CN110144824A - Beret slice single side formwork method - Google Patents
Beret slice single side formwork method Download PDFInfo
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- CN110144824A CN110144824A CN201910391348.0A CN201910391348A CN110144824A CN 110144824 A CN110144824 A CN 110144824A CN 201910391348 A CN201910391348 A CN 201910391348A CN 110144824 A CN110144824 A CN 110144824A
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- Prior art keywords
- beret slice
- construction
- type groove
- steel
- single side
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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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
Beret slice single side formwork method is related to wearing the culvert of engineering tunnel, U-type groove side wall construction technology under municipal administration.Tunnel is contained, after U-type groove foundation pit supporting project (cast-in-situ bored pile) construction, and side wall uses beret slice single side formwork technique, step: one, crown beam is constructed: in crown beam construction, the hole of accurate screw-thread steel is reserved at interval.Two, U-type groove pit earthwork excavates.Three, U-type groove construction of bottom plates: pre-buried fining twisted steel and Two bors d's oeuveres channel steel are needed when mounting base reinforcing bar, pours underplate concrete.Four, beret slice single side formwork is constructed: installing beret slice using lifting machine, beret slice bottom is placed in above Two bors d's oeuveres channel steel；Installation template, flitch；It reinforces.It, which is solved down, wears the culvert of engineering tunnel, the construction of U-type groove side wall using unilateral construction method, that there are construction technical requirements is high, larger for tall and big wall limitation, the larger, Support Method that occupies horizontal space is to site requirements height, the problem that working rack template consumption is big, cost is high, long in time limit.
Description
Technical field
The present invention relates to architectural construction technology methods, and in particular to the culvert of engineering tunnel, U-type groove side wall construction work are worn under municipal administration
Skill.
Background technique
In Subway Bridge construction process, tunnel contain and the concrete-pile of U-type groove side wall and foundation pit supporting project close to,
Cause not staying as required on the outside of side wall and set external wall construction work surface, causes to be applied according to traditional two-sided formwork way
Work.And the circulation material of traditional two-sided formwork investment is more, effect is poor, and the construction site area of occupancy is big, and construction cost is high,
It is not able to satisfy construction quality and schedule requirement.Single side bracing method: surveying setting-out → ground excavation → cushion construction → reinforcement installation
And after acceptance(check) → installation template → single side bracing lifts in place → installation single side bracing → installation reinforcement steel pipe → installation pressure
Beam channel steel → installation built-in fitting system → adjusting bracket verticality → installs operating platform → fastening inspection → examination conjunction again
Lattice after-pouring concrete；Using above-mentioned unilateral construction method, construction technology has the following disadvantages: construction technical requirement is high,
Larger for tall and big wall limitation, occupancy horizontal space is larger, and Support Method disappears to site requirements height, working rack template
Consumption is big, and cost is high, long in time limit.
Summary of the invention
The present invention provides one kind, it solves Subway Bridge two sides U-type groove and concrete-pile construction using unilateral construction method
Larger for tall and big wall limitation there are construction technical requirement height, occupancy horizontal space is larger, and Support Method is to site requirements
Height, working rack template consumption is big, and cost is high, problem long in time limit.
To solve the above problems, the present invention adopts the following technical scheme: beret slice single side formwork method, under municipal administration with wearing engineering
Road is contained, the construction of U-type groove side wall, using beret slice single side formwork technique, comprises the concrete steps that after bored pile construction:
(1) crown beam is constructed: in crown beam construction, the hole of accurate screw-thread steel is reserved at interval, for installing accurate screw-thread steel；
(2) U-type groove pit earthwork excavates: earth excavation, U-type groove bed course pour, concrete drill hole stake gunite concrete, as U
Type groove outer wall template；
(3) U-type groove construction of bottom plates: pre-buried fining twisted steel and U-type groove side wall main reinforcement is needed to weld and in advance when mounting base reinforcing bar
Two bors d's oeuveres channel steel is buried, bottom plate installation is then carried out and underplate concrete pours；
(4) beret slice single side formwork is constructed: installing beret slice using lifting machine, beret slice is placed in double close to wall side bottom
It spells above channel steel；Lumps of wood cushion block is set by shortcut middle line side bottom, beret slice top is reinforced through finish rolling screw thread to drawing and crown beam
Connection, beret slice lower part reinforce and are connect by the pre-buried fining twisted steel with U-type groove bottom.
