CN103572762B - The bracket of the oblique inner support lower end of foundation pit supporting construction and fabrication tool and construction method - Google Patents
The bracket of the oblique inner support lower end of foundation pit supporting construction and fabrication tool and construction method Download PDFInfo
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- CN103572762B CN103572762B CN201310535134.9A CN201310535134A CN103572762B CN 103572762 B CN103572762 B CN 103572762B CN 201310535134 A CN201310535134 A CN 201310535134A CN 103572762 B CN103572762 B CN 103572762B
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- dowel
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Abstract
The invention discloses a kind of fabrication tool of bracket of bearing diagonal lower end of foundation pit supporting construction, it comprises four pieces of side templates (1) and a soffit formwork (6), and soffit formwork (6) is provided with the through hole (8) passed for dowel; The invention also discloses the bracket that this fabrication tool manufactures, it comprises suspension ring and Duo Gen is anchored at the dowel that concrete block is stretched out in concrete block and lower end; The present invention again discloses a kind of construction method of bracket of bearing diagonal lower end of foundation pit supporting construction, and the core procedure of the method first precasts multiple concrete bracket, then is utilized bottom suspension ring handling to foundation ditch by prefabricated multiple brackets.Bracket of the present invention, fabrication tool and construction method can reduce costs, the reduction of erection time.
Description
Technical field
The present invention relates to Base hole supporting technology field, is specifically a kind of oblique bracket of inner support lower end of foundation pit supporting construction and the fabrication tool of this bracket and construction method.
Background technology
Traditional foundation pit supporting construction system comprises the corral fender pile arranged along margin of foundation pit, a circle capping beam is provided with on the stake top of each fender post, what be also provided with one or multi-channel different floor height inside each fender post encloses purlin, fender post and enclose purlin and be connected to form by each fender post of same row and go along with sb. to guard him piling wall, is provided with horizontal direction inner support in different going along with sb. to guard him between piling wall.But along with the development of foundation ditch technology, the area of foundation ditch is increasing, and the length as each direction has exceeded 100 meters, like this, the level of setting is more and more longer to inner support, and expense is more and more expensive, and stability worse and worse.Old friends propose to carry out alternative level to inner support by oblique inner support targetedly.As shown in Figure 1, its construction sequence is as follows: first arrange fender post 101 and capping beam 102 along margin of foundation pit, and in capping beam 102 the pre-buried steel plate for welding with oblique inner support 105 upper end; Again basin excavation is carried out to foundation ditch, dig the end, hole directly, excavate out up big and down small prism-frustum-shaped foundation ditch, form the triangle soil body bottom foundation ditch and between foundation ditch top edge domatic; Then at foundation ditch terrace with edge bottom surface disturbing concrete base plate 103, and along with base plate 103 one disturbing concrete bracket 104, the inclined-plane of this bracket 104 is embedded with the steel plate for welding with oblique inner support 105 lower end; The oblique inner support 105 of multiple tracks is welded between capping beam 102 with concrete floor 103; Finally, dug up by the triangle soil body of fender post 101 remaining inside part, make the upper and lower each cross sectional area of foundation ditch consistent, the operation that this excavation of foundation pit and supporting and protection structure are arranged completes.
As can be seen here, concrete bracket is the link between oblique inner support and concrete floor, and the bracket of prior art integrally waters the type of being pounded with concrete floor, and its Specific construction step is as follows: a, to lay concrete floor bed course levelling; The steel mesh reinforcement of b, colligation concrete floor; The steel mesh reinforcement of c, colligation concrete bracket is also shelved on the steel mesh reinforcement of base plate, and is welded and fixed by the steel mesh reinforcement being used for steel plate and the concrete bracket welded with inner support lower end; D, on bed course, shelve supporting steel bar through the steel mesh reinforcement of base plate; E, on supporting steel bar, set up the side template of concrete bracket, four side templates fit outward the lumps of wood stupefied and with horizontal steel tube and split bolt by stupefied for lumps of wood banding on side template, bottom side template, establish the annular spill plate of a circle level, the effect of this annular spill plate prevents the concrete watered when smashing bracket concrete around bracket from upwards rising simultaneously; F, water and smash underplate concrete and bracket concrete.
