CN109778905A - Prefabricated assembling type reinforced concrete back block jacking box culvert construct method - Google Patents
Prefabricated assembling type reinforced concrete back block jacking box culvert construct method Download PDFInfo
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- CN109778905A CN109778905A CN201910008680.4A CN201910008680A CN109778905A CN 109778905 A CN109778905 A CN 109778905A CN 201910008680 A CN201910008680 A CN 201910008680A CN 109778905 A CN109778905 A CN 109778905A
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- box culvert
- back block
- concrete back
- armored concrete
- reinforced concrete
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Abstract
The present invention relates to Framed underpass bridge technical field of construction, provide a kind of prefabricated assembling type reinforced concrete back block jacking box culvert construct method, comprising: prefabricated box culvert and distribution beam on armored concrete slide plate；Prefabricated armored concrete back block is mounted on the side of the distribution beam, and the armored concrete back block is abutted with the distribution beam；Box culvert advancing dynamical system is installed between the box culvert and distribution beam, by the box culvert advancing dynamical system the box culvert advancing to installation position.The prefabricated assembling type reinforced concrete back block jacking box culvert construct method, using prefabricated armored concrete back block jacking construction, construction technology is simple, and armored concrete back block structure is secured, can be recycled, will shorten the construction period, and reduce project cost.
Description
Technical field
The present invention relates to Framed underpass bridge technical field of construction, after a kind of prefabricated assembling type reinforced concrete
Carry on the back block jacking box culvert construct method.
Background technique
Framed underpass bridge back form mainly uses mortar flag stone back, rail pile back and caisson back at present.
Wherein mortar flag stone back quantity of masonry is larger, is only applicable to need to push up the lesser jacking of power；Rail pile back is beaten, pulls out the rail duration
It is long, and it is not suitable for boulder bed；Caisson back hand excavation is long in time limit, and cost is relatively high.
Also, building the underground street crossing pedestrian passage construction method best in the case where not influencing traffic is using box culvert
Jacking construction.However box culvert advancing is relatively high to the intensity requirement of rear parados, it must be able to bear the maximum top in jack-in process
Power, natural back are optimal selections, but if under conditions of not natural back and when maximum top power it is larger when,
It builds general back and not only takes up an area larger, but also compare material of taking a lot of work, and be not necessarily able to satisfy in jack-in process maximum top power
Requirement, such jacking work is just difficult to carry out.
Summary of the invention
(1) technical problems to be solved
The object of the present invention is to provide a kind of prefabricated assembling type reinforced concrete back block jacking box culvert construct methods, it is intended to
It solves at least one of the technical problems existing in the prior art or related technologies.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of prefabricated assembling type reinforced concrete back block jacking box culverts
Construction method, comprising: prefabricated box culvert and distribution beam on armored concrete slide plate；
Prefabricated armored concrete back block is mounted on the side of the distribution beam, and the armored concrete back block
It is abutted with the distribution beam；
Box culvert advancing dynamical system is installed between the box culvert and distribution beam, the box culvert advancing dynamical system is passed through
The box culvert advancing to installation position.
Wherein, the inside of the armored concrete back block is embedded with reinforcing bar and steel pipe；The armored concrete back
The reinforcing bar of block protrudes into the steel pipe of the adjacent armored concrete back block to be assembled into armored concrete back
Block combination is mounted on armored concrete back block combination at the side of the distribution beam, and the armored concrete back
Block combination is abutted with the distribution beam.
Wherein, after the armored concrete back block being mounted on the side of the distribution beam, in the reinforced concrete
Earth filling tamping between native back block and the inner wall for the foundation pit that works.
Wherein, three oily two felt sliding layers are provided on the armored concrete slide plate.
Wherein, guiding pier is provided on the armored concrete slide plate, the guiding pier is along the jacking direction of the box culvert
Setting, the box culvert is between the guiding pier.
Wherein, the bottom of the armored concrete slide plate is provided with the reinforced concrete anchor beam arranged vertically.
Wherein, the bottom of the armored concrete slide plate is provided with blotter.
Wherein, steel plate is installed between the box culvert advancing dynamical system and the distribution beam.
(3) beneficial effect
Compared with prior art, the invention has the following advantages that
A kind of prefabricated assembling type reinforced concrete back block jacking box culvert construct method provided by the invention, in reinforced concrete
Prefabricated box culvert and distribution beam on native slide plate；Prefabricated armored concrete back block is mounted on the side of distribution beam, and reinforcing bar
Concrete back block is abutted with distribution beam；Box culvert advancing dynamical system is installed between box culvert and distribution beam, box culvert top is passed through
Precession Force system is box culvert advancing to installation position.Using prefabricated armored concrete back block jacking construction, construction technology is simple,
Armored concrete back block structure is secured, can be recycled, will shorten the construction period, and reduce project cost.