400-800mm is divided between accurate screw-thread steel reserving hole.Reserved bore dia 35-45mm.Accurate screw-thread steel uses Φ
32 fining twisted steels.Beret slice arranges that spacing is 400-600mm.
The present invention is characterized by:
1, traditional bracket is replaced with beret slice, working face is small, and it is small not to be occupied horizontal space by the sex-limited of space；
2, using Two bors d's oeuveres channel steel support in beret slice in the following, beret slice stable structure, Two bors d's oeuveres channel steel can limit beret slice longitudinal direction
Displacement；
3, beret slice top is connect with the accurate screw-thread steel reserving hole in concrete drill hole stake top portion, beret slice lower part and U-type groove
The pre-buried fining twisted steel at bottom connects, and prevents beret slice lateral displacement；
4, beret slice stable structure, low to site requirements, working bracket consumption is small, low cost, short time limit.
Beret slice of the present invention is existing device, and beret slice can be used for highway bridge, and assembled portal jib crane is led
Beam, Bridge Erector, hanging basket etc..Bailey truss combined gantry crane, using assembly type steel bridge on highway component assembly portal frame, and
Its span and stem height are adjustable, to adapt to different work-yards, be now widely used for highway, railway, municipal administration, building,
The Contraction in Site such as the construction projects such as water conservancy, bridge construction precasting yard lifting movement prefabricated components, bridge pier side fortune dress crossbeam.
Conventional beret slice is welded by upper and lower chord member, vertical bar and brace, and there is male and female connector in the end of top-bottom chord,
There is pestle frame connecting pin bores on connector.The chord member of beret slice is composed of two No. 10 channel steels (back-to-back), on lower boom, weldering
There is steel plate of the muti-piece with circular hole, has the bolt hole for connecting with reinforcement chord member and the double-deck truss in upper and lower chord member, in top boom
Interior four bolts hole there are also for connecting support frame, two in-between holes are to connect for double or multiple rows of truss with internode
's.Two holes by both ends are across internode connections.Multiple rows of beret slice makees beam or column in use, must be reinforced with support frame
The joint portion of lower two section beret slices.
Detailed description of the invention
Fig. 1 is overall structure of the present invention；
Fig. 2 is the K direction view of Fig. 1；
Fig. 3 is partial enlarged view at the I of Fig. 2；
Fig. 4 is the schematic diagram of construction technology (two) step bored pile construction of the present invention；
Fig. 5 is the schematic diagram of construction technology (three) step crown beam construction of the present invention；
Fig. 6 is the schematic diagram of construction technology (four) step earth excavation of the present invention；
Fig. 7 is the schematic diagram of construction technology (five) step cushion construction of the present invention；
Fig. 8 is the schematic diagram of construction technology (five) step gunite concrete of the present invention；
Fig. 9 is the schematic diagram of construction technology (six) step baseplate reinforcing bar installation of the present invention；
Figure 10 is the schematic diagram of construction technology (seven) step installation section of the present invention beret slice；
Figure 11 is the schematic diagram of construction technology (eight) step installation side wall template of the present invention；
Figure 12 is the schematic diagram of construction technology (nine) step installation flitch of the present invention.
Symbol description in figure: U-type groove body 1, concrete drill hole stake 2, beret slice 3, original ground absolute altitude 4, drilled pile main reinforcement 5,
Crown beam 6, accurate screw-thread steel 7, accurate screw-thread steel reserving hole 8, bed course 9, shotcrete layer 10, Two bors d's oeuveres channel steel 11, finish rolling spiral shell
Line steel 12, lumps of wood cushion block 13, steel form 14, flitch 15, construction joint 16.
Specific embodiment
The present invention is described in detail with optimal embodiment below.
