CN105421245B - Bent cap is without support steel hoop method construction technology - Google Patents
Bent cap is without support steel hoop method construction technology Download PDFInfo
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- CN105421245B CN105421245B CN201510955316.0A CN201510955316A CN105421245B CN 105421245 B CN105421245 B CN 105421245B CN 201510955316 A CN201510955316 A CN 201510955316A CN 105421245 B CN105421245 B CN 105421245B
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- steel hoop
- bent cap
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses bent cap without support steel hoop method construction technology, including steel hoop Experiments of Machanics, preparation of construction, steel hoop is installed, pier stud top dabbing, surveying and locating, falsework, the making and installation of bed die, making, transport and the installation of reinforcing bar, installs side form；Concrete pour and conserve and template and support the step such as dismounting.By using the bent cap in the present invention without support steel hoop method construction technology, meeting the original easy construction of steel hoop, it is harmless to pier stud, and steel it is repeatable utilize advantage while, security risk is reduced, with more practicality.
Description
Technical field
The present invention relates to bridge construction field, more particularly to bent cap is without support steel hoop method construction technology.
Technical background
Construction method of bent cap includes the several methods such as floor stand method, built-in fitting method, pre-buried rod iron method and steel hoop method, is
The quick, requirement of safety, high-quality is reached, need to be special according to the different construction environment in job site, different pier stud patterns and bent cap
Point is carried out conscientiously to above-mentioned several method than choosing.
Wherein, steel hoop method is exactly, in Coping Construction, steel band on pier stud to be stuck in two sections of half round bar steel bands, and at two ends
Weldering is with bracket, by cross beam frame on overhanging bracket, the top lotus transmitted using the frictional force bearing cross beam of steel band and pier stud
Carry, including bent cap deadweight, template deadweight, construction loads etc..
In actual applications, steel hoop has easy construction, the characteristics of harmless to pier stud, and the repeatable utilization of steel,
It is cost-effective；But existing Hold Hoop method construction technology has that safety coefficient is low, the big shortcoming of security risk.
In view of the defect that above-mentioned existing Hold Hoop method construction technology is present, the present inventor is answered based on such product engineering is engaged in
With abundant for many years practical experience and professional knowledge, and coordinate the utilization of scientific principle, be actively subject to research and innovation, to found one kind
Bent cap makes it have more practicality without support steel hoop method construction technology.
The content of the invention
Bent cap is provided in the present invention without support steel hoop method construction technology, the original easy construction of steel hoop is being met,
It is harmless to pier stud, and steel it is repeatable utilize advantage while, full blast danger is reduced, with more practicality.
The technical scheme that the present invention takes is：Bent cap is without support steel hoop method construction technology, it is characterised in that including following
Step：
A, steel hoop mechanical test：By steel hoop loaded on experiment pier stud, bracket is loaded, record steel hoop is in experiment pier
Displacement situation on post；
B, preparation of construction：The accurate location for calculating steel hoop in pier stud is returned according to the designed elevation of bent cap；
C, steel hoop are installed：According to the accurate location in step B, high-strength is used to the steel hoop of pass the test in step A
Bolt is installed；
D, pier stud top dabbing：After the concrete of pier stud reaches more than the 75% of design strength, to being dug at the top of pier stud
Hair processing；
E, surveying and locating：The foundation for installing bent cap bed die is used as using setting-out result；
F, falsework, the making and installation of bed die：Sandbox and girder are lifted after installation form support, with spaced
After tie-beam connection girder, transverse distribution beam is arranged, bent cap bed die is installed after the laying lumps of wood above transverse distribution beam；
G, the making of reinforcing bar, transport are with installing：Bent cap reinforcing bar is installed, the pre-buried of bearing pad stone and block reinforcing bar is noted；
H, installation side form：After bent cap reinforcement installation acceptance(check), bent cap side form is installed；
I, concrete pouring and conserve：Concrete continuous is irrigated, horizontal slice, one-shot forming, and is shaken using plug-in type
Dynamic device vibration；
After concrete is poured, immediately by surface covered rearing with plastic film, water seasoning；
J, template and support dismounting：When bent cap concrete crushing strength reaches 3.0Mpa, and ensure not reason form removal
And when being damaged, removable cover side template.