Detailed description of the invention
Fig. 1 is a kind of process of prefabricated assembling type reinforced concrete back block jacking box culvert construct method of the embodiment of the present invention
Figure；
Fig. 2 is the steel in a kind of prefabricated assembling type reinforced concrete back block jacking box culvert construct method of the embodiment of the present invention
The schematic view of the mounting position of reinforced concrete back block；
Fig. 3 is reinforcing bar in a kind of prefabricated assembling type reinforced concrete back block jacking box culvert construct method of the embodiment of the present invention
The structural schematic diagram of concrete back block；
Fig. 4 is reinforcing bar in a kind of prefabricated assembling type reinforced concrete back block jacking box culvert construct method of the embodiment of the present invention
The structural schematic diagram of concrete back block combination；
Description of symbols:
1, armored concrete back block；2, distribution beam；3, armored concrete slide plate；4, reinforced concrete anchor beam；5, blotter；
6, terrestrial reference line；7, work foundation pit；8, box culvert；9, soil horizon；10, reinforcing bar；11, steel bar stress；12, steel pipe.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Following instance
For illustrating the present invention, but it is not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected or can communicate each other；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly.For this field
For those of ordinary skill, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
Fig. 1 is a kind of process of prefabricated assembling type reinforced concrete back block jacking box culvert construct method of the embodiment of the present invention
Figure, as shown in Figure 1, prefabricated assembling type reinforced concrete back block jacking box culvert construct method provided in an embodiment of the present invention, packet
It includes:
S101, prefabricated box culvert and distribution beam on armored concrete slide plate；
Work foundation pit 7 is excavated, in work 7 the inside pouring reinforcement concrete slide plate 3 of foundation pit, the length of armored concrete slide plate 3
Degree, thickness and width need to be configured according to practical calculate, and are not especially limited in embodiments of the present invention.It is pouring
At armored concrete slide plate 3 on prefabricated box culvert 8 and distribution beam 2, be spaced a distance between box culvert and distribution beam 2.
S201 is mounted on prefabricated armored concrete back block 1 side of distribution beam 2, and armored concrete back block 1
It is abutted with distribution beam 2；
Prefabricated armored concrete back block makes different sizes in combination with different top power demand.Reinforced concrete when construction
Native back block is assembled using hanging device, substantially reduces difficulty of construction, and armored concrete back block is stronger, mentions
High construction efficiency, has a good application prospect.
S301 is installed on box culvert advancing dynamical system between box culvert 8 and distribution beam 2, passes through box culvert advancing dynamical system
8 jacking of box culvert to installation position.
Wherein, box culvert advancing dynamical system includes oil pump control platform, jack and load transfer device.Box culvert advancing is maximum pre-
The calculation method of power is: P=k [N1f1+ (N1+N2) f2+2Ef3+RA]；
In formula: P-maximum pushes up power, unit T；
Load on N1-bridges and culverts top surface, unit T；
The coefficient of friction of f1-bridges and culverts top surface and load thereon, applying paraffin wax is 0.17~0.34, powder coating 0.30；
N2-bridges and culverts gravity, T；
F2-bridges and culverts bottom surface and base soil coefficient of friction, take 0.7~0.8；
Two lateral earth pressure of E-bridges and culverts, T；
F3-side coefficient of friction；
The positive unit area resistance of R-steel in soil basil, fine grained soil be 500~550kPa, coarse-grained soil be 1500~
1700kPa；
A-positive the area of the steel basil, m2；
K-coefficient, generally with 1.2.
In embodiments of the present invention, prefabricated box culvert and distribution beam on armored concrete slide plate；Prefabricated reinforcing bar is mixed
Solidifying soil back block is mounted on the side of distribution beam, and armored concrete back block is abutted with distribution beam；Box culvert advancing dynamical system
System is installed between box culvert and distribution beam, by box culvert advancing dynamical system box culvert advancing to installation position.Using prefabricated steel
Reinforced concrete back block jacking construction, construction technology is simple, and armored concrete back block structure is secured, can be recycled, will contract
The short construction period, and reduce project cost.
