheet (1) left and right sides that is provided with, the left and right sides of fixed block (41) outer end all is provided with slip outer block (43) through sliding fit, and slip outer block (43) that just is located fixed block (41) the left and right sides all insert between block (43) and slip inner block (42) and fixed block (41) and be equipped with through interference fit's mode and extrude between the outer block (43), and insert The upper end of the extrusion inserting plate (44) is connected with an extrusion top plate (45);
the corner supporting unit (5) comprises one-way connecting seats (51), two-way connecting seats (52), a first abutting rod (53) and a first threaded cylinder (54), the left side and the right side of each supporting transverse column (2) are symmetrically provided with the one-way connecting seats (51), the middle inner side of each supporting longitudinal column (3) is provided with the two-way connecting seats (52), the outer sides of the one-way connecting seats (51) and the front side and the rear side of the two-way connecting seats (52) are respectively provided with a connecting groove, the inner sides of the connecting grooves are respectively provided with the first abutting rod (53), the first abutting rods (53) between the supporting transverse columns (2) and the supporting vertical columns are connected in a threaded fit mode through the first threaded cylinders (54), and the thread directions of the left side and the right side on the inner side face of the first threaded cylinders (54).
2. The prestressed section steel support pile for foundation pit construction according to claim 1, wherein: middle part support unit (6) including square connecting seat (61), second support tight pole (62), a second screw thread section of thick bamboo (63) and stull branch chain (64), support that equal bilateral symmetry in stull (2) middle part inboard is provided with square connecting seat (61), and square connecting seat (61) inboard has all been seted up and has been connected the circular slot, and connect the circular slot and all be provided with second support tight pole (62), and be located and support between the second support tight pole (62) of indulging post (3) front and back both sides all be connected with screw-thread fit's mode through a second screw thread section of thick bamboo (63), and the screw thread direction of both sides is reverse setting around on second screw thread section of thick bamboo (63) medial surface, and be provided with stull branch chain (64) between a second screw thread section of thick bamboo (63).
3. The prestressed section steel support pile for foundation pit construction according to claim 2, wherein: the cross brace branched chain (64) comprises abutting blocks (641), third abutting rods (642) and third threaded cylinders (643), the abutting blocks (641) are arranged on the front side and the rear side of each second threaded cylinder (63) in a rotating fit mode, the third abutting rods (642) are arranged on the inner sides of the abutting blocks (641) on the left side and the right side of each support cross brace (2), the third abutting rods (642) on the left side and the right side of each support cross brace (2) are connected in a threaded fit mode through the third threaded cylinders (643), and the thread directions of the front side and the rear side on the inner side of each third threaded cylinder (643) are arranged in a reverse mode.
4. The prestressed section steel support pile for foundation pit construction according to claim 3, wherein: rubber sealing rings are arranged at openings on two sides of the first threaded cylinder (54), the second threaded cylinder (63) and the third threaded cylinder (643).
5. The prestressed section steel support pile for foundation pit construction according to claim 1, wherein: the connecting grooves are internally provided with rotating connecting plates (531) in a rotating matching mode, and the rotating connecting plates (531) are detachably clamped and matched with the first abutting rods (53).
6. The prestressed section steel support pile for foundation pit construction according to claim 3, wherein: and the second abutting rod (62) is in detachable clamping fit with the connecting circular groove and the third abutting rod (642) is in detachable clamping fit with the abutting block (641).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110003169.2A CN112854236A (en) | 2021-01-04 | 2021-01-04 | Foundation pit construction prestressed profile steel support pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110003169.2A CN112854236A (en) | 2021-01-04 | 2021-01-04 | Foundation pit construction prestressed profile steel support pile |
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| CN112854236A true CN112854236A (en) | 2021-05-28 |
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| CN202110003169.2A Withdrawn CN112854236A (en) | 2021-01-04 | 2021-01-04 | Foundation pit construction prestressed profile steel support pile |
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| CN (1) | CN112854236A (en) |
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| CN114622576A (en) * | 2022-04-12 | 2022-06-14 | 陕西省三和建设工程有限公司 | Supporting device with anti-collapse structure for pipe ditch excavation |
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