Embodiment one
Beret slice single side formwork method wears the culvert of engineering tunnel, the construction of U-type groove side wall under municipal administration, after bored pile construction,
Using beret slice single side formwork technique, comprise the concrete steps that:
(1) surveying setting-out: survey crew measures setting-out to works according to site control point；
(2) bored pile construction: being drilled using churning driven, until designed elevation, hangs steel reinforcement cage to designed elevation in hole
And acceptance(check) after-pouring concrete, complete concrete drill hole stake；
(3) crown beam is constructed: in crown beam construction, the hole of accurate screw-thread steel is reserved at interval, for installing accurate screw-thread steel；Essence
400-800mm is divided between quasi- screw-thread steel reserving hole.Reserved bore dia 35-45mm.Accurate screw-thread steel uses 32 finish rolling screw thread of Φ
Steel.Beret slice arranges that spacing is 400-600mm；
(4) U-type groove pit earthwork excavates: earth excavation, U-type groove bed course pour, concrete drill hole stake gunite concrete, as U
Type groove outer wall template；
(5) U-type groove construction of bottom plates: pre-buried fining twisted steel and U-type groove side wall main reinforcement is needed to weld and in advance when mounting base reinforcing bar
Two bors d's oeuveres channel steel is buried, bottom plate installation is then carried out and underplate concrete pours；
(6) beret slice single side formwork is constructed: installing beret slice using lifting machine, beret slice is placed in double close to wall side bottom
It spells above channel steel；Lumps of wood cushion block is set by shortcut middle line side bottom, beret slice top is reinforced through finish rolling screw thread to drawing and crown beam
Connection, beret slice lower part reinforce and are connect by the pre-buried fining twisted steel with U-type groove bottom；
(7) install side wall template: side wall template uses combined steel formwork, using lifting machine handling template and is installed on Bei Lei
On the inside of piece；
(8) flitch is installed: flitch is installed between combined steel formwork and beret slice；
(9) remaining beret slice and locking fining twisted steel are installed: remaining beret slice all being installed using lifting machine, locking
Fining twisted steel.
(10) school mould: survey crew carries out template correction using total station；
(11) casting concrete；
(12) form removal and beret slice and locking screw thread steel complete construction.
Embodiment two
As shown in Figure 1-3, beret slice single side formwork method, there is 100mm thickness C20 gunite concrete between drilled pile and U-type groove structure
As outboard template；Panel uses the 9015 of plate thickness 3mm to combine, and steel, mould are secondary stupefied for 100*100mm flitch, and stupefied master is 450*
3000*1450mm beret slice, master are stupefied, secondary stupefied, as shown in the figure to pulling plug model and step pitch.Pile foundation concrete is C30, U-type groove
Structural concrete is C40, and concreting mode is pumping.
Detailed construction processing step is:
(1) surveying setting-out: survey crew measures setting-out to works according to site control point；
(2) bored pile construction (as shown in Figure 4): being drilled using churning driven, until designed elevation and acceptance(check) are laggard
Row borehole cleaning hangs steel reinforcement cage in hole to designed elevation and acceptance(check) after-pouring concrete, completes concrete drill hole stake 2；
(3) crown beam construction (as shown in Figure 5): installing crown beam in concrete drill hole stake 2, need to be reserved every 525mm when installing crown beam
40mm hole, to install accurate screw-thread steel, accurate screw-thread steel is using the fixed bracket of 32 fining twisted steel of Φ；
(4) it earth excavation (as shown in Figure 6): according to works point position control earth excavation, digs to people at designed elevation 200mm
After the clear soil to designed elevation and acceptance(check) of work, U-type groove is formed；
(5) cushion construction and gunite concrete (as shown in Figure 7,8): U-type groove bottom surface pours 100mm bed course, concrete drill hole stake
2 side gunite concrete 75mm are thick；
(6) pre-buried 32 fining twisted steel (fining twisted steel baseplate reinforcing bar installation (as shown in Figure 9): is needed when mounting base reinforcing bar
It is pre-buried according to live beret slice size), the above side wall of chamfering pours together erects 800mm high, and when bottom slab concreting concrete is pre-buried double
20b channel steel 11 and 32 fining twisted steel of Φ are spelled, embedded bar and drilled pile main reinforcement 5 are welded；Then carry out bottom plate installation template and
Bottom surface pours underplate concrete；
(7) installation section beret slice (as shown in Figure 10): using lifting machine elder generation installation section beret slice 3 as falsework,
Job platform and inspection are provided for the worker of installation template；Beret slice divides into setting lumps of wood cushion block 13, and beret slice top passes through essence
Quasi- screw-thread steel is connect with the accurate screw-thread steel reserving hole 8 in concrete drill hole stake top portion, and beret slice lower part is pre-buried with U-type groove bottom
The connection of 32 fining twisted steel of Φ；
(8) install side wall template (as shown in figure 11): using 9015 combined steel formworks, (template should shift to an earlier date bulk spelling to side wall template
Connect), using lifting machine handling template and it is installed on the inside of beret slice；
(9) 100mmX100mm flitch (as shown in figure 12) is installed: flitch, flitch is installed between combined steel formwork and beret slice
Between be spaced setting, steel form is micro- when the purpose is to reduce gap between steel form and beret slice and shrink casting concrete
Deformation；
(10) remaining beret slice and locking fining twisted steel are installed: remaining beret slice all being installed using lifting machine, crown beam
After the accurate screw-thread steel and passed examination of place's installation 32 fining twisted steel of Φ；Lock 32 fining twisted steel of Φ: beret slice bottom with
After Φ 32 fining twisted steel in top carries out locking and acceptance(check)；
(11) school mould: survey crew carries out template correction using total station, reports supervising engineer after self-test is qualified；
(12) casting concrete: concrete uses and pumps, manually vibrates, placement layer by layer (300mm-500mm);
(13) form removal and beret slice and locking screw thread steel: branch is first torn open after following, and is first propped up and is torn open afterwards.The advantage is that: not only
Solving the problems, such as that construction site is narrow also needs the transport channel that is unearthed, and reduces construction cost, while ensure that U-type groove knot
The safety and presentation quality of structure.
Claims (5)
1. beret slice single side formwork method, which is characterized in that wear the culvert of engineering tunnel, the construction of U-type groove side wall under municipal administration, filled in drilling
After infusing pile driving construction, using beret slice single side formwork technique, comprise the concrete steps that:
(1) crown beam is constructed: in crown beam construction, the hole of accurate screw-thread steel is reserved at interval, for installing accurate screw-thread steel；
(2) U-type groove pit earthwork excavates: earth excavation, U-type groove bed course pour, concrete drill hole stake gunite concrete, as U
Type groove outer wall template；
(3) U-type groove construction of bottom plates: pre-buried fining twisted steel and U-type groove side wall main reinforcement is needed to weld and in advance when mounting base reinforcing bar
Two bors d's oeuveres channel steel is buried, bottom plate installation is then carried out and underplate concrete pours；
(4) beret slice single side formwork is constructed: installing beret slice using lifting machine, beret slice is placed in double close to wall side bottom
It spells above channel steel；Lumps of wood cushion block is set by shortcut middle line side bottom, beret slice top is reinforced through finish rolling screw thread to drawing and crown beam
Connection, beret slice lower part reinforce and are connect by the pre-buried fining twisted steel with U-type groove bottom.
2. beret slice single side formwork method as described in claim 1, which is characterized in that in step (1), accurate screw-thread steel preformed hole
400-800mm is divided between hole.
3. beret slice single side formwork method as described in claim 1, which is characterized in that in step (1), reserve bore dia 35-
45mm。
4. beret slice single side formwork method as described in claim 1, which is characterized in that in step (1), accurate screw-thread steel uses Φ
32 fining twisted steels.
5. beret slice single side formwork method as described in claim 1, which is characterized in that in step (1), beret slice arrangement spacing is
400-600mm。
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| CN201910391348.0A CN110144824A (en) | 2019-05-12 | 2019-05-12 | Beret slice single side formwork method |
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| CN201910391348.0A CN110144824A (en) | 2019-05-12 | 2019-05-12 | Beret slice single side formwork method |
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| CN110144824A true CN110144824A (en) | 2019-08-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467369A (en) * | 2021-06-11 | 2022-12-13 | 中铁二十二局集团第一工程有限公司 | Unilateral template combination system of consolidating |
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| CN207419519U (en) * | 2017-11-15 | 2018-05-29 | 江苏省岩土工程公司 | A kind of campshed supporting is with helping the structural system that arm-type barricade is combined |
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| CN115467369A (en) * | 2021-06-11 | 2022-12-13 | 中铁二十二局集团第一工程有限公司 | Unilateral template combination system of consolidating |
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