There is following defect in above-mentioned construction method: first, a bracket of often constructing needs a set of template assembly, one grip assembly comprises four pieces of side templates, many horizontal steel tubes, split bolt and the many lumps of wood stupefied, if whole foundation ditch calculates according to 120 brackets, just need 120 cover template assemblies, often overlap template assembly needs at least three supporting steel bars to support simultaneously, be exactly 360 supporting steel bars, and watering in the process of smashing, overflow to prevent bracket concrete side and emerge, also need four pieces of side template lower ends often organizing that one piece of annular spill plate is set, namely altogether need 120 pieces of annular spill plates, even if to water in three batches for cost subregion smash base plate and bracket to extend the duration, also 40 cover template assemblies are needed, 40 pieces of annular spill plates and 120 supporting steel bars, manufacturing cost is high, expense is large, and, at the construction field (site), lay supporting steel bar, set up template assembly and annular spill plate, disturbing concrete and water smash after wait for the stiff process just carrying out subsequent construction of bracket concrete, need the man-hour of at substantial, extend the overall duration.
The component 101 of the foundation pit supporting construction of prior art, fender post, 102, capping beam, 103, base plate, 104, bracket, 105, tiltedly inner support;
The bracket of the bearing diagonal lower end of foundation pit supporting construction of the present invention and component 1, the side template of fabrication tool, 2, the lumps of wood is stupefied, 3, split bolt, 4, horizontal steel tube, 5, steel work hoop frame, 6, soffit formwork, 7, dowel, 8, through hole, 9, concrete block, 10, bracket steel mesh reinforcement, 11, pre-buried iron plate, 12, suspension ring, 13, chevron nut.
Summary of the invention
The technical problem that the present invention will solve is, provides a kind of and can reduce costs, the fabrication tool of the bracket of the bearing diagonal lower end of the foundation pit supporting construction of reduction of erection time.
A technical solution of the present invention is, a kind of fabrication tool of bracket of bearing diagonal lower end of foundation pit supporting construction is provided, it comprises four pieces of side templates, many lumps of wood steel work hoop that is stupefied and that be made up of split bolt and horizontal steel tube frames, the lumps of wood stupefied by steel work hoop frame banding on side template, it also comprises a soffit formwork, and soffit formwork is provided with the through hole passed for dowel.
Another technical problem that the present invention will solve is, provides a kind of and can reduce costs, the bracket of the bearing diagonal lower end of the foundation pit supporting construction of reduction of erection time.
Another technical solution of the present invention is, a kind of bracket of bearing diagonal lower end of foundation pit supporting construction is provided, it comprises concrete block and is anchored at the bracket steel mesh reinforcement in concrete block, in concrete block, also anchoring has pre-buried iron plate, pre-buried iron plate and bracket steel mesh reinforcement are welded and fixed, pre-buried iron plate is exposed on the inclined-plane of concrete block, it also comprises suspension ring and Duo Gen is anchored at the dowel that concrete block is stretched out in concrete block and lower end, dowel and bracket steel mesh reinforcement are welded and fixed, the bar subordinate end of suspension ring is also welded and fixed with bracket steel mesh reinforcement, the ring portion of suspension ring protrudes concrete block end face.
Another technical problem that the present invention will solve is, provides a kind of and can reduce costs, the construction method of the bracket of the bearing diagonal lower end of the foundation pit supporting construction of reduction of erection time.
Another technical solution of the present invention is, provide a kind of construction method of bracket of bearing diagonal lower end of foundation pit supporting construction, its step is as follows:
A, utilize fabrication tool of the present invention to precast multiple concrete bracket, the concrete block bottom surface of this bracket is protruding with dowel and upper end is protruding with suspension ring;
B, to lay concrete floor bed course levelling;
C, colligation concrete floor steel mesh reinforcement;
D, prefabricated multiple brackets are utilized bottom suspension ring handling to foundation ditch, the dowel of bracket is inserted baseplate reinforcing bar net and is shelved on bed course;
E, water and smash underplate concrete.
