CN104032748B - A kind of foundation ditch angle position to support support system - Google Patents

A kind of foundation ditch angle position to support support system Download PDF

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Publication number
CN104032748B
CN104032748B CN201410257584.0A CN201410257584A CN104032748B CN 104032748 B CN104032748 B CN 104032748B CN 201410257584 A CN201410257584 A CN 201410257584A CN 104032748 B CN104032748 B CN 104032748B
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CN
China
Prior art keywords
plate
shaped steel
junction
purlin shaped
joint seat
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Expired - Fee Related
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CN201410257584.0A
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Chinese (zh)
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CN104032748A (en
Inventor
王承存
王志贵
刘正斌
王飞
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Deqing Xin De Machinery Co Ltd
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Deqing Xin De Machinery Co Ltd
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Priority to CN201410257584.0A priority Critical patent/CN104032748B/en
Publication of CN104032748A publication Critical patent/CN104032748A/en
Application granted granted Critical
Publication of CN104032748B publication Critical patent/CN104032748B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a kind of foundation ditch angle position to support support system, include in being connected with the cement diaphragm wall of foundation ditch periphery and enclose purlin shaped steel, with the interior peripheral purlin shaped steel enclosing purlin shaped steel and be connected away from cement diaphragm wall one side wing edge, enclose purlin shaped steel with interior, triangle joint seat that peripheral purlin shaped steel is connected, and by strut that strut connector is connected with triangle joint seat.Described triangle joint seat entirety is in isosceles right triangle, enclose purlin shaped steel in a part for triangle joint seat hypotenuse and foundation ditch angle position side to be bolted, described triangle joint seat hypotenuse another part encloses purlin shaped steel by the first fill block, the second fill block and the 3rd fill block with in foundation ditch angle position opposite side, peripheral purlin shaped steel is connected.

Description

A kind of foundation ditch angle position to support support system
Technical field
The invention belongs to field of civil engineering, be specifically related to the supporting and protection structure of foundation ditch.
Background technology
The mode that existing pattern foundation pit supporting structure mode mostly adopts arranges reinforced concrete fortifield village purlin in the surrounding of foundation ditch, arrange netted steel pipe support enclosing purlin inner circumferential again, when it is not enough, steel pipe consumption is large, install, remove trouble, and it is large to take up space, and is unfavorable for soil excavation in foundation ditch, can not well to foundation pit side-wall Shi Hanzhang, support strength is low, and the density usually can only arranged by increasing steel pipe increases support force; And the steel pipe of different size during different pattern foundation pit supporting structure, need be used, steel pipe repeat usage is low, causes the costly of pattern foundation pit supporting structure.
Summary of the invention
Technical problem to be solved by this invention is: the deficiency existed for prior art, a kind of sound construction is provided, installs, remove foundation ditch angle position easily to support supporting and protection structure.
For realizing the object of the present invention, be achieved by the following technical solutions: a kind of foundation ditch angle position to support support system, include in being connected with the cement diaphragm wall of foundation ditch periphery and enclose purlin shaped steel, with the interior peripheral purlin shaped steel enclosing purlin shaped steel and be connected away from cement diaphragm wall one side wing edge, enclose purlin shaped steel with interior, triangle joint seat that peripheral purlin shaped steel is connected, and by strut that strut connector is connected with triangle joint seat.
Described triangle joint seat entirety is in isosceles right triangle, and enclose purlin shaped steel in a part for triangle joint seat hypotenuse and foundation ditch angle position side and be bolted, the end of triangle joint seat hypotenuse and the end of peripheral purlin shaped steel are bolted; On cement diaphragm wall, corresponding triangle joint seat encloses position that purlin shaped steel is connected and has additional reinforcing with interior and enclose purlin shaped steel, reinforces to enclose purlin shaped steel side and be connected with cement diaphragm wall, and opposite side is connected with the interior purlin shaped steel that encloses.
Described triangle joint seat hypotenuse another part encloses purlin shaped steel by the first fill block, the second fill block and the 3rd fill block with in foundation ditch angle position opposite side, peripheral purlin shaped steel is connected.
