CN110359729A - The carrierless method for dismounting of concrete support beam - Google Patents
The carrierless method for dismounting of concrete support beam Download PDFInfo
- Publication number
- CN110359729A CN110359729A CN201810317819.9A CN201810317819A CN110359729A CN 110359729 A CN110359729 A CN 110359729A CN 201810317819 A CN201810317819 A CN 201810317819A CN 110359729 A CN110359729 A CN 110359729A
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- Prior art keywords
- cutting
- supporting beam
- cut
- chain
- lifting
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The present invention relates to foundation pit field, specially a kind of carrierless method for dismounting of concrete support beam.A kind of carrierless method for dismounting of concrete support beam, it is characterized in that: successively implementing as follows: being 1. formed；2. marking；3. cutting；4. wearing chain；5. cutting；6. lifting.Working procedure of the present invention reduces construction cost, saves the duration.
Description
Technical field
The present invention relates to foundation pit field, specially a kind of carrierless method for dismounting of concrete support beam.
Background technique
The building enclosure for withstanding foundation pit using reinforced concrete inner support beam form in many base pit engineerings, guarantees foundation pit
It is excavating and the safety in work progress.Reinforced concrete brace, when using rope saw, saw blade equal segments cutting disassembling, one
As require that Support bracket is arranged in supporting beam bottom, bottom bracket is usually steel pipe scaffold or steel construction split heads etc., will
The concrete support beam cut down is held, and then metal binding wire rope carries out handling again, or is removed its scraper using fork truck.
But limit by conditions such as limited, the duration anxieties of narrow field work surface, set up it is time-consuming with facilities such as dismounting Support brackets,
Operation is also inconvenient.
Summary of the invention
In order to overcome the drawbacks of the prior art, the dismounting work that a kind of working procedure is provided, construction cost is reduced, saves the duration
Skill, the invention discloses a kind of carrierless method for dismounting of concrete support beam.
The present invention reaches goal of the invention by following technical solution:
A kind of carrierless method for dismounting of concrete support beam, it is characterized in that: successively implementing as follows:
1. sizing: actually determining cutting scheme and Hoisting Program according to scene, comprising: crane type selecting, erect-position, supporting beam are cut
Cut segmentation position, steel wire rope sling selection, trailer type selecting, erect-position, cutting sequence etc.；
2. mark: marking out the position of cutting seam with red paint in supporting beam to be cut；
3. cutting: two corners on the top at supporting beam mark cut concrete, make that beam main tendon is supported to expose, two
The lower part for locating main reinforcement digs a groove, groove so that cutting chain can pass through subject to；
4. wearing chain: after cutting chain is passed through from the groove of two main reinforcement lower parts, after one circle of supporting beam bottom winding, will cut
Chain head and the tail connection is cut to close cyclization, cutting chain is made to wrap supporting beam；
5. cutting: starting cutting chain starts to cut supporting beam, two nodes (node refer to column or building enclosure crown beam and
The connecting place of supporting beam) between supporting beam be divided at least three sections according to Hoisting Program, according to lifting sequence first section supporting beam
The cutting seam of two sides is in herringbone, two cutting seams and horizontal angle at 75 °~80 °, and the cutting seam of subsequent segment is pressed
It is vertically cut according to close to vertical, to reduce cutting seam length as far as possible, reduce clipping time；
Cutting chain must not rub the main reinforcement dug out when cutting, avoid damage to the pulling force of main reinforcement；
When supporting beam cut be more than section more than half when, top cutting seam in two sides hammer enter two drill rods, will
Cutting seam fills up, to reduce the pendant degree of collapsing for the supporting beam being segmented under cutting；
The sequence of cutting is carried out according to the sequence that first lifting segment is first cut；
6. lifting: after having cut, crane hangs wirerope and pinions the supporting beam being segmented, and tightens wirerope, the steel that top is connected
Muscle is cut off, and cuts the supporting beam being segmented thoroughly open, and the segmentation supporting beam is walked in crane handling, then carries out next section of support
The lifting of beam.
The carrierless method for dismounting of the concrete support beam, it is characterized in that:
Step 3. when, cutting chain select diamond chain；
Step 5. when, at 80 °~85 °, angle too small can increase cutting seam for the cutting seam of subsequent segment and horizontal angle
Length, and increase clipping time；
Note: when supporting beam segmentation weight it is larger, when the main reinforcement dug out is not enough to bear its weight, can increase and dig out main reinforcement
Quantity, or reduce supporting beam segmentation length, it is ensured that supporting beam concrete cutting after, the main reinforcement of connection remains to hold
This section of supporting beam；
When top main reinforcement is cut in lifting, notice that operator's erect-position should be in the support beam section side of non-lifting.