Owing to have employed the fabrication tool of above-mentioned band soffit formwork, therefore the bracket that bottom surface is protruding with dowel can be precast in advance, and utilize the bracket precast to implement above-mentioned construction method, make the present invention compared with prior art, have the following advantages and effect:
First, carry out pre-manufactured steel bracket owing to have employed this fabrication tool, general employing 5 cover template assemblies, calculate to produce a bracket half an hour, work every day 8 hours, within one day, can produce 80 brackets, if whole foundation ditch needs 120 brackets, one and half just can manufacture, those 345 supporting steel bars just saved lower 115 cover template assemblies and support said modules, complete even if the bracket of whole foundation ditch is secondary in three batches, also save 35 template assemblies and 105 supporting steel bars, therefore significantly saved cost; And, because bracket is without the need to on-site pouring pound, naturally eliminates whole annular spill plates, reduce costs further; Moreover, due to bracket can construct at the scene before manufactured in advance, like this, just eliminate and place supporting steel bar at the construction field (site), set up template assembly and annular spill plate, water and smash bracket concrete and wait for the stiff process just carrying out subsequent construction of bracket concrete watering after the process of smashing completes, eliminate the step of a large amount of site operation, significantly shorten the time of site operation, have huge meaning to quickening duration process, recovery traffic above-ground early.
Accompanying drawing explanation
Fig. 1 is the side sectional structure schematic diagram (structure of foundation pit supporting construction of the present invention identical therefore no longer repeat) of the foundation pit supporting construction of prior art.
Fig. 2 is the side-looking structural representation of the fabrication tool of the bracket of the bearing diagonal lower end of foundation pit supporting construction of the present invention.
Fig. 3 is the plan structure schematic diagram of the fabrication tool of the bracket of the bearing diagonal lower end of foundation pit supporting construction of the present invention.
Fig. 4 is the side-looking structural representation of the bracket of the bearing diagonal lower end of foundation pit supporting construction of the present invention.
Fig. 5 is the partial structurtes schematic diagram in A direction in Fig. 2.
Shown in figure
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, the fabrication tool of the bracket of the bearing diagonal lower end of foundation pit supporting construction of the present invention, it comprises four pieces of side templates 1, many lumps of wood are stupefied 2, twice are made up of split bolt 3 and horizontal steel tube 4 steel work hoop frame 5 and a soffit formwork 6.The lumps of wood stupefied 2 by steel work hoop frame 5 banding on side template 1.Soffit formwork 6 is provided with the through hole 8 passed for dowel 7.Specifically, per pass steel work hoop frame 5 comprises two split bolts 3 and four horizontal steel tubes 4, four horizontal steel tubes 4 are divided into two groups, lay respectively on two pieces of side templates 1 being parallel to each other, the same one end of two horizontal steel tubes 4 often organized all is compressed by a chevron nut 13, and chevron nut 13 and one end of split bolt 3 screw, in other words, each section of split bolt 3 is all combined with a chevron nut 13, and two fasten with the horizontal steel tube 4 organized by chevron nut 13.
Utilize the bracket that this fabrication tool produces, it comprises concrete block 9, be anchored at bracket steel mesh reinforcement 10, suspension ring 12 in concrete block 9 and Duo Gen is anchored at the dowel 7 that concrete block 9 is stretched out in concrete block 9 and lower end.In concrete block 9, also anchoring has pre-buried iron plate 11, pre-buried iron plate 11 is welded and fixed with bracket steel mesh reinforcement 10, and specifically, pre-buried iron plate 11 soffit is welded with dowel, dowel welds with bracket steel mesh reinforcement 10, and pre-buried iron plate 11 is exposed on the inclined-plane of concrete block 9.Dowel 7 and bracket steel mesh reinforcement 10 are welded and fixed, and the bar subordinate end of suspension ring 12 is also welded and fixed with bracket steel mesh reinforcement 10, and the ring portion of suspension ring 12 protrudes concrete block 9 end face.