Described strut connector includes first H profile steel in order to be connected with strut, a junction plate in order to be connected with triangle joint seat, and connects five H profile steel of the first H profile steel and junction plate; Described junction plate comprises integrated first plate body, the second plate body and the 3rd plate body, described first plate body and the second plate body perpendicular, form 151 degree of angles between second plate body and the 3rd plate body, the first plate body, the second plate body and the 3rd plate body length ratio are 3 ﹕ 6 ﹕ 2.
It is hexagonal gripper shoe that the first described fill block includes an entirety, six limits of gripper shoe are welded with successively the first side plate, the second side plate, the 3rd side plate, the 4th side plate, the 5th side plate and the 6th side plate, side plate described in each all with gripper shoe vertical welding, and each side plate is divided into symmetrical two parts with gripper shoe place plane for boundary, is welded and fixed between each adjacent described side plate; The second described side plate is made up of integrated plate a and plate b, plate a is connected with the first side plate, plate b is connected with the 3rd side plate, plate a and plate b junction outwardly, form 173 degree of angles between plate a and plate b, described gripper shoe and the limit of the second plate-side plate welding have the angle matched with the second side plate; Described first side plate and plate a, the 3rd side plate and plate b, the 3rd side plate and the 4th side plate, the 4th side plate and the 5th side plate, the 5th side plate are vertical respectively with the 6th side plate, form 97 degree of angles between described first side plate and the 6th side plate; Described second side plate, the 3rd side plate, the 4th side plate, the 5th side plate and the 6th side plate all offer connecting hole.
The second described fill block includes the supporting steel plate of a quadrangle, four limits of supporting steel plate are welded with successively the first junction plate, the second junction plate, the 3rd junction plate and the 4th junction plate, junction plate described in each all with supporting steel plate vertical welding, and each junction plate is divided into symmetrical two parts with supporting steel plate place plane for boundary, is welded and fixed between each adjacent described junction plate; The first described junction plate and the second junction plate, the 3rd junction plate is vertical respectively with the 4th junction plate, forms 97 degree of angles between described first junction plate and the 4th junction plate, forms 83 degree of angles between described second junction plate and the 3rd junction plate.
The 3rd described fill block includes the base plate that an entirety is quadrangle, and four limits of base plate are welded with side plate a, side plate b, side plate c and side plate d successively; Side plate described in each all with base plate vertical welding, and each side plate is with base plate place plane two parts symmetrical for boundary is divided into, and is welded and fixed between each adjacent described side plate; Described side plate d is made up of integrated plate body a and plate body b, and described plate body a welds with side plate a, and described plate body b welds with side plate c; Described plate body a and plate body b junction inwardly concave, and form 173 degree of angles between plate body a and plate body b; Described side plate a is vertical respectively with side plate b, plate body a, forms 99 degree of angles, form 74 degree of angles between described side plate c and plate body b between described side plate b and side plate c; Described side plate a, side plate b, side plate c and side plate d all offer connecting hole.
Two right-angle sides of the first plate body of the junction plate of described strut connector and the second plate body and triangle joint seat are bolted; 4th side plate of described first fill block, the 6th side plate respectively with interiorly enclose purlin shaped steel, reinforce the end of enclosing purlin shaped steel and be bolted, inside enclose purlin shaped steel and be bolted by bolt and the 5th side plate near the side of end; Purlin shaped steel is enclosed and peripheral purlin shaped steel end is bolted in the plate a of described second side plate and opposite side; The plate b of described second side plate and the first junction plate of the second fill block are bolted, second junction plate of the second fill block is connected by the hypotenuse of bolt and the triangle joint seat position near end, 4th junction plate is connected with the sidewall of peripheral purlin shaped steel near end by bolt, and the plate body a of the 3rd junction plate and the 3rd fill block side plate d is bolted; The side plate a of the 3rd fill block is bolted by the side of bolt and peripheral purlin shaped steel, and the 3rd plate body of side plate c and strut connector upper junction plate is bolted, and the plate body b of side plate d and the end of triangle joint seat hypotenuse are bolted.
Compared with prior art, the invention has the beneficial effects as follows: described strut connector facilitates the triangle joint seat of standard shape and the connection of strut, the first described fill block, the second fill block, the 3rd fill block coordinate with triangle joint seat, triangle joint seat is firmly connected with the purlin shaped steel that encloses of foundation ditch angle position, and to foundation ditch reflex angle, stable support action is played at place.For the supporting of other structure foundation ditch after other section bar except strut connector and fill block is all recyclable, the rate of recovery is high, reduces the cost of pattern foundation pit supporting structure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the syndeton schematic diagram of strut connector and adjacent profiles.