In a specific embodiment, as shown in Figure 2, Figure 3 and Figure 4, the inside of armored concrete back block 1 is embedded with
Reinforcing bar 10 and steel pipe 12；The reinforcing bar 10 of armored concrete back block 1 is protruded into the steel pipe 12 of adjacent armored concrete back block 1
In to be assembled into the combination of armored concrete back block, the combination of armored concrete back block is mounted on the side of distribution beam 2, and steel
The combination of reinforced concrete back block is abutted with distribution beam 2.
In embodiments of the present invention, prefabricated armored concrete back block makes different rulers in combination with different top power demand
It is very little.Steel bar stress 11 is provided in armored concrete back block 1 to improve the intensity of structure, while can be multiple reinforced concretes
Native back block is assembled into an armored concrete back block combination.Below two armored concrete back blocks are assembled into one
It is illustrated for the combination of armored concrete back block.The reinforcing bar 10 of first armored concrete back block 1 is protruded into second
In the steel pipe 12 of armored concrete back block 1, the reinforcing bar 10 of second armored concrete back block 1 protrudes into first reinforced concrete
In the steel pipe 12 of native back block 1, an armored concrete back block combination assembly is completed at this time.
In a specific embodiment, as shown in Fig. 2, armored concrete back block 1 is mounted on the side of distribution beam 2
Later, the earth filling tamping between armored concrete back block 1 and the inner wall for the foundation pit 7 that works.
In embodiments of the present invention, reasonable 1 size of armored concrete back block is designed and the soil horizon 9 to be formed that bankets
Highly, make jack top power axis and 1 pressure resultant force position of armored concrete back block substantially in sustained height, avoid reinforcing bar
Concrete back block 1 topples.
In a specific embodiment, three oily two felt sliding layers are provided on armored concrete slide plate 3.
In embodiments of the present invention, the oily two felt sliding layers of setting three on the armored concrete slide plate 3 for pour completion, later
The prefabricated box culvert 8 on three oily two felt sliding layers again.Box culvert 8 and armored concrete can be reduced by the oily two felt sliding layers of setting three
Frictional force between slide plate 3.
In a specific embodiment, it is provided with guiding pier on armored concrete slide plate 3, is oriented to pier along the top of box culvert 8
It is arranged into direction, box culvert 8 is located between guiding pier.
In embodiments of the present invention, by being provided with two rows of guiding piers on armored concrete slide plate 3, to ensure that box culvert 8 pushes up
Into not being subjected to displacement in the process.And box culvert 8 is located between two rows of guiding piers.
In a specific embodiment, the bottom of armored concrete slide plate 3 is provided with the reinforced concrete anchor beam arranged vertically
4。
In embodiments of the present invention, the bottom of armored concrete slide plate 3 is provided with the reinforced concrete anchor beam 4 arranged vertically, energy
Frictional resistance between enough enhancings and the soil body.More reinforced concrete anchor beams 4 are arranged at equal intervals along the jacking direction along box culvert 8.
In a specific embodiment, the bottom of armored concrete slide plate 3 is provided with blotter 5.
In embodiments of the present invention, the bottom of armored concrete slide plate 3 is provided with blotter 5, can enhance and the soil body
Between frictional resistance.
In a specific embodiment, steel plate is installed between box culvert advancing dynamical system and distribution beam 2.
In embodiments of the present invention, steel plate is set between jack and distribution beam 2, top power is evenly transferred to reinforcing bar and is mixed
Solidifying soil back block 1, avoids distribution beam from being led to the concrete cracking of distribution beam by concentrated force effect.
Prefabricated assembling type reinforced concrete back block jacking box culvert construct method provided in an embodiment of the present invention, including excavate
Work foundation pit 7, and work foundation pit is located at terrestrial reference line 6 hereinafter, in work 7 the inside pouring reinforcement concrete slide plate 3 of foundation pit, in steel
Prefabricated box culvert 8 and distribution beam 2 on reinforced concrete slide plate 3；The armored concrete back block combination assembled is mounted on distribution
The side of beam 2, and the combination of armored concrete back block is abutted with distribution beam 2；Box culvert advancing dynamical system is installed on 8 He of box culvert
Between distribution beam 2, by box culvert advancing dynamical system 8 jacking of box culvert to installation position.Using prefabricated armored concrete back
Block jacking construction, construction technology is simple, and armored concrete back block structure is secured, can be recycled, will shorten the construction period, and
Reduce project cost.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of prefabricated assembling type reinforced concrete back block jacking box culvert construct method characterized by comprising mixed in reinforcing bar
Prefabricated box culvert and distribution beam on solidifying soil slide plate；
Prefabricated armored concrete back block is mounted on the side of the distribution beam, and the armored concrete back block and institute
State distribution beam abutting；
Box culvert advancing dynamical system is installed between the box culvert and distribution beam, by the box culvert advancing dynamical system institute
Box culvert advancing is stated to installation position.
2. prefabricated assembling type reinforced concrete back block jacking box culvert construct method as described in claim 1, which is characterized in that
The inside of the armored concrete back block is embedded with reinforcing bar and steel pipe；The reinforcing bar of the armored concrete back block is stretched
Enter to be assembled into the combination of armored concrete back block in the steel pipe of the adjacent armored concrete back block, the steel
Reinforced concrete back block combines the side for being mounted on the distribution beam, and armored concrete back block combination and the distribution
Beam abuts.
3. prefabricated assembling type reinforced concrete back block jacking box culvert construct method as described in claim 1, which is characterized in that
After the armored concrete back block is mounted on the side of the distribution beam, in the armored concrete back block and work
Earth filling tamping between the inner wall of foundation pit.
4. prefabricated assembling type reinforced concrete back block jacking box culvert construct method as described in claim 1, which is characterized in that
Three oily two felt sliding layers are provided on the armored concrete slide plate.
5. prefabricated assembling type reinforced concrete back block jacking box culvert construct method as described in claim 1, which is characterized in that
Guiding pier is provided on the armored concrete slide plate, the guiding pier is arranged along the jacking direction of the box culvert, the box culvert
Between the guiding pier.
6. prefabricated assembling type reinforced concrete back block jacking box culvert construct method as described in claim 1, which is characterized in that
The bottom of the armored concrete slide plate is provided with the reinforced concrete anchor beam arranged vertically.
7. prefabricated assembling type reinforced concrete back block jacking box culvert construct method as described in claim 1, which is characterized in that
The bottom of the armored concrete slide plate is provided with blotter.
8. prefabricated assembling type reinforced concrete back block jacking box culvert construct method as described in claim 1, which is characterized in that
Steel plate is installed between the box culvert advancing dynamical system and the distribution beam.
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| CN201910008680.4A CN109778905A (en) | 2019-01-04 | 2019-01-04 | Prefabricated assembling type reinforced concrete back block jacking box culvert construct method |
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| CN201910008680.4A CN109778905A (en) | 2019-01-04 | 2019-01-04 | Prefabricated assembling type reinforced concrete back block jacking box culvert construct method |
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| CN110241744A (en) * | 2019-06-18 | 2019-09-17 | 中国十七冶集团有限公司 | The construction method of jacking frame box culvert is worn under a kind of railway |
| CN111041995A (en) * | 2019-12-30 | 2020-04-21 | 中铁六局集团天津铁路建设有限公司 | Construction method for U-shaped frame structure to penetrate high-speed rail bridge obliquely downwards |
| CN111305074A (en) * | 2020-03-23 | 2020-06-19 | 中铁七局集团郑州工程有限公司 | Construction method for integrally dropping jacking box bridge with upward floating exceeding standard |
| CN114808735A (en) * | 2022-05-20 | 2022-07-29 | 中铁建大桥工程局集团第四工程有限公司 | Jacking construction control method for frame-structure bridge |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241744A (en) * | 2019-06-18 | 2019-09-17 | 中国十七冶集团有限公司 | The construction method of jacking frame box culvert is worn under a kind of railway |
| CN111041995A (en) * | 2019-12-30 | 2020-04-21 | 中铁六局集团天津铁路建设有限公司 | Construction method for U-shaped frame structure to penetrate high-speed rail bridge obliquely downwards |
| CN111041995B (en) * | 2019-12-30 | 2021-06-25 | 中铁六局集团天津铁路建设有限公司 | Construction method for U-shaped frame structure to penetrate high-speed rail bridge obliquely downwards |
| CN111305074A (en) * | 2020-03-23 | 2020-06-19 | 中铁七局集团郑州工程有限公司 | Construction method for integrally dropping jacking box bridge with upward floating exceeding standard |
| CN114808735A (en) * | 2022-05-20 | 2022-07-29 | 中铁建大桥工程局集团第四工程有限公司 | Jacking construction control method for frame-structure bridge |
| CN114808735B (en) * | 2022-05-20 | 2023-09-12 | 中铁建大桥工程局集团第四工程有限公司 | Frame bridge jacking construction control method |
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