The construction method of the bracket of the bearing diagonal lower end of foundation pit supporting construction of the present invention, its step is as follows.
A, utilize fabrication tool of the present invention to precast multiple concrete bracket, concrete block 9 bottom surface of this bracket is protruding with dowel 7 and upper end is protruding with suspension ring 12.
B, the bed course laying concrete floor (identical with 103 in Fig. 1) are levelling.
C, colligation concrete floor steel mesh reinforcement.
D, prefabricated multiple brackets are utilized bottom suspension ring 12 handling to foundation ditch, the steel mesh reinforcement that the dowel 7 of bracket inserts base plate is shelved on bed course, and by dowel 7 and the colligation of baseplate reinforcing bar net.
E, water and smash underplate concrete.
Claims (2)
1. the bracket of the bearing diagonal lower end of a foundation pit supporting construction, it comprises concrete block (9) and is anchored at the bracket steel mesh reinforcement (10) in concrete block (9), in concrete block (9), also anchoring has pre-buried iron plate (11), pre-buried iron plate (11) and bracket steel mesh reinforcement (10) are welded and fixed, pre-buried iron plate (11) is exposed on the inclined-plane of concrete block (9), it is characterized in that: it also comprises a suspension ring (12) and many and is anchored at the dowel (7) that concrete block (9) are stretched out in concrete block (9) and lower end, dowel (7) and bracket steel mesh reinforcement (10) are welded and fixed, the bar subordinate end of suspension ring (12) is also welded and fixed with bracket steel mesh reinforcement (10), the ring portion of suspension ring (12) protrudes concrete block (9) end face.
2. a construction method for the bracket of the bearing diagonal lower end of foundation pit supporting construction, is characterized in that: its step is as follows:
A, utilize fabrication tool to precast multiple concrete bracket, concrete block (9) bottom surface of this bracket is protruding with dowel (7) and upper end is protruding with suspension ring (12);
The steel work hoop frame (5) that this fabrication tool comprises four pieces of side templates (1), the many lumps of wood stupefied (2) and is made up of split bolt (3) and horizontal steel tube (4), the lumps of wood stupefied (2) by steel work hoop frame (5) banding on side template (1); This fabrication tool also comprises a soffit formwork (6), and soffit formwork (6) is provided with the through hole (8) passed for dowel (7);
B, the bed course laying concrete floor are levelling;
C, colligation concrete floor steel mesh reinforcement;
D, prefabricated multiple brackets are utilized bottom suspension ring (12) handling to foundation ditch, the steel mesh reinforcement that the dowel (7) of bracket inserts base plate is shelved on bed course;
E, water and smash underplate concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310535134.9A CN103572762B (en) | 2013-11-01 | 2013-11-01 | The bracket of the oblique inner support lower end of foundation pit supporting construction and fabrication tool and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310535134.9A CN103572762B (en) | 2013-11-01 | 2013-11-01 | The bracket of the oblique inner support lower end of foundation pit supporting construction and fabrication tool and construction method |
Publications (2)
| Publication Number | Publication Date |
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| CN103572762A CN103572762A (en) | 2014-02-12 |
| CN103572762B true CN103572762B (en) | 2015-12-09 |
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| CN201310535134.9A Expired - Fee Related CN103572762B (en) | 2013-11-01 | 2013-11-01 | The bracket of the oblique inner support lower end of foundation pit supporting construction and fabrication tool and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267578B (en) * | 2018-11-09 | 2023-12-08 | 北京城建五建设集团有限公司 | Inclined plane plain concrete structure and construction method thereof |
| CN110528872B (en) * | 2019-09-06 | 2024-02-13 | 四川建筑职业技术学院 | Template supporting device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203821398U (en) * | 2013-11-01 | 2014-09-10 | 浙江万华建设有限公司 | Bracket and manufacturing tool of inner inclined support lower end of ground pit supporting structure |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203821398U (en) * | 2013-11-01 | 2014-09-10 | 浙江万华建设有限公司 | Bracket and manufacturing tool of inner inclined support lower end of ground pit supporting structure |
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Granted publication date: 20151209 Termination date: 20161101 |