CN214219410U - Compound longitudinal connecting device suitable for bridge is assembled to festival segmentation cantilever - Google Patents

Compound longitudinal connecting device suitable for bridge is assembled to festival segmentation cantilever Download PDF

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Publication number
CN214219410U
CN214219410U CN202023157989.7U CN202023157989U CN214219410U CN 214219410 U CN214219410 U CN 214219410U CN 202023157989 U CN202023157989 U CN 202023157989U CN 214219410 U CN214219410 U CN 214219410U
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box girder
longitudinal
composite
bridge
girder segment
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CN202023157989.7U
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Chinese (zh)
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曹丽娜
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Shandong Jiaotong University
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Shandong Jiaotong University
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Abstract

The utility model discloses a compound longitudinal connecting device suitable for bridge is assembled to festival segmentation cantilever, the both ends of bridge are provided with the pier, and the upper end of the pier at both ends has connected gradually the box girder segment section of a plurality of segmentations, and the upper end of box girder segment section is provided with the bridge girder erection machine that hoists box girder segment section when being used for box girder segment section to connect, its characterized in that: the box girder comprises a box girder section and is characterized in that a plurality of horizontal composite longitudinal connecting devices are uniformly fixed on the left side surface of the box girder section at certain intervals, a horizontal clamping groove for clamping the composite longitudinal connecting devices is formed in the right edge of the upper end surface of the box girder section at certain intervals, and a strip-shaped groove is formed in the right edge of the lower end surface of an inner box body of the box girder section. The utility model provides high joint strength between the box girder segment section has improved the shear force bearing strength of bridge, has improved bridge overall stability, avoids the emergence of dangerous risk source.

Description

Compound longitudinal connecting device suitable for bridge is assembled to festival segmentation cantilever
Technical Field
The utility model relates to an assemble bridge connection device, more specifically the theory that says so especially relates to a compound vertical connection device suitable for bridge is assembled to festival segmentation cantilever.
Background
The sectional cantilever assembly is a novel construction process, the construction mode of the sectional cantilever assembly is different from that of traditional support cast-in-place construction, swivel construction, pushing construction and the like, and the sectional cantilever assembly has the advantages of short construction period, low construction risk, small influence on the surrounding environment and the like. With the improvement of labor cost and industrialization level in China, the sectional cantilever assembling construction process has wide application prospect in China.
Wherein, the shearing atress of box girder segment concrete is comparatively complicated, and shears the destruction and belong to brittle failure, and is very big to bridge structures harm. However, joints for each segment assembly are typically: the three joint treatment modes, namely the untreated dry joint, the epoxy resin-coated glue joint and the cast-in-place wet joint, cannot enable the bridge to have good integrity, have poor vertical shear resistance, are easy to generate shear cracks and cause safety risk accidents.
Disclosure of Invention
The utility model discloses an overcome above-mentioned technical problem's shortcoming, provide a compound longitudinal connecting device suitable for bridge is assembled to festival segmentation cantilever.
The utility model discloses a compound longitudinal connecting device suitable for bridge is assembled to festival segmentation cantilever, the both ends of bridge are provided with the pier, and the upper end of the pier at both ends has connected gradually the box girder segment section of a plurality of segmentations, and the upper end of box girder segment section is provided with the bridge girder erection machine that hoists box girder segment section when being used for box girder segment section to connect, its characterized in that: a plurality of horizontal composite longitudinal connecting devices are uniformly fixed on the left side surface of the box girder segment at certain intervals, the front half section of each composite longitudinal connecting device is fixed in the box girder segