CN104695336B - The double-deck first up and then down stand construction method of Cast-in-situ Beam - Google Patents
The double-deck first up and then down stand construction method of Cast-in-situ Beam Download PDFInfo
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- CN104695336B CN104695336B CN201510019803.6A CN201510019803A CN104695336B CN 104695336 B CN104695336 B CN 104695336B CN 201510019803 A CN201510019803 A CN 201510019803A CN 104695336 B CN104695336 B CN 104695336B
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Abstract
The invention discloses a kind of double-deck first up and then down stand construction method of Cast-in-situ Beam, it is to combine upper strata Cast-in-situ Beam and lower floor's in-situ beam casting considers, design shares a set of support and meets two-layer in-situ beam casting (i.e. upper strata Cast-in-situ Beam and lower floor's Cast-in-situ Beam shares a set of support), after upper strata in-situ beam casting is complete, transfer to lower floor's Cast-in-situ Beam support by removing upper layer bracket steel pipe and Bailey beam entirety, realize upper strata Cast-in-situ Beam support and be directly changed into lower floor's Cast-in-situ Beam support, reduce support high-altitude difficulty of construction, also reduce the use time of large lifting equipment simultaneously, accelerating construction progress, avoid because of the damage of upper strata in-situ beam casting beam body cast-in-place to lower floor.
Description
Technical field
The present invention relates to the construction method on science of bridge building basis, especially relate to a kind of more existing than lower floor according to upper strata Cast-in-situ Beam
Water the version of deck-siding, the Cast-in-situ Beam stand construction method of the lower floor that constructs after using upper strata Cast-in-situ Beam of first constructing.
Background technology
Constantly increasing along with China capital construction puts into, bridge construction develops rapidly, for reducing construction cost and for building
Ground, domestic a lot of across river, crossing bridge use double-decker form, and the structure shape of upper strata Cast-in-situ Beam deck-siding more cast-in-place than lower floor
Formula.
Traditional double-deck Cast-in-situ Beam stand construction method typically uses first construction lower floor Cast-in-situ Beam, then existing according still further to upper strata
Watering beam width and set up support, this method has the disadvantage in that 1, when upper strata Cast-in-situ Beam is wider than lower floor's Cast-in-situ Beam, and construction upper strata is existing
The support watering beam will be affected by the lower floor's Cast-in-situ Beam poured, and upper strata Cast-in-situ Beam cast-in-place support needs a part to be supported on
Lower floor's Cast-in-situ Beam end face, another part need to be set up steel pipe support from ground beyond lower floor's Cast-in-situ Beam scope, often there is support
Differ relatively big (general difference tens meters) with the support height length supporting ground in lower floor's Cast-in-situ Beam upper bracket height, cause propping up
Frame rigidity mismatch problem, settlement of foundation and beam deformation inconsistence problems.2, need to individually increase arranging section upper strata Cast-in-situ Beam to prop up
Frame basis and support, put into bigger.3, installation and the dismounting of support are more loaded down with trivial details, and the construction period is longer, whole rack construction cost
Higher.4, upper strata in-situ beam casting easily causes the damage to lower floor's Cast-in-situ Beam.
Summary of the invention
It is an object of the invention to provide a kind of upper strata Cast-in-situ Beam and lower floor's Cast-in-situ Beam shares a set of support, reduces support height
Empty difficulty of construction, also reduce use time, the accelerating construction progress of large lifting equipment simultaneously, avoid because of upper strata in-situ beam casting
The damage first up and then down stand construction method of bilayer Cast-in-situ Beam of beam body cast-in-place to lower floor.
The object of the present invention is achieved like this:
A kind of double-deck first up and then down stand construction method of Cast-in-situ Beam, feature is:
A, first existing according to upper strata Cast-in-situ Beam and the version of lower floor's Cast-in-situ Beam, appropriate design upper strata Cast-in-situ Beam and lower floor
Water beam and share the design drawing of a set of support；
B, position by mounting bracket coxopodite steel pipe, when cushion cap and span centre support drill hole pile foundation construction, embedded bracket is pre-
Embedded part；
C, mounting bracket coxopodite steel pipe, weld support coxopodite steel pipe with support built-in fitting；
After D, support coxopodite penstock installation are good, support coxopodite steel pipe connects the lower floor's Cast-in-situ Beam support steel being used for lengthening
Pipe standards save, and the sections of lower floor's Cast-in-situ Beam stand steel pipe standard knot is connected by bolt on flange with between sections；
After E, the sections of lower floor's Cast-in-situ Beam stand steel pipe standard knot install, lower floor support steel pipe transverse is installed successively and connects
System, longitudinally connected system；
F, installation lower floor Cast-in-situ Beam stent strut epimerite section steel pipe；
After G, lower floor's Cast-in-situ Beam support installation, lower floor's Cast-in-situ Beam stent strut epimerite section steel pipe connects and is used for lengthening
Upper strata Cast-in-situ Beam stand steel pipe standard knot, by spiral shell on flange between the sections of upper strata Cast-in-situ Beam stand steel pipe standard knot and sections
Tether and connect；
After H, the sections of upper strata Cast-in-situ Beam stand steel pipe standard knot install, upper strata stand steel pipe lateral connection is installed successively
System, longitudinally connected system；
I, installation upper strata Cast-in-situ Beam capital sections steel pipe；
J, installation upper strata Cast-in-situ Beam support sand cylinder；
K, installation upper strata Cast-in-situ Beam support capital distribution beam；
L, according to loop wheel machine crane capacity ground packet carry out spelling upper strata Cast-in-situ Beam support Bailey beam, then utilize loop wheel machine
Bailey beam is installed；
M, upper strata Cast-in-situ Beam support piling prepressing；
N, upper strata Cast-in-situ Beam reinforcing bar, template, concrete, pre-stress construction
O, the overall downward putting device of installation Bailey beam, remove upper strata Cast-in-situ Beam stand steel pipe；
P, installation lower floor Cast-in-situ Beam support sand cylinder；
Q, installation lower floor Cast-in-situ Beam support capital distribution beam；
R, the Bailey beam entirety of upper strata Cast-in-situ Beam support is transferred to lower floor's Cast-in-situ Beam support, and remove unnecessary shellfish thunder
Beam；
S, lower floor's Cast-in-situ Beam reinforcing bar, template, concrete, pre-stress construction；
T, dismounting lower floor Cast-in-situ Beam support, complete upper strata Cast-in-situ Beam and the construction of lower floor's Cast-in-situ Beam.
The present invention is to combine upper strata Cast-in-situ Beam and lower floor's in-situ beam casting considers, and design shares a set of support and meets two
Layer in-situ beam casting (i.e. upper strata Cast-in-situ Beam and lower floor's Cast-in-situ Beam shares a set of support), after upper strata in-situ beam casting is complete, by tearing open
Except upper layer bracket steel pipe and Bailey beam entirety are transferred to lower floor's Cast-in-situ Beam support, it is achieved upper strata Cast-in-situ Beam support is directly changed into
Lower floor's Cast-in-situ Beam support, reduces support high-altitude difficulty of construction, also reduces the use time of large lifting equipment simultaneously, accelerates construction
Progress, it is to avoid because of the damage of upper strata in-situ beam casting beam body cast-in-place to lower floor.It has the advantage that
1, rack arrangement combines upper strata Cast-in-situ Beam and lower floor's in-situ beam casting considers, and two-layer in-situ beam casting shares one
Set support, it is to avoid stiffness of support does not mate and foundation deformation inconsistence problems, effectively ensures Cast-in-situ Beam support overall steady
Qualitative and structural safety；
2, upper and lower two-layer in-situ beam casting shares a set of support, can reduce bracket basis and support puts into.
3, constructed after the Cast-in-situ Beam of upper strata, directly entirety can transfer Bailey beam support, in order to lower floor's Cast-in-situ Beam of constructing, reduced
Support is installed and Demolition Construction difficulty, shortens the critical process conversion time.
4, the damage to lower floor's Cast-in-situ Beam is avoided.
Accompanying drawing explanation
Fig. 1 is the supporting structure schematic diagram of the upper strata Cast-in-situ Beam of the present invention;
Fig. 2 is I-I to schematic diagram in Fig. 1；
Fig. 3 is II-II to schematic diagram in Fig. 1；
Fig. 4 is the supporting structure schematic diagram of lower floor's Cast-in-situ Beam of the present invention；
Fig. 5 is III-III to schematic diagram in Fig. 2；
Fig. 6 is IV-IV to schematic diagram in Fig. 2；
Fig. 7 is the schematic diagram of Bailey beam entirety downward putting device；
Fig. 8-Figure 26 is followed successively by the construction procedure B-T schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and compare accompanying drawing the present invention is described in further detail.
The construction equipment of the present invention is by bracket basis drilled pile 1, stand steel pipe built-in fitting 2, stand steel pipe 300, connection system
400, sand cylinder 5, capital distribution beam 6, Bailey beam 7, downward putting device 800, loop wheel machine 9 form.
Bracket basis drilled pile 1: span centre bracket basis processes and uses 20cm drilled pile bigger than diameter of steel tube.
When stand steel pipe built-in fitting 2: Dun Pangchengtai and bracket basis drilled pile concrete construction, bury support underground at its end face
Steel pipe embedded part.
Stand steel pipe 300: according to design drawing stand steel pipe total length, rationally carries out merogenesis, coxopodite steel pipe to stand steel pipe
301 length determine according to built-in fitting top mark height, and top opening is flanged, a length of 8m of standard sections 302, and top base opening is flanged, post
The a length of 1m of epimerite section 303, top base opening is flanged, is produced by specialty steel construction.Coxopodite steel pipe 301 welds with built-in fitting 2, the end
Joint uses bolt on flange to connect between steel pipe 301, standard sections 302, capital sections 303.
Connection is 400: stand steel pipe be installed to connect be 400 position time, be 400 to carry out steel pipe by connection in time
Connect.
Sand cylinder 5: according to design load, by specialty steel construction manufacturer production, sand cylinder 5 is mainly used to remove bed die, sand cylinder cloth
Put on steel pipe column top sections 303.
Capital distribution beam 6: according to calculating, uses shaped steel combination to process, and capital distribution beam 6 is placed on sand cylinder 5.
Bailey beam 7: standard Bailey beam 7 on leasing market, calculates according to design, reasonable Arrangement Bailey beam 7, comprehensively examines simultaneously
Considering the versatility of the upper and lower Bailey beam 7 packet, such upper strata Bailey beam 7 can be directly changed into lower floor's Bailey beam 7 and use.
Downward putting device 800: often set downward putting device is by 2 finish rolling deformed bars, 802,2 backing plates 803,4 of 801,6 nuts
The lower anchor beam of individual movable pad 804,1 806,1 bearing beam 807, the 1 upper anchor beam A808 of set jacking equipment 805,1,1 upper anchor
Beam B809 forms.Finish rolling deformed bar 801, nut 802, backing plate 803, movable pad 804, jacking equipment 805 produce for sizing
Product, lower anchor beam 806, bearing beam 807, upper anchor beam A808, upper anchor beam B809 are for be processed by shaped steel combination.
Loop wheel machine 9: according to field working conditions, selects mechanical performance to meet and hangs the requirement loop wheel machine 9 away from lift heavy.
A kind of double-deck first up and then down stand construction method of Cast-in-situ Beam, specifically comprises the following steps that
A, first existing according to upper strata Cast-in-situ Beam and the version of lower floor's Cast-in-situ Beam, appropriate design upper strata Cast-in-situ Beam and lower floor
Water beam and share the design drawing of a set of support；
B, position by mounting bracket coxopodite steel pipe, when cushion cap and span centre support drill hole pile foundation construction, embedded bracket is pre-
Embedded part；
C, mounting bracket coxopodite steel pipe, weld support coxopodite steel pipe with support built-in fitting；
After D, support coxopodite penstock installation are good, support coxopodite steel pipe connects the lower floor's Cast-in-situ Beam support steel being used for lengthening
Pipe standards save, and the sections of lower floor's Cast-in-situ Beam stand steel pipe standard knot is connected by bolt on flange with between sections；
After E, the sections of lower floor's Cast-in-situ Beam stand steel pipe standard knot install, lower floor support steel pipe transverse is installed successively and connects
System, longitudinally connected system；
F, installation lower floor Cast-in-situ Beam stent strut epimerite section steel pipe；
After G, lower floor's Cast-in-situ Beam support installation, lower floor's Cast-in-situ Beam stent strut epimerite section steel pipe connects and is used for lengthening
Upper strata Cast-in-situ Beam stand steel pipe standard knot, by spiral shell on flange between the sections of upper strata Cast-in-situ Beam stand steel pipe standard knot and sections
Tether and connect；
After H, the sections of upper strata Cast-in-situ Beam stand steel pipe standard knot install, upper strata stand steel pipe lateral connection is installed successively
System, longitudinally connected system；
I, installation upper strata Cast-in-situ Beam capital sections steel pipe；
J, installation upper strata Cast-in-situ Beam support sand cylinder；
K, installation upper strata Cast-in-situ Beam support capital distribution beam；
L, according to loop wheel machine crane capacity ground packet carry out spelling upper strata Cast-in-situ Beam support Bailey beam, then utilize loop wheel machine
Bailey beam is installed；
M, upper strata Cast-in-situ Beam support piling prepressing；
N, upper strata Cast-in-situ Beam reinforcing bar, template, concrete, pre-stress construction
O, the overall downward putting device of installation Bailey beam, remove upper strata Cast-in-situ Beam stand steel pipe；
P, installation lower floor Cast-in-situ Beam support sand cylinder；
Q, installation lower floor Cast-in-situ Beam support capital distribution beam；
R, the Bailey beam entirety of upper strata Cast-in-situ Beam support is transferred to lower floor's Cast-in-situ Beam support, and remove unnecessary shellfish thunder
Beam；
S, lower floor's Cast-in-situ Beam reinforcing bar, template, concrete, pre-stress construction；
T, dismounting lower floor Cast-in-situ Beam support, complete upper strata Cast-in-situ Beam and the construction of lower floor's Cast-in-situ Beam.
Claims (1)
1. the first up and then down stand construction method of double-deck Cast-in-situ Beam, it is characterised in that:
A, first according to upper strata Cast-in-situ Beam and the version of lower floor's Cast-in-situ Beam, appropriate design upper strata Cast-in-situ Beam and lower floor's Cast-in-situ Beam
Share the design drawing of a set of support；
B, position by mounting bracket coxopodite steel pipe, when cushion cap and span centre support drill hole pile foundation construction, embedded bracket is pre-buried
Part；
C, mounting bracket coxopodite steel pipe, weld support coxopodite steel pipe with support built-in fitting；
After D, support coxopodite penstock installation are good, support coxopodite steel pipe connects the lower floor's Cast-in-situ Beam stand steel pipe mark being used for lengthening
Quasi-joint, the sections of lower floor's Cast-in-situ Beam stand steel pipe standard knot is connected by bolt on flange with between sections；
After E, the sections of lower floor's Cast-in-situ Beam stand steel pipe standard knot install, successively install lower floor support steel pipe transverse connect system,
Longitudinally connected system；
F, installation lower floor Cast-in-situ Beam stent strut epimerite section steel pipe；
After G, lower floor's Cast-in-situ Beam support installation, lower floor's Cast-in-situ Beam stent strut epimerite section steel pipe connect upper for lengthen
Layer Cast-in-situ Beam stand steel pipe standard knot, between the sections of upper strata Cast-in-situ Beam stand steel pipe standard knot and sections by bolt on flange even
Connect；
After H, the sections of upper strata Cast-in-situ Beam stand steel pipe standard knot install, install successively upper strata stand steel pipe lateral connection system,
Longitudinally connected system；
I, installation upper strata Cast-in-situ Beam capital sections steel pipe；
J, installation upper strata Cast-in-situ Beam support sand cylinder；
K, installation upper strata Cast-in-situ Beam support capital distribution beam；
L, according to loop wheel machine crane capacity ground packet carry out spelling upper strata Cast-in-situ Beam support Bailey beam, then utilize loop wheel machine to install
Bailey beam；
M, upper strata Cast-in-situ Beam support piling prepressing；
N, upper strata Cast-in-situ Beam reinforcing bar, template, concrete, pre-stress construction
O, the overall downward putting device of installation Bailey beam, remove upper strata Cast-in-situ Beam stand steel pipe；
P, installation lower floor Cast-in-situ Beam support sand cylinder；
Q, installation lower floor Cast-in-situ Beam support capital distribution beam；
R, the Bailey beam entirety of upper strata Cast-in-situ Beam support is transferred to lower floor's Cast-in-situ Beam support, and remove unnecessary Bailey beam；
S, lower floor's Cast-in-situ Beam reinforcing bar, template, concrete, pre-stress construction；
T, dismounting lower floor Cast-in-situ Beam support, complete upper strata Cast-in-situ Beam and the construction of lower floor's Cast-in-situ Beam.
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| CN112160254A (en) * | 2020-11-02 | 2021-01-01 | 中建八局第二建设有限公司 | Construction method of high-simply-supported cast-in-place beam assembly type steel pipe-Bailey beam support |
| CN112832136B (en) * | 2021-01-06 | 2022-08-30 | 中铁大桥局集团第四工程有限公司 | Cast-in-place support on beam and fractional local preloading method thereof |
| CN112921813B (en) * | 2021-01-25 | 2022-06-21 | 中建科工集团有限公司 | Double-layer multi-span bridge construction method |
| CN113481853B (en) * | 2021-07-02 | 2022-05-17 | 中交武汉港湾工程设计研究院有限公司 | Mobile factory for concrete cast-in-place of door type double-layer highway-railway dual-purpose bridge |
| CN113585076A (en) * | 2021-07-08 | 2021-11-02 | 中国建筑第六工程局有限公司 | Construction method of overwater large-span double-layer cast-in-place beam |
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