Further, steel hoop includes two blocks of semicircular arc steel plates, and bracket is separately positioned on two pieces of circular arc steel plate two ends.
Further, steel hoop steel plate thickness 16mm, high 720mm, anchor ear bracket steel plate thickness 20mm.
Further, high-strength bolt is 10.9 grades of M24 high-strength bolt, per side bracket using 12 high-strength bolts, divides two
Row are set.
Further, during multistage loadings, every grade of load is set to 5t.
Further, the content that pier stud is measured in step E includes：Pier stud center position measurement and the measurement of column crest level；
The measurement of pier stud center is measured using total powerstation；Column crest level measurement is, according to the temporary bench mark set up in construction, to use
Spirit level or three-dimensional coordinate control measurement.
Further, step F middle girders are 63a I-steel, and tie-beam is 32a channel-section steels, and transverse distribution beam is 14a channel-section steels,
The sectional dimension of the lumps of wood is 10cmX10cm；The spacing of transverse distribution beam is 0.5m, and the spacing of tie-beam is between 4.0m, the lumps of wood
Away from for 0.3m.
Further, the bent cap reinforcing bar in step G can be lifted first after installation on ground is good with loop wheel machine；Also can be the bottom of at
It is directly assembled on mould.
Further, rubber blanket is set between pier stud and steel hoop.
Further, fast insert is pulled out slowly during vibration, and vibrating head displacement is no more than 1.5 times of the rod operating radius；Vibration
Rod keeps 5~10cm distance with template；5~10cm of oscillating plate insertion lower-layer concrete.
Employ after above-mentioned technical proposal, the present invention has following beneficial effect：
1st, the original construction party of steel hoop is being met without support steel hoop method construction technology using the bent cap in the present invention
Just, it is harmless to pier stud, and steel it is repeatable utilize advantage while, full blast danger is reduced, with more practicality；
2nd, using steel hoop Experiments of Machanics step, the actual bearer ability of steel hoop is demonstrated, it is ensured that steel hoop works
Reliability；
3rd, two kinds of assembling methods of the bent cap reinforcing bar in step G so that in the place of crane convenient construction, in installation on ground
Quickening progress, it is ensured that construction safety；In the place of crane construction inconvenience, the flexibility that directly assembled increase is constructed on bed die；
4th, rubber blanket is set between pier stud and steel hoop anchor ear, increases the frictional force between pier stud and steel hoop, it is ensured that
The reliability of steel hoop work；
5th, the time of vibration of concrete, it is ensured that concrete obtains enough compactness, no longer sinks when concrete, concrete
Bubble, concrete surface hold one's breath when starting bleeding, represents that the layer vibrates appropriateness；
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it is therefore apparent that drawings in the following description are only this hair
Some embodiments described in bright, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of steel hoop in the present invention；
Fig. 2 is the structural representation of steel hoop Experiments of Machanics；
1 steel hoop, 2 brackets, 3 experiment pier studs, 4 jack.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the present invention, below in conjunction with of the invention real
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described implementation
Example only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to protection of the present invention
Scope.
The embodiment of the present invention is write by the way of progressive.
Bent cap is without support steel hoop method construction technology, it is characterised in that comprise the following steps：
A, steel hoop Experiments of Machanics：Hydraulic jack 4 is installed in experiment pier stud 3 root, left and right respectively sets one；Steel is embraced
1 upside-down mounting is bound round on pier stud, the bracket 2 of steel hoop 1 is arranged on jack 4；The bottom of steel hoop 1 is marked on pier stud；To steel
Anchor ear 1 is loaded, multistage loadings, and every grade of load is set to 5t；According to mark, Real Time Observation steel hoop 1 conjugates situation, and
Make a record；When being loaded into builder's tonnage, displacement, stable 20min, if without displacement, off-test are measured；Using steel hoop power
Experimental procedure is learned, the actual bearer ability of steel hoop is demonstrated, it is ensured that the reliability of steel hoop work；
B, preparation of construction：After the completion of pier stud construction, returned according to the designed elevation of bent cap and calculate the lower edge of steel hoop 1 in pier stud
Accurate location, and carry out mark；When pouring into a mould concrete, pier stud top concrete absolute altitude is controlled by 5cm higher than designed elevation；
C, steel hoop are installed：The mark done according to step B, is installed to the steel hoop 1 of pass the test in step A；
The bracket 2 of steel hoop 1 is connected per side using 12 10.9 grades of M24 high-strength bolt, and point two row are set, and are set between pier stud and steel hoop 1
Rubber blanket is put, the frictional force between pier stud and steel hoop is increased, it is ensured that the reliability of steel hoop work；
D, pier stud top dabbing：After the concrete of pier stud reaches more than the 75% of design strength, to being carried out at the top of pier stud top
Dabbing processing, that is, cut the cement mortar and loose weak layer at top, and dabbing is blown clean to fresh concrete, and with air compressor machine；Dabbing
Concrete absolute altitude afterwards is controlled in 3cm higher than designed elevation or so；
E, surveying and locating：Before Coping Construction, need to pier stud carry out construction survey, in this, as install bent cap bed die according to
According to the content of pier stud measurement includes：Pier stud center position measurement and the measurement of column crest level；The measurement of pier stud center uses total powerstation
Measure；Column crest level measurement is, according to the temporary bench mark set up in construction, to be surveyed with spirit level or three-dimensional coordinate control
Amount；
F, falsework, the making and installation of bed die：In the dabbing processing of pier stud top and step E in completing step D
After surveying and locating, installation form support；Hung oneself sand loading case and girder in steel hoop 1, will with the tie-beam set at a certain distance
Girder positioned at both sides is linked together, and transverse distribution beam is arranged after girder is stable；The lumps of wood is laid above transverse distribution beam；
Above process confirm on inspection it is errorless after, you can install bent cap bed die；
G, the making of reinforcing bar, transport are with installing：Installed in bent cap bed die and after acceptance(check), start that bent cap reinforcing bar is installed；
The processing and fabricating of bent cap reinforcing bar need to be carried out with installation in strict accordance with construction drawing and job specfication；Bent cap reinforcing bar can be first on ground
After assembly is good, lifted with loop wheel machine；Also can be directly assembled on bed die；Two kinds of assembling methods so that in crane convenient construction
Place, installation on ground accelerate progress, it is ensured that construction safety；In the place of crane construction inconvenience, the directly assembly on bed die
The flexibility of increase construction should be noted the pre-buried of bearing pad stone and block reinforcing bar；
H, installation side form：After bent cap reinforcement installation acceptance(check), bent cap side form strictly is installed by construction requirement；
I, concrete pouring and conserve：After model sheetinstallat is finished, plan-position, the top of management field test template are asked
Portion's absolute altitude, node contacts and stability；Through, starting to pour into a mould concrete after the assay was approved；Bent cap coagulation carries out coagulation using pump truck
The cast of soil；Concrete wants continuous pouring, and horizontal slice, one-shot forming are no more than 50cm per thickness degree, up and down during two layers of interval
Between must not exceed 1.5h, in lower-layer concrete initial set or poured layer concrete before remolding；Shaken using immersion vibrator
Dynamic, fast insert is pulled out slowly during vibration, and vibrating head displacement is no more than 1.5 times of the rod operating radius；Keep 5~10cm's with template
Distance；Avoid vibrating head collision slab, reinforcing bar；Insert 5~10cm of lower-layer concrete；When everywhere vibrates, blown slowly in vibration
Propose vibrating head；The time of vibration of concrete, it is ensured that concrete obtains enough compactness, no longer sinks when concrete, coagulation
Soil holds one's breath bubble, concrete surface when starting bleeding, represents that the layer vibrates appropriateness；The slump of concrete need to be strictly controlled, sternly
Lattice control the slump of concrete, it is ensured that the finish on bent cap surface, the appearance for preventing crafters；
, need to be immediately by surface covered rearing with plastic film, water seasoning after bent cap concrete is poured；
J, template and support dismounting：When bent cap concrete crushing strength reaches 3.0Mpa, and ensure not reason form removal
And when being damaged, removable cover side template；During form removal, plate body can be gently tapped with hammer, be allowed to depart from concrete, then with hanging
Car is dismantled, and is hoisted to specified location stacking；, could form removal branch when concrete strength reaches the 100% of design strength
Frame；It is strict to be carried out by order from top to bottom during support removing.