Fig. 3 is the structural representation of strut connector.
Fig. 4, Fig. 5 are the structural representations of junction plate.
Fig. 6 is the structural representation of the first fill block.
Fig. 7 is the structural representation of the second fill block.
Fig. 8 is the structural representation of the 3rd fill block.
1, cement diaphragm wall; 2, purlin shaped steel is enclosed in reinforcing; 3, purlin shaped steel is enclosed in; 4, peripheral purlin shaped steel; 5, triangle joint seat; 6, strut connector; 60, triangle gusset plate; 61, the first H profile steel; 62, the second H profile steel; 63, the 3rd H profile steel; 64, the 4th H profile steel; 65, the 5th H profile steel; 66, the 6th H profile steel; 67, junction plate; 671, the first plate body; 672, the second plate body; 673, the 3rd plate body; 68, the first gusset plate; 69, the second gusset plate; 7, the first fill block; 70, gripper shoe; 71, the first side plate; 72, the second side plate; 721, plate a; 722, plate b; 73, the 3rd side plate; 74, the 4th side plate; 75, the 5th side plate; 76, the 6th side plate; 77, the first stiffener; 78, the second stiffener; 8, the second fill block; 80, supporting steel plate; 81, the first junction plate; 82, the second junction plate; 83, the 3rd junction plate; 84, the 4th junction plate; 9, the 3rd fill block; 90, base plate; 91, side plate a; 92, side plate b; 93, side plate c; 94, side plate d; 941, plate body a; 942, plate body b; 95, gusset plate; 10, strut.
Detailed description of the invention
With reference to the accompanying drawings the specific embodiment of the present invention is made a detailed explanation below.
According to shown in Fig. 1 to Fig. 8, a kind of foundation ditch angle position described in the present embodiment to support support system, include in being connected with the cement diaphragm wall 1 of foundation ditch periphery and enclose purlin shaped steel 3, with the interior peripheral purlin shaped steel 4 enclosing purlin shaped steel and be connected away from cement diaphragm wall one side wing edge, enclose purlin shaped steel with interior, triangle joint seat 5 that peripheral purlin shaped steel is connected, and by strut 10 that strut connector 6 is connected with triangle joint seat.
Described triangle joint seat entirety is in isosceles right triangle, and enclose purlin shaped steel in a part for triangle joint seat hypotenuse and foundation ditch angle position side and be bolted, the end of triangle joint seat hypotenuse and the end of peripheral purlin shaped steel are bolted; On cement diaphragm wall, corresponding triangle joint seat encloses position that purlin shaped steel is connected and has additional reinforcing with interior and enclose purlin shaped steel 2, reinforces to enclose purlin shaped steel side and be connected with cement diaphragm wall 1, and opposite side is connected with the interior purlin shaped steel 3 that encloses.
Described triangle joint seat 5 hypotenuse another part encloses purlin shaped steel 3 with the 3rd fill block 9 with in foundation ditch angle position opposite side by the first fill block 7, second fill block 8, peripheral purlin shaped steel 4 is connected.
Described strut connector 6 includes the junction plate 67 of the first H profile steel 61, in order to be connected with triangle joint seat in order to be connected with strut, and connects five H profile steel of the first H profile steel and junction plate; Described junction plate comprises integrated first plate body 671, second plate body 672 and the 3rd plate body 673, described first plate body and the second plate body perpendicular, form 151 degree of angles between second plate body and the 3rd plate body, the first plate body, the second plate body and the 3rd plate body length ratio are 3 ﹕ 6 ﹕ 2; 43 degree of angles are formed between described first plate body and the first H profile steel; Be connected with between described first H profile steel and the 3rd plate body and be connected with the 3rd H profile steel 63 between the second H profile steel 62, first H profile steel and the second plate body and be connected with the 5th H profile steel 65 and the 6th H profile steel 66 between the 4th H profile steel 64, first H profile steel and the 3rd plate body; The end, one end of described second H profile steel, the 3rd H profile steel, the 4th H profile steel, the 5th H profile steel and the 6th H profile steel is fixedly welded with the edge of a wing of the first H profile steel, and the web of the 3rd H profile steel, the 4th H profile steel, the 5th H profile steel and the 6th H profile steel is all vertical with the web of the first H profile steel; The angle of 83 degree is formed between described second H profile steel and the first H profile steel; The first gusset plate 68 is fixedly welded with between described second H profile steel, the 3rd H profile steel, the 4th H profile steel, first gusset plate is with the first H profile steel parallel near the first H profile steel, the second gusset plate 69 is fixedly welded with between described second H profile steel, the 3rd H profile steel, second gusset plate is near the 3rd plate body, and the second gusset plate is parallel with the first gusset plate; Triangle gusset plate 60 is also welded with between described 3rd plate body and the second H profile steel; On the described first H profile steel edge of a wing outwardly and junction plate evenly offers organize connecting hole more.
