CN203741996U - Beam column node for foundation pit project adopting top-down excavation method - Google Patents
Beam column node for foundation pit project adopting top-down excavation method Download PDFInfo
- Publication number
- CN203741996U CN203741996U CN201320833165.8U CN201320833165U CN203741996U CN 203741996 U CN203741996 U CN 203741996U CN 201320833165 U CN201320833165 U CN 201320833165U CN 203741996 U CN203741996 U CN 203741996U
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- column node
- plate
- beam main
- foundation pit
- main tendon
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- 238000009412 basement excavation Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 238000010276 construction Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 9
- 210000002435 tendon Anatomy 0.000 claims description 24
- 210000003205 muscle Anatomy 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 238000000465 moulding Methods 0.000 claims description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 9
- 244000046052 Phaseolus vulgaris Species 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Joining Of Building Structures In Genera (AREA)
Abstract
The utility model relates to a beam column node for a foundation pit project adopting a top-down excavation method, and belongs to the field of construction projects. The beam column node adopts a technical scheme as follows: after a foundation pit is dig below a structural beam bottom elevation, a steel ring board is welded outside a steel tube concrete column at an elevation position corresponding to a structural beam main rib; the width of the steel ring board meets the welding requirement of the structural beam main rib; the thickness of the steel ring board meets the force transmission requirement of the structural beam main rib. The structural beam main rib transmits the force to the adjacent crossed structural beam main rib via the steel ring board. According to the beam column node, the connection and force transmission of a structural beam reinforcing steel bar at the position of a beam column node in the foundation pit project adopting the top-down excavation method are successfully realized, and the difficulty of the crossing of the beam column node reinforcing steel bar, which puzzles technical personnel in the field for a long term, is solved.
Description
Technical field
The utility model belongs to fixed buildings bean column node structure, can be widely used in adopting in the base pit engineering of contrary sequence method enforcement.
Background technology
A kind of construction that contrary sequence method combines with supporting and protection structure as agent structure comprehensively, outer wall of basement combines with retaining wall, and horizontal structure member combines with horizontal struts system, and vertical structure member combines with interim column system.Contrary sequence method has synchronous construction saving major project duration, support stiffness up and down by means of it and can strictly control greatly foundation pit deformation protection of the environment, utilize agent structure can save the advantages such as construction costs as supporting; become a large hot technology of base pit engineering circle, and require to get a lot of applications in high narrow city in inner city, particularly environment sensitive, protection.
In base pit engineering of topdown construction method, vertical support system all adopts the form of steel post in conjunction with stand column pile.According to the technological requirement of contrary sequence method foundation ditch, vertical support system need be complete at ground construction before excavation of foundation pit.Therefore, basement horizontal structure is contrary does the stage, the problem that inevitably exists structural beams reinforcing bar to pass through steel post, and this problem is also a general character difficult problem in top-down method construction process.Along with accumulation and the summary of a large amount of contrary working method engineering designs and construction experience, the contrary processing method of making stage bean column node is also enriched gradually and is ripe.
The connection structure of steel post and structural beams depends on the form of column.In conventional contrary working method engineering, the most common steel post is mainly angle steel lattice column and steel core concrete column.For angle steel lattice column, common beam-column connection has boring reinforcing bar connection method, power transmission steel plate method and beam side haunch method etc.For steel core concrete column, because its cross section is real abdomen formula, the beam main tendon within its planar range all cannot pass through, and compares angle steel lattice column, and its bean column node intractability is larger.At present, common steel core concrete column bean column node processing method has twin beams node, ring beam joint etc., but two kinds of methods all have certain drawback and limitation.For example, twin beams node is only applicable to twin-spar construction system, if basement horizontal structure adopts the beam and slab structure system of single-beam, needs to readjust structure stress system, and structure design work significantly increases; Ring beam joint complex forms, difficulty of construction is higher, higher for the construction technical requirement of unit in charge of construction.
Utility model content
Technical problem to be solved in the utility model has been to provide a kind of for base pit engineering of topdown construction method beam-column node.Adopt this node, solved bean column node position reinforcing bar completely and connected the large problem of difficulty, widened the thinking of beam-column node structure beam steel connected mode, and this node has, and power transmission is clear and definite, the superiority easily of constructing.
For solving the contrary problem that stage structures beam is connected with steel core concrete column of doing, basic scheme of the present utility model is: be connected with steel core concrete column against making stage structures beam, after the extremely described structure bottom elevation of excavation of foundation pit below, in described steel core concrete column outside, the absolute altitude position weldable steel ring flat-plate corresponding with structure beam main tendon, described steel loop plate width meets the welding requirements of described structure beam main tendon, and described steel loop plate thickness need meet described structure beam main tendon power transmission requirement.
Excavation of foundation pit is to structure bottom elevation below, in steel core concrete column outside, the absolute altitude position weldable steel ring flat-plate corresponding with structure beam main tendon, steel loop plate width meets the welding requirements of described structure beam main tendon, and steel loop plate thickness need meet structure beam main tendon power transmission requirement.Structure beam main tendon by described steel loop plate by power pass to adjacent across structure beam main tendon.
?as optimization, in such scheme, if steel loop plate restricted width, can be in structural beams wide region local widening, to meet the welding requirements of structure beam main tendon.In addition, can be according to structure stress needs, between upper and lower steel loop plate, vertical interval arranges stiffening rib.
Based on above-mentioned feature, if main muscle row is greater than a row at the bottom of bean column node positional structure back, can be on the plate face of steel loop plate vertical welding reinforcing bar junction plate, structure beam main tendon is welded on the vertical side of reinforcing bar junction plate.
Based on above-mentioned feature, if bean column node position root beam is the side bar that soil outlet or structure punch, for meeting horizontal force requirement, need be according to calculating and setting lateral longitudinal muscle, now can between upper and lower steel loop plate, weld lateral longitudinal muscle junction plate, lateral longitudinal muscle is welded in the side of lateral longitudinal muscle junction plate.
Above-mentioned node has successfully been realized contrary connection and the power transmission of making base pit engineering beam-column node location structural beams reinforcing bar, has solved the difficult problem that long-term puzzlement those skilled in the art's bean column node reinforcing bar passes through.
Brief description of the drawings
Below in conjunction with accompanying drawing and example and application construction method, the utility model will be further described.
Fig. 1 is longitudinal plan of the present utility model.
Fig. 2 is drawing in side sectional elevation of the present utility model.
Fig. 3 is the longitudinal plan that reinforcing bar junction plate is set on the utility model steel loop plate.
Fig. 4 is the drawing in side sectional elevation that reinforcing bar junction plate is set on the utility model steel loop plate.
Fig. 5 is the longitudinal plan that lateral longitudinal muscle junction plate is set between the utility model steel loop plate.
Fig. 6 is the drawing in side sectional elevation that lateral longitudinal muscle junction plate is set between the utility model steel loop plate.
Detailed description of the invention
Taking circular steel tube concrete post as example, other forms of steel post all can be implemented with reference to this node.
As depicted in figs. 1 and 2, excavation of foundation pit to contrary make horizontal structure bottom elevation after, at the corresponding absolute altitude weldable steel of steel core concrete column 1 outboard structure beam main tendon 2 ring flat-plate 3, and at vertical interval, stiffening rib 4 is set, described steel loop plate 3 width meet the welding requirements of structure beam main tendon, if described steel loop plate 1 restricted width, can be in structural beams 5 width ranges local widening, described steel loop plate 3 thickness need meet the power transmission requirement of structure beam main tendon 2.After described steel loop plate 3 and stiffening rib 4 have welded, structure beam main tendon 2 is welded on steel loop plate 3, structure beam main tendon 2 can by steel loop plate 3 by power pass to adjacent across structure beam main tendon 2, efficiently solve the difficult problem that bean column node reinforcing bar passes through.Diagram is only signal, and stiffening rib 4 can be selected arrange or do not arrange according to actual loading situation.
In above-mentioned nodal basis, as shown in Figure 3 and Figure 4, structure beam main tendon 2 rows are during more than a row, can be on described steel loop plate 3 welded reinforcement junction plate 6, up-down structure beam main tendon 2 and the described reinforcing bar junction plate 6 of structural beams weld.
In above-mentioned nodal basis, as shown in Figure 5 and Figure 6, while being provided with lateral longitudinal muscle 7 within the scope of structural beams 5 deck-moldings, can between steel loop plate 3, weld lateral longitudinal muscle junction plates 8 by structural beams lateral longitudinal muscle 7 correspondence positions, lateral longitudinal muscle 7 can be welded in the side of lateral longitudinal muscle junction plate 8.
The scheme above the utility model example being provided is introduced in detail, for one of ordinary skill in the art, according to the thought of the utility model embodiment, all will change in specific embodiments and applications.In sum, this description should not be construed as restriction of the present utility model, and all any changes of making according to the utility model design philosophy are all within protection domain of the present utility model.
Claims (3)
1. one kind for base pit engineering of topdown construction method beam-column node, be connected with steel core concrete column (1) against making stage structures beam (5), it is characterized in that: excavation of foundation pit is to after described structural beams (5) end absolute altitude below, in described steel core concrete column (1) outside, the absolute altitude position weldable steel ring flat-plate (3) corresponding with structure beam main tendon (2), described steel loop plate (3) width meets described structure beam main tendon (2) welding requirements, and described steel loop plate (3) thickness need meet described structure beam main tendon (2) power transmission requirement.
2. one according to claim 1 is for base pit engineering of topdown construction method beam-column node, it is characterized in that: described structure beam main tendon (2) row is during more than a row, vertical welding reinforcing bar junction plate (6) on the plate face of described steel loop plate (3), described structure beam main tendon (2) is in the vertical side welding of described reinforcing bar junction plate (6).
3. one according to claim 1 is for base pit engineering of topdown construction method beam-column node, it is characterized in that: within the scope of described structural beams (5) deck-molding, be provided with lateral longitudinal muscle (7), lateral longitudinal muscle junction plate (8) is welded between upper and lower described steel loop plate (3), and described lateral longitudinal muscle (7) is welded in the side of described lateral longitudinal muscle junction plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320833165.8U CN203741996U (en) | 2013-12-18 | 2013-12-18 | Beam column node for foundation pit project adopting top-down excavation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320833165.8U CN203741996U (en) | 2013-12-18 | 2013-12-18 | Beam column node for foundation pit project adopting top-down excavation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203741996U true CN203741996U (en) | 2014-07-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320833165.8U Expired - Lifetime CN203741996U (en) | 2013-12-18 | 2013-12-18 | Beam column node for foundation pit project adopting top-down excavation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203741996U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628572A (en) * | 2013-12-18 | 2014-03-12 | 华东建筑设计研究院有限公司 | Project beam-column joint for reverse building method |
| CN105649217A (en) * | 2015-12-31 | 2016-06-08 | 上海建工建集团有限公司 | Profiled steel structure beam column joint for reverse construction of stiffened structure and construction method |
| CN105908755A (en) * | 2016-05-31 | 2016-08-31 | 中铁第四勘察设计院集团有限公司 | Deep foundation pit supporting structure adopting steel pipe temporary strut |
| CN107829434A (en) * | 2017-12-05 | 2018-03-23 | 华东建筑设计研究院有限公司 | It is a kind of to be used for steel lattice column and the inverse shearing resistance construction made concrete structural beams and be connected |
| CN111305221A (en) * | 2019-12-09 | 2020-06-19 | 中建四局土木工程有限公司 | Method for replacing inner support of foundation pit |
-
2013
- 2013-12-18 CN CN201320833165.8U patent/CN203741996U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628572A (en) * | 2013-12-18 | 2014-03-12 | 华东建筑设计研究院有限公司 | Project beam-column joint for reverse building method |
| CN105649217A (en) * | 2015-12-31 | 2016-06-08 | 上海建工建集团有限公司 | Profiled steel structure beam column joint for reverse construction of stiffened structure and construction method |
| CN105908755A (en) * | 2016-05-31 | 2016-08-31 | 中铁第四勘察设计院集团有限公司 | Deep foundation pit supporting structure adopting steel pipe temporary strut |
| CN107829434A (en) * | 2017-12-05 | 2018-03-23 | 华东建筑设计研究院有限公司 | It is a kind of to be used for steel lattice column and the inverse shearing resistance construction made concrete structural beams and be connected |
| CN111305221A (en) * | 2019-12-09 | 2020-06-19 | 中建四局土木工程有限公司 | Method for replacing inner support of foundation pit |
| CN111305221B (en) * | 2019-12-09 | 2022-05-17 | 中建四局土木工程有限公司 | Method for replacing inner support of foundation pit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
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| CX01 | Expiry of patent term |