CN107761741A - One kind manually abolishes inner support beam method - Google Patents
One kind manually abolishes inner support beam method Download PDFInfo
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- CN107761741A CN107761741A CN201710969016.7A CN201710969016A CN107761741A CN 107761741 A CN107761741 A CN 107761741A CN 201710969016 A CN201710969016 A CN 201710969016A CN 107761741 A CN107761741 A CN 107761741A
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- Prior art keywords
- concrete
- support beam
- inner support
- successively
- manually
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Classifications
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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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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses one kind manually to abolish inner support beam method, belongs to housing construction technical field, comprises the following steps successively：Set up full hall scaffold operating platform；Backfilled between on the inside of outer wall of basement and foundation ditch using concrete delamination；Before support girder is removed, first vibration isolation is set to stitch girder and lattice column both sides；First beams of concrete is drilled using drilling rod before abolishing concrete, beams of concrete expanded using concrete dynameter；Pair of interior support beam carries out manual demolition, and the order of dismounting is removed, removes beam successively upwards from foundation ditch bottom successively to be removed from beam both ends to middle part, from the beam away from foundation pit walls to the beam close to foundation pit walls.The present invention saws low artificial restructuring bankrupt using the golden steel cable of cost, rejects the coagulation civil engineering slag to get off and clears conveniently, is not limited by place, while itself operates and shake relatively small to the security risk of structure.
Description
Technical field
The invention belongs to housing construction technical field.
Background technology
The dismounting of concrete inner support beam mainly has the method that golden steel cable saw cut, static(al) explosion, excavator are abolished.
Construction cost is of a relatively high by the way of golden steel cable saw, itself operation and the security risk phase to structure during cutting
To larger, waist rail part is because one side is close to foundation ditch lagging pile, and saw of restricting can not operate, other concrete structure handlings cut down
And transport is more difficult.
Static(al) explosion requires higher to construction professional contingent, operates professional degree height, has shadow safely to surrounding enviroment and structure
Ring.
It is serious that excavator abolishes noise pollution, and vibrations are larger, and structure is impacted safely.
The content of the invention
It is an object of the invention to：It is proposed that one kind manually abolishes inner support beam method, it is low using the golden steel cable saw of cost
Artificial restructuring bankrupt, reject the coagulation civil engineering slag to get off and clear conveniently, do not limited by place, while itself operation and vibrations are to knot
The security risk of structure is relatively small.
The object of the invention is realized by following technical proposals：
One kind manually abolishes inner support beam method, comprises the following steps successively：
1) full hall scaffold operating platform is set up using fastener type steel pipe, put down as the operation for manually abolishing inner support beam
Platform；
2) after the lower floor's agent structure intensity for the inner support beam that need to be removed reaches 75% design strength, outer wall of basement with
Backfilled between on the inside of foundation ditch using concrete delamination, backfill thickness every time and must not exceed 1m, after the concrete final set of backfill, support replacement
Complete, that is, reach bracing demolition condition；
3) before support girder is removed, first at girder and 1 ± 0.2m of lattice column both sides vibration isolation will be set to stitch, shock insulation seaming and cutting enter steel
5 ± 1cm of reinforced concrete protective layer depth；
4) first beams of concrete is drilled using drilling rod before abolishing concrete, beams of concrete carried out using concrete dynameter
Expansion；
5) pair of interior support beam carries out manual demolition, and the order of dismounting is to be removed from beam both ends to middle part, from away from foundation pit walls
Beam remove successively to the beam close to foundation pit walls, remove beam successively upwards from foundation ditch bottom.
Alternatively, step 1) and 2) carry out simultaneously.
Alternatively, backfill uses C15 concrete.
Alternatively, drilling uses 20 drilling rods.
The foregoing main scheme of the present invention and its each further selection scheme can be this with independent assortment to form multiple schemes
The scheme that invention can be used and is claimed；And the present invention, between (each non conflicting selection) selection and between other selections
Can also independent assortment.Those skilled in the art can understand have after the present invention program is understood according to prior art and common knowledge
Multiple combinations, it is the claimed technical scheme of the present invention, does not do exhaustion herein.
Beneficial effects of the present invention：The mode of backfill support replacement makes whole basement barricade form overall structure with retaining wall, really
Protect foundation pit side-wall in demolishing process not cave in, strictly ensure construction safety, the setting and drilling of shock insulation seam by dismounting processed order
It is loose that expansion is advantageous to concrete, improves artificial work efficiency.The present invention saws low artificial restructuring bankrupt using the golden steel cable of cost, picks
Remove the coagulation civil engineering slag to get off to clear conveniently, do not limited by place, while itself operate and shake the security risk phase to structure
To smaller.
Brief description of the drawings
Fig. 1 is the plane arrangement structure schematic diagram of the inner support beam of the embodiment of the present invention；
Fig. 2 is the cross-sectional view of the operating platform of the embodiment of the present invention；
Fig. 3 is the facade structures schematic diagram of the operating platform of the embodiment of the present invention；
Fig. 4 is the inner support beam disconnected node home position schematic diagram of the embodiment of the present invention；
Fig. 5 is the shock insulation seam construction location schematic diagram of the embodiment of the present invention；
Wherein 1 it is foundation ditch, 2 be inner support beam, 3 be lattice column, 4 be full hall scaffold, 5 be yoke plate, 6 be railing, 7 is
Vibration isolation seam, 8 be floor, 9 be open position.
Embodiment
Following non-limiting examples are used to illustrate the present invention.
With reference to shown in figure 1, certain engineering ground periphery situation is complicated, and construction site is limited.According to surrounding building be distributed with
And field construction requirement, and geology engineering specifications is combined, using anchorage pile+inner support supporting two ways.Foundation ditch 1 is using drilling
Stake plus anchor cable and the combined supporting for combining inner support, take vertical support form.Drilled pile a diameter of 1200mm, 1500mm, pile body
Strength grade of concrete is C30 (lmna sections use C35).Inner support is supported jointly by inner support beam 2 plus steel lattice column 3, interior branch
It is C30 to support the strength grade of concrete of beam 2.
Basement inner support beam size and label
| Title | Size | Sectional area m2 | Concrete grade |
| Support beam ZCL-2 | 700×800mm | 0.56 | C30 |
| Support beam ZCL-1 | 500×600mm | 0.3 | C30 |
| Waist rail YL | 1000×1200mm | 1.2 | C30 |
Specifically manual demolition is carried out using following steps：
1st, as shown in Figure 2,3, there is certain height difference in the inner support beam 2 that need to be removed, need to set up operating platform with floor 8.Adopt
The operating platform of full hall scaffold 4 is set up with fastener type steel pipe, spacing is 1.5m, step pitch 2m in length and breadth for vertical rod.Should on operating surface edge
Inner support beam laying yoke plate 5, forbids worker to stand directly on operation on steel pipe.It is 1.1m's along the outside scaffolding height of yoke plate 5
Railing 6, operating personnel must hang safety rope, hang on railing 6.
2nd, this engineering support replacement uses " backfill of C15 concretes " mode.In the lower floor's agent structure intensity for the inner support beam 2 that need to be removed
After reaching 75% design strength, backfilled between outer wall of basement and the inner side of foundation ditch 1 using C15 concrete delaminations.Backfill is thick every time
Degree must not exceed 1m.After the concrete final set of backfill, support replacement is completed, that is, reaches bracing demolition condition.
3rd, as shown in figure 5, before support girder dismounting, first at the inner support beam 2 and both sides 1m of lattice column 3 vibration isolation will be set to stitch 7
(the shock insulation seam 7 that reinforced concrete protective layer is cut to 5cm).
4th, first beams of concrete is drilled using 20 drilling rods before abolishing concrete, beams of concrete entered using concrete dynameter
Row expansion.
5th, as shown in figure 4, according to " symmetrical off-load, stress release, successively excessive " principle, dismounting order of keeping under strict control, in figure
Black thick line is the mark of the open position 9 of inner support beam 2.The order of dismounting is to be removed from beam both ends to middle part, from away from foundation pit walls
Beam remove successively to the beam close to foundation pit walls, remove beam successively upwards from foundation ditch bottom.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (4)
1. one kind manually abolishes inner support beam method, it is characterised in that comprises the following steps successively：
1) full hall scaffold operating platform is set up using fastener type steel pipe, as the operating platform for manually abolishing inner support beam；
2) after the lower floor's agent structure intensity for the inner support beam that need to be removed reaches 75% design strength, outer wall of basement and foundation ditch
Backfilled between inner side using concrete delamination, backfill thickness every time and must not exceed 1m, after the concrete final set of backfill, support replacement is complete
Into reaching bracing demolition condition；
3) before support girder is removed, first at girder and 1 ± 0.2m of lattice column both sides vibration isolation will be set to stitch, shock insulation seaming and cutting enter reinforcing bar and mixed
5 ± 1cm of solidifying protective soil layer depth；
4) first beams of concrete is drilled using drilling rod before abolishing concrete, beams of concrete expanded using concrete dynameter
；
5) pair of interior support beam carries out manual demolition, and the order of dismounting is dismounting, the beam from remote foundation pit walls from beam both ends to middle part
Removed successively to the beam close to foundation pit walls, remove beam successively upwards from foundation ditch bottom.
2. manually abolish inner support beam method as claimed in claim 1, it is characterised in that：Step 1) and 2) carry out simultaneously.
3. manually abolish inner support beam method as claimed in claim 1, it is characterised in that：Backfill uses C15 concrete.
4. manually abolish inner support beam method as claimed in claim 1, it is characterised in that：Drilling uses 20 drilling rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710969016.7A CN107761741A (en) | 2017-10-18 | 2017-10-18 | One kind manually abolishes inner support beam method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710969016.7A CN107761741A (en) | 2017-10-18 | 2017-10-18 | One kind manually abolishes inner support beam method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107761741A true CN107761741A (en) | 2018-03-06 |
Family
ID=61268779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710969016.7A Pending CN107761741A (en) | 2017-10-18 | 2017-10-18 | One kind manually abolishes inner support beam method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107761741A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541807A (en) * | 2022-03-23 | 2022-05-27 | 中建八局第三建设有限公司 | Static breaking construction method for reinforced concrete structure |
| CN114961335B (en) * | 2022-06-24 | 2023-08-15 | 广东省第四建筑工程有限公司 | Demolition construction method for large-span reinforced concrete support beam |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2035383U (en) * | 1988-10-17 | 1989-04-05 | 山西省雁北地区进出口商品基地稀土机械部 | Hydraulic conical wedge expander |
| CN101476331A (en) * | 2007-12-12 | 2009-07-08 | 中国二十冶建设有限公司 | Closed demolition blasting method for internal concrete reinforcement bracing of basement foundation ditch |
| CN102828752A (en) * | 2011-06-13 | 2012-12-19 | 上海沃门实业有限公司 | Wedge block group of hydraulic rock and concrete splitter |
| CN105040709A (en) * | 2015-08-11 | 2015-11-11 | 中铁建大桥工程局集团第五工程有限公司 | Construction method for support replacement of fender-post retaining and protecting of deep foundation pit |
| CN205260037U (en) * | 2015-05-18 | 2016-05-25 | 南京海杰机械制造有限公司 | Hand -held type hydraulic pressure rendrock ware |
| WO2017084210A1 (en) * | 2015-11-16 | 2017-05-26 | 苏文藏 | Inner support wire saw lossless cutting and disassembling structure and construction method therefor |
-
2017
- 2017-10-18 CN CN201710969016.7A patent/CN107761741A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2035383U (en) * | 1988-10-17 | 1989-04-05 | 山西省雁北地区进出口商品基地稀土机械部 | Hydraulic conical wedge expander |
| CN101476331A (en) * | 2007-12-12 | 2009-07-08 | 中国二十冶建设有限公司 | Closed demolition blasting method for internal concrete reinforcement bracing of basement foundation ditch |
| CN102828752A (en) * | 2011-06-13 | 2012-12-19 | 上海沃门实业有限公司 | Wedge block group of hydraulic rock and concrete splitter |
| CN205260037U (en) * | 2015-05-18 | 2016-05-25 | 南京海杰机械制造有限公司 | Hand -held type hydraulic pressure rendrock ware |
| CN105040709A (en) * | 2015-08-11 | 2015-11-11 | 中铁建大桥工程局集团第五工程有限公司 | Construction method for support replacement of fender-post retaining and protecting of deep foundation pit |
| WO2017084210A1 (en) * | 2015-11-16 | 2017-05-26 | 苏文藏 | Inner support wire saw lossless cutting and disassembling structure and construction method therefor |
Non-Patent Citations (3)
| Title |
|---|
| 何跃川等: "超深基坑工程支撑拆除中换撑技术综合应用研究", 《施工技术》, vol. 44, no. 1, pages 14 - 17 * |
| 常化勇: "不规则多边形深基坑的钢筋混凝土内支撑拆除技术", 《建筑施工》, vol. 36, no. 3, pages 219 - 220 * |
| 张柳等: "深基坑混凝土环梁支撑拆除技术", 《建筑施工》, vol. 38, no. 12, pages 1169 - 1171 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541807A (en) * | 2022-03-23 | 2022-05-27 | 中建八局第三建设有限公司 | Static breaking construction method for reinforced concrete structure |
| CN114961335B (en) * | 2022-06-24 | 2023-08-15 | 广东省第四建筑工程有限公司 | Demolition construction method for large-span reinforced concrete support beam |
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