The invention has the following beneficial effects:
1. saving the installation of concrete support beam bottom bracket, taking and tear process open, accordingly reduces duration and cost, save
A large amount of expenses and time；
2. easy to operate easy to learn；
3. the selectance of big method for dismounting can be influenced using the environmental pollutions such as the non-explosions such as cutting, broken, to ecological ring
Accomplish green construction almost without influence in border.
Detailed description of the invention
Fig. 1 is the top view after completing step when the present invention is implemented 1.；
Fig. 2 is the partial enlargement diagram after completing step when the present invention is implemented 3.；
Fig. 3 is the partial enlargement diagram after completing step when the present invention is implemented 5..
Specific embodiment
The present invention is further illustrated below by way of specific embodiment.
Embodiment 1
A kind of carrierless method for dismounting of concrete support beam is successively implemented as follows:
1. sizing: actually determining cutting scheme and Hoisting Program according to scene as shown in Figure 1:, comprising: crane type selecting is stood
Position, 1 cutting section position of supporting beam, steel wire rope sling selection, trailer type selecting, erect-position, cutting sequence etc.；
2. mark: marking out the position of cutting seam 11 with red paint in supporting beam 1 to be cut；
3. cutting: as shown in Figure 2: two corners on the top at 1 mark of supporting beam cut concrete, keep supporting beam 1 main
Muscle 12 exposes, and the lower part of main reinforcement 12 digs a groove 13 at two, groove 13 so that cutting chain can pass through subject to；Cutting chain
Item selects diamond chain；
4. wearing chain: after cutting chain is passed through from the groove 13 of two 12 lower parts of main reinforcement, after 1 bottom of supporting beam winding, one circle,
By cutting chain head and the tail connection to close cyclization, cutting chain is made to wrap supporting beam 1；
5. cutting: as shown in Figure 3: starting cutting chain starts to cut supporting beam 1, and (node refers to column 2 or goes along with sb. to guard him two nodes
The crown beam of structure 3 and the connecting place of supporting beam 1) between supporting beam 1 be divided at least three sections according to Hoisting Program, according to lifting
The cutting seam 11 of 1 two sides of sequence first section supporting beam is in herringbone, the θ in two 11 and horizontal angle, that is, Fig. 3 of cutting seam
At 75 °~80 °, the cutting seam 11 of subsequent segment is according to close to vertical vertical cutting, and cutting seam 11 and horizontal angle are at 80 °
~85 °, angle too small can increase the length of cutting seam 11, and increase clipping time；
Cutting chain must not rub the main reinforcement 12 dug out when cutting, avoid damage to the pulling force of main reinforcement 12；
When supporting beam 1 cut be more than section more than half when, top cutting seam 11 in two sides hammer enter two drill rods
14, cutting seam 11 is filled up, to reduce the pendant degree of collapsing for the supporting beam 1 being segmented under cutting；
The sequence of cutting is carried out according to the sequence that first lifting segment is first cut；
6. lifting: after having cut, crane hangs wirerope and pinions the supporting beam 1 being segmented, and tightens wirerope, and top is connected
Reinforcing bar is cut off, and cuts the supporting beam being segmented 1 thoroughly open, and the segmentation supporting beam 1 is walked in crane handling, then carries out next section
The lifting of supporting beam 1.
Note: when supporting beam 1 be segmented weight it is larger, when the main reinforcement 12 dug out is not enough to bear its weight, can increase
The quantity of main reinforcement 12 is dug out, or reduces the length that supporting beam 1 is segmented, it is ensured that after the concrete cutting of supporting beam 1, connection
Main reinforcement 12 remains to hold this section of supporting beam 1；
When top main reinforcement 12 is cut in lifting, notice that operator's erect-position should be in 1 section of side of supporting beam of non-lifting.
Claims (2)
1. a kind of carrierless method for dismounting of concrete support beam, it is characterized in that: successively implementing as follows:
1. sizing: actually determining cutting scheme and Hoisting Program according to scene, comprising: crane type selecting, erect-position, supporting beam (1)
Cutting section position, steel wire rope sling selection, trailer type selecting, erect-position, cutting sequence；
2. mark: marking out the position of cutting seam (11) on supporting beam to be cut (1)；
3. cutting: two corners on the top at supporting beam (1) mark cut concrete, make supporting beam (1) main reinforcement (12)
Expose, the lower part of main reinforcement (12) digs a groove (13) at two, groove (13) so that cutting chain can pass through subject to；
4. wearing chain: after cutting chain is passed through from the groove (13) of two main reinforcement (12) lower parts, being wound along supporting beam (1) bottom
After one circle, by cutting chain head and the tail connection to close cyclization, cutting chain is made to wrap supporting beam (1)；
5. cutting: starting cutting chain starts to cut supporting beam (1), and the supporting beam (1) between two nodes is according to Hoisting Program
At least three sections are divided into, stitching (11) according to the cutting of lifting sequence first section supporting beam (1) two sides is in herringbone, two cutting seams
(11) and horizontal angle is at 75 °~80 °, and the cutting seam (11) of subsequent segment is vertically cut according to close to vertical；
Cutting chain must not rub the main reinforcement (12) dug out when cutting；
When supporting beam (1) cut be more than section more than half when, top cut seam (11) in two sides hammer enter two
Drill rod (14) fills up cutting seam (11)；
The sequence of cutting is carried out according to the sequence that first lifting segment is first cut；
6. lifting: after having cut, crane hangs wirerope and pinions the supporting beam (1) being segmented, and tightens wirerope, top is connected
Reinforcing bar cut off, cut the supporting beam (1) being segmented thoroughly open, the segmentation supporting beam (1) is walked in crane handling, is then carried out
The lifting of next section of supporting beam (1).
2. the carrierless method for dismounting of concrete support beam as claimed in claim 2, it is characterized in that:
Step 3. when, cutting chain select diamond chain；
Step 5. when, subsequent segment cutting seam (11) and horizontal angle at 80 °~85 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810317819.9A CN110359729A (en) | 2018-04-11 | 2018-04-11 | The carrierless method for dismounting of concrete support beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810317819.9A CN110359729A (en) | 2018-04-11 | 2018-04-11 | The carrierless method for dismounting of concrete support beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110359729A true CN110359729A (en) | 2019-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810317819.9A Pending CN110359729A (en) | 2018-04-11 | 2018-04-11 | The carrierless method for dismounting of concrete support beam |
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| Country | Link |
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| CN (1) | CN110359729A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343064A (en) * | 2020-11-27 | 2021-02-09 | 中铁七局集团第五工程有限公司 | Construction method for dismantling large-section annular concrete support beam of deep foundation pit |
| CN113482397A (en) * | 2021-06-30 | 2021-10-08 | 上海宝冶集团有限公司 | Static force dismantling construction method for high-altitude suspension independent frame beam |
| CN114961335A (en) * | 2022-06-24 | 2022-08-30 | 广东省第四建筑工程有限公司 | Demolition construction method for large-span reinforced concrete supporting beam |
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|---|---|---|---|---|
| JPS61242273A (en) * | 1985-04-18 | 1986-10-28 | 株式会社フジタ | Method and apparatus for cutting reinforced concrete structure |
| CN101768926A (en) * | 2009-12-29 | 2010-07-07 | 中铁隧道集团有限公司 | Diamond rope saw static force cutting method |
| CN102808526A (en) * | 2011-06-01 | 2012-12-05 | 永升建设集团有限公司 | Nondestructive demolition construction method of reinforced concrete frame beam |
| CN104695314A (en) * | 2015-02-17 | 2015-06-10 | 中交一航局第四工程有限公司 | Construction method for cutting concrete by using diamond wire saw |
-
2018
- 2018-04-11 CN CN201810317819.9A patent/CN110359729A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61242273A (en) * | 1985-04-18 | 1986-10-28 | 株式会社フジタ | Method and apparatus for cutting reinforced concrete structure |
| CN101768926A (en) * | 2009-12-29 | 2010-07-07 | 中铁隧道集团有限公司 | Diamond rope saw static force cutting method |
| CN102808526A (en) * | 2011-06-01 | 2012-12-05 | 永升建设集团有限公司 | Nondestructive demolition construction method of reinforced concrete frame beam |
| CN104695314A (en) * | 2015-02-17 | 2015-06-10 | 中交一航局第四工程有限公司 | Construction method for cutting concrete by using diamond wire saw |
Non-Patent Citations (3)
| Title |
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| 夏晓兵等: "无损性切割技术在房屋整体改造中的应用", 《施工技术》 * |
| 张子安等: "切割拆除深基坑工程钢筋混凝土内支撑结构施工技术", 《价值工程》 * |
| 高瞻: "金刚石绳锯切割在钢筋混凝土内支撑拆除工程中的应用", 《中国建筑信息》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343064A (en) * | 2020-11-27 | 2021-02-09 | 中铁七局集团第五工程有限公司 | Construction method for dismantling large-section annular concrete support beam of deep foundation pit |
| CN113482397A (en) * | 2021-06-30 | 2021-10-08 | 上海宝冶集团有限公司 | Static force dismantling construction method for high-altitude suspension independent frame beam |
| CN114961335A (en) * | 2022-06-24 | 2022-08-30 | 广东省第四建筑工程有限公司 | Demolition construction method for large-span reinforced concrete supporting beam |
| 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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Application publication date: 20191022 |