It is hexagonal gripper shoe that the first described fill block 7 includes an entirety, six limits of gripper shoe are welded with successively the first side plate 71, second side plate 72, the 3rd side plate 73, the 4th side plate 74, the 5th side plate 75 and the 6th side plate 76, side plate described in each all with gripper shoe vertical welding, and each side plate is divided into symmetrical two parts with gripper shoe place plane for boundary, is welded and fixed between each adjacent described side plate; The second described side plate is made up of integrated plate a721 and plate b722, plate a is connected with the first side plate, plate b is connected with the 3rd side plate, plate a and plate b junction outwardly, form 173 degree of angles between plate a and plate b, described gripper shoe and the limit of the second plate-side plate welding have the angle matched with the second side plate; Described first side plate and plate a, the 3rd side plate and plate b, the 3rd side plate and the 4th side plate, the 4th side plate and the 5th side plate, the 5th side plate are vertical respectively with the 6th side plate, form 97 degree of angles between described first side plate and the 6th side plate; The first stiffener 77 and the second stiffener 78 is connected between the plate a of the 4th side plate, the 5th side plate junction and the first side plate, the second side plate, first stiffener, the second stiffener also weld with gripper shoe, first stiffener and the first side plate perpendicular, the plate a of the second stiffener and the second side plate is perpendicular; Described second side plate, the 3rd side plate, the 4th side plate, the 5th side plate and the 6th side plate all offer connecting hole.
The second described fill block 8 includes the supporting steel plate 80 of a quadrangle, four limits of supporting steel plate are welded with successively the first junction plate 81, second junction plate 82, the 3rd junction plate 83 and the 4th junction plate 84, junction plate described in each all with supporting steel plate vertical welding, and each junction plate is divided into symmetrical two parts with supporting steel plate place plane for boundary, is welded and fixed between each adjacent described junction plate; The first described junction plate and the second junction plate, the 3rd junction plate is vertical respectively with the 4th junction plate, forms 97 degree of angles between described first junction plate and the 4th junction plate, forms 83 degree of angles between described second junction plate and the 3rd junction plate.
The 3rd described fill block 9 includes the base plate 90 that an entirety is quadrangle, and four limits of base plate are welded with side plate a91, side plate b92, side plate c93 and side plate d94 successively; Side plate described in each all with base plate vertical welding, and each side plate is with base plate place plane two parts symmetrical for boundary is divided into, and is welded and fixed between each adjacent described side plate; Described side plate d is made up of integrated plate body a941 and plate body b942, and described plate body a welds with side plate a, and described plate body b welds with side plate c; Described plate body a and plate body b junction inwardly concave, and form 173 degree of angles between plate body a and plate body b; Described side plate a is vertical respectively with side plate b, plate body a, forms 99 degree of angles, form 74 degree of angles between described side plate c and plate body b between described side plate b and side plate c; Described side plate a, side plate b, side plate c and side plate d all offer connecting hole; Be connected with three groups of parallel gusset plates 95 between described side plate a and side plate c, form 74 degree of angles between gusset plate and side plate a, between gusset plate and side plate c, form 65 degree of angles.