Using the bent cap in the present invention without support steel hoop method construction technology, the original easy construction of steel hoop is being met,
It is harmless to pier stud, and steel it is repeatable utilize advantage while, full blast danger is reduced, with more practicality；It is accurate in construction
During standby stepped concrete placing, pier stud top concrete absolute altitude is by the concrete mark after 5cm higher than designed elevation controls and dabbing
Height control causes the easier for installation of bent cap bed die in 3cm higher than designed elevation or so.
Wherein, steel hoop 1 includes two blocks of semicircular arc steel plates, and bracket 2 is separately positioned on two pieces of circular arc steel plate two ends；Steel
The steel plate of anchor ear 1 thickness 16mm, high 720mm, the steel plate of anchor ear bracket 2 thickness 20mm；Step F middle girders are 63a I-steel, and tie-beam is
32a channel-section steels, transverse distribution beam is 14a channel-section steels, and the sectional dimension of the lumps of wood is 10cmX10cm；The spacing of transverse distribution beam is 0.5m,
If 10 × 10 lumps of wood, spacing is that the spacing of 0.3m tie-beams is 4.0m, and the spacing of the lumps of wood is 0.3m.
Bent cap reduces construction land tenure and slope excavating without support steel hoop method construction technology, Hold Hoop method construction has construction
Technique is simple, easy to operate, efficiency high, the advantages of material usage is few, and Hold Hoop method avoids conventional floor stand from carrying out bases
The problem of reason, accelerates speed of application and has saved expense again；Substantially not by bent cap terrain clearance and applying in Hold Hoop method work progress
The influence of work surrounding environment, is suitable for a variety of construction environments, is a kind of method being worthy of popularization.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (8)
1. bent cap is without support steel hoop method construction technology, it is characterised in that comprise the following steps：A, steel hoop mechanical test：
By steel hoop（1）Upside-down mounting is in experiment pier stud（3）On, steel hoop（1）Bracket（2）It is arranged at jack（4）On, described
Test pier stud（3）The upper steel hoop（1）Bottom is marked, to the bracket（2）Loading, every grade of load is set to 5t,
Record the steel hoop（1）In the experiment pier stud（3）On displacement situation, when being loaded into builder's tonnage, measure displacement, it is stable
20 min, if without displacement, off-test；
B, preparation of construction：Returned according to the designed elevation of bent cap and calculate the steel hoop（1）In the accurate location of pier stud；
C, steel hoop are installed：According to the accurate location in step B, using institute of the high-strength bolt to pass the test in step A
State steel hoop（1）Installed；
D, pier stud top dabbing：After the concrete of the pier stud reaches more than the 75% of design strength, to entering at the top of the pier stud
The processing of row dabbing；
E, surveying and locating：The foundation for installing bent cap bed die is used as using setting-out result；
F, falsework, the making and installation of bed die：Sandbox and girder are lifted after installation form support, spaced company is used
Connect beam to connect after the girder, arrange transverse distribution beam, the bent cap is installed after the laying lumps of wood above the transverse distribution beam
Bed die；
G, the making of reinforcing bar, transport are with installing：Bent cap reinforcing bar is installed, the pre-buried of bearing pad stone and block reinforcing bar is noted；
The bent cap reinforcing bar can be lifted first after installation on ground is good with loop wheel machine；Also can be directly assembled on bed die；
H, installation side form：After the bent cap reinforcement installation acceptance(check), bent cap side form is installed；
I, concrete pouring and conserve：Concrete continuous is irrigated, horizontal slice, one-shot forming, and uses immersion vibrator
Vibration；
After concrete is poured, immediately by surface covered rearing with plastic film, water seasoning；
J, template and support dismounting：When bent cap concrete crushing strength reach 3.0Mpa not reason form removal and be damaged
When, remove bent cap side template.
2. the bent cap according to claim 1 is without support steel hoop method construction technology, it is characterised in that the steel hoop
（1）Including two blocks of semicircular arc steel plates, the bracket（2）It is separately positioned on two pieces of circular arc steel plate two ends.
3. the bent cap according to claim 1 is without support steel hoop method construction technology, it is characterised in that the steel hoop
（1）Steel plate thickness 16mm, high 720mm, the bracket（2）Steel plate thickness 20mm.
4. the bent cap according to claim 1 is without support steel hoop method construction technology, it is characterised in that the high-strength bolt
For 10.9 grades of M24 high-strength bolt, every side bracket（2）Connected using 12 high-strength bolts, point two row are set.
5. the bent cap according to claim 1 is without support steel hoop method construction technology, it is characterised in that pier in step E
The content of post measurement includes：Pier stud center position measurement and the measurement of column crest level；
The pier stud center measurement is measured using total powerstation；The column crest level measurement is according to facing for being set up in construction
When bench mark, with spirit level or three-dimensional coordinate control measure.
6. the bent cap according to claim 1 is without support steel hoop method construction technology, it is characterised in that institute in step F
Girder is stated for 63a I-steel, the tie-beam is 32a channel-section steels, the transverse distribution beam is 14a channel-section steels, the lumps of wood
Sectional dimension be 10cmX10cm；The spacing of the transverse distribution beam is 0.5m, and the spacing of the tie-beam is 4.0m, institute
The spacing for stating the lumps of wood is 0.3m.
7. the bent cap according to claim 1 is without support steel hoop method construction technology, it is characterised in that the pier stud and institute
State steel hoop（1）Between rubber blanket is set.
8. the bent cap according to claim 1 is without support steel hoop method construction technology, it is characterised in that fast during vibration to insert slow
Pull out, vibrating head displacement is no more than 1.5 times of the rod operating radius；Vibrating head keeps 5~10cm distance with template；
5~10cm of oscillating plate insertion lower-layer concrete.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510955316.0A CN105421245B (en) | 2015-12-18 | 2015-12-18 | Bent cap is without support steel hoop method construction technology |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201510955316.0A CN105421245B (en) | 2015-12-18 | 2015-12-18 | Bent cap is without support steel hoop method construction technology |
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| CN105421245A CN105421245A (en) | 2016-03-23 |
| CN105421245B true CN105421245B (en) | 2017-08-25 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120562A (en) * | 2016-07-08 | 2016-11-16 | 杭州市市政工程集团有限公司 | Overpass rod iron bracket bent cap support for shuttering integral hoisting construction method |
| CN109162204B (en) * | 2018-09-30 | 2020-03-31 | 北京城建道桥建设集团有限公司 | Construction method for transverse block rapid assembling of bridge substructure |
| CN110593114A (en) * | 2019-09-27 | 2019-12-20 | 杭州悦为科技有限公司 | Box girder construction method based on large-span box girder multi-hoop truss support bailey bracket |
| CN110820605B (en) * | 2019-11-07 | 2021-06-08 | 北京中交桥宇科技有限公司 | Airtight nondestructive formula bridge jacking platform of hot melt adhesive |
| CN111576195A (en) * | 2020-04-16 | 2020-08-25 | 中铁城建集团有限公司 | Construction method of support-free hoop for cylindrical pier |
| CN111424554A (en) * | 2020-04-20 | 2020-07-17 | 深圳市中邦(集团)建设总承包有限公司 | Construction method for suspended formwork of seascape trestle |
| CN112030750A (en) * | 2020-07-17 | 2020-12-04 | 中交一公局集团有限公司 | Construction process for tie beam in water |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102007046651A1 (en) * | 2007-09-28 | 2009-04-02 | Heidelberger Druckmaschinen Ag | powder device |
| JP5027184B2 (en) * | 2009-04-14 | 2012-09-19 | サンコーテクノ株式会社 | Fasteners, mounting method for attachment to concrete base material, fastening part structure |
| CN201686929U (en) * | 2010-06-11 | 2010-12-29 | 天津二十冶建设有限公司 | Pier column for bent cap construction |
| CN102234982A (en) * | 2011-05-10 | 2011-11-09 | 吴江市明港道桥工程有限公司 | Circular pier capping beam supporting device |
| CN204039921U (en) * | 2014-05-19 | 2014-12-24 | 赵燕 | A kind of Construction Support without support bent cap |
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Address after: 6, building 223, 210017 Simon Street, Jianye District, Jiangsu, Nanjing Patentee after: Jiangsu Zhaotong New Material Technology Co., Ltd Address before: 6, building 223, 210017 Simon Street, Jianye District, Jiangsu, Nanjing Patentee before: JIANGSU ZHAOTONG ENGINEERING TECHNOLOGY Co.,Ltd. |