Two right-angle sides of the first plate body of the junction plate of described strut connector and the second plate body and triangle joint seat are bolted; 4th side plate of described first fill block, the 6th side plate respectively with interiorly enclose purlin shaped steel, reinforce the end of enclosing purlin shaped steel and be bolted, inside enclose purlin shaped steel and be bolted by bolt and the 5th side plate near the side of end; Purlin shaped steel is enclosed and peripheral purlin shaped steel end is bolted in the plate a of described second side plate and opposite side; The plate b of described second side plate and the first junction plate of the second fill block are bolted, second junction plate of the second fill block is connected by the hypotenuse of bolt and the triangle joint seat position near end, 4th junction plate is connected with the sidewall of peripheral purlin shaped steel near end by bolt, and the plate body a of the 3rd junction plate and the 3rd fill block side plate d is bolted; The side plate a of the 3rd fill block is bolted by the side of bolt and peripheral purlin shaped steel, and the 3rd plate body of side plate c and strut connector upper junction plate is bolted, and the plate body b of side plate d and the end of triangle joint seat hypotenuse are bolted.
During installation, first install reinforcing enclose purlin shaped steel, in enclose purlin shaped steel, peripheral purlin shaped steel, first fill block, the second fill block and the 3rd fill block are then installed successively, successively triangle joint seat, strut connector are installed again, finally between two strut connectors of foundation ditch two opposite faces, some groups of struts are installed.Then be reversed during dismounting.

Claims (1)

1. a foundation ditch angle position to support support system, it is characterized in that: include in being connected with the cement diaphragm wall of foundation ditch periphery and enclose purlin shaped steel, with the interior peripheral purlin shaped steel enclosing purlin shaped steel and be connected away from cement diaphragm wall one side wing edge, enclose purlin shaped steel with interior, triangle joint seat that peripheral purlin shaped steel is connected, and by strut that strut connector is connected with triangle joint seat;
Described triangle joint seat entirety is in isosceles right triangle, and enclose purlin shaped steel in a part for triangle joint seat hypotenuse and foundation ditch angle position side and be bolted, the end of triangle joint seat hypotenuse and the end of peripheral purlin shaped steel are bolted; On cement diaphragm wall, corresponding triangle joint seat encloses position that purlin shaped steel is connected and has additional reinforcing with interior and enclose purlin shaped steel, reinforces to enclose purlin shaped steel side and be connected with cement diaphragm wall, and opposite side is connected with the interior purlin shaped steel that encloses;
Described triangle joint seat hypotenuse another part encloses purlin shaped steel by the first fill block, the second fill block and the 3rd fill block with in foundation ditch angle position opposite side, peripheral purlin shaped steel is connected;
Described strut connector includes first H profile steel in order to be connected with strut, a junction plate in order to be connected with triangle joint seat, and connects five H profile steel of the first H profile steel and junction plate; Described junction plate comprises integrated first plate body, the second plate body and the 3rd plate body, described first plate body and the second plate body perpendicular, form 151 degree of angles between second plate body and the 3rd plate body, the first plate body, the second plate body and the 3rd plate body length ratio are 3 ﹕ 6 ﹕ 2;
It is hexagonal gripper shoe that the first described fill block includes an entirety, six limits of gripper shoe are welded with successively the first side plate, the second side plate, the 3rd side plate, the 4th side plate, the 5th side plate and the 6th side plate, side plate described in each all with gripper shoe vertical welding, and each side plate is divided into symmetrical two parts with gripper shoe place plane for boundary, is welded and fixed between each adjacent described side plate; The second described side plate is made up of integrated plate a and plate b, plate a is connected with the first side plate, plate b is connected with the 3rd side plate, plate a and plate b junction outwardly, form 173 degree of angles between plate a and plate b, described gripper shoe and the limit of the second plate-side plate welding have the angle matched with the second side plate; Described first side plate and plate a, the 3rd side plate and plate b, the 3rd side plate and the 4th side plate, the 4th side plate and the 5th side plate, the 5th side plate are vertical respectively with the 6th side plate, form 97 degree of angles between described first side plate and the 6th side plate; Described second side plate, the 3rd side plate, the 4th side plate, the 5th side plate and the 6th side plate all offer connecting hole;
The second described fill block includes the supporting steel plate of a quadrangle, four limits of supporting steel plate are welded with successively the first junction plate, the second junction plate, the 3rd junction plate and the 4th junction plate, junction plate described in each all with supporting steel plate vertical welding, and each junction plate is divided into symmetrical two parts with supporting steel plate place plane for boundary, is welded and fixed between each adjacent described junction plate; The first described junction plate and the second junction plate, the 3rd junction plate is vertical respectively with the 4th junction plate, forms 97 degree of angles between described first junction plate and the 4th junction plate, forms 83 degree of angles between described second junction plate and the 3rd junction plate;
The 3rd described fill block includes the base plate that an entirety is quadrangle, and four limits of base plate are welded with side plate a, side plate b, side plate c and side plate d successively; Side plate described in each all with base plate vertical welding, and each side plate is with base plate place plane two parts symmetrical for boundary is divided into, and is welded and fixed between each adjacent described side plate; Described side plate d is made up of integrated plate body a and plate body b, and described plate body a welds with side plate a, and described plate body b welds with side plate c; Described plate body a and plate body b junction inwardly concave, and form 173 degree of angles between plate body a and plate body b; Described side plate a is vertical respectively with side plate b, plate body a, forms 99 degree of angles, form 74 degree of angles between described side plate c and plate body b between described side plate b and side plate c; Described side plate a, side plate b, side plate c and side plate d all offer connecting hole;
Two right-angle sides of the first plate body of the junction plate of described strut connector and the second plate body and triangle joint seat are bolted; 4th side plate of described first fill block, the 6th side plate respectively with interiorly enclose purlin shaped steel, reinforce the end of enclosing purlin shaped steel and be bolted, inside enclose purlin shaped steel and be bolted by bolt and the 5th side plate near the side of end; Purlin shaped steel is enclosed and peripheral purlin shaped steel end is bolted in the plate a of described second side plate and opposite side; The plate b of described second side plate and the first junction plate of the second fill block are bolted, second junction plate of the second fill block is connected by the hypotenuse of bolt and the triangle joint seat position near end, 4th junction plate is connected with the sidewall of peripheral purlin shaped steel near end by bolt, and the plate body a of the 3rd junction plate and the 3rd fill block side plate d is bolted; The side plate a of the 3rd fill block is bolted by the side of bolt and peripheral purlin shaped steel, and the 3rd plate body of side plate c and strut connector upper junction plate is bolted, and the plate body b of side plate d and the end of triangle joint seat hypotenuse are bolted;
During installation, first install reinforcing enclose purlin shaped steel, in enclose purlin shaped steel, peripheral purlin shaped steel, first fill block, the second fill block and the 3rd fill block are then installed successively, successively triangle joint seat, strut connector are installed again, finally between two strut connectors of foundation ditch two opposite faces, some groups of struts are installed.
CN201410257584.0A 2014-06-10 2014-06-10 A kind of foundation ditch angle position to support support system Expired - Fee Related CN104032748B (en)

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CN201410257584.0A CN104032748B (en) 2014-06-10 2014-06-10 A kind of foundation ditch angle position to support support system

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CN104032748B true CN104032748B (en) 2016-01-27

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0559728A (en) * 1991-08-28 1993-03-09 Maeda Corp Sheathing work above underground structure
CN201649104U (en) * 2009-12-09 2010-11-24 北京市新发京建工贸有限公司 Steel purlin suit and steel purlin for subway foundation pit support
CN102505696A (en) * 2011-10-28 2012-06-20 上海建瓴工程咨询有限公司 Support system of rear support removing type section steel-concrete double-enclosing-purlin foundation pit and construction method
CN203373751U (en) * 2013-07-25 2014-01-01 浙江博雷重型机床制造有限公司 Triangular surrounding purlin for inner supporting system for foundation pit supporting
CN203905008U (en) * 2014-06-10 2014-10-29 德清鑫德机械有限公司 Diagonal brace supporting structure for superior angle of foundation pit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0559728A (en) * 1991-08-28 1993-03-09 Maeda Corp Sheathing work above underground structure
CN201649104U (en) * 2009-12-09 2010-11-24 北京市新发京建工贸有限公司 Steel purlin suit and steel purlin for subway foundation pit support
CN102505696A (en) * 2011-10-28 2012-06-20 上海建瓴工程咨询有限公司 Support system of rear support removing type section steel-concrete double-enclosing-purlin foundation pit and construction method
CN203373751U (en) * 2013-07-25 2014-01-01 浙江博雷重型机床制造有限公司 Triangular surrounding purlin for inner supporting system for foundation pit supporting
CN203905008U (en) * 2014-06-10 2014-10-29 德清鑫德机械有限公司 Diagonal brace supporting structure for superior angle of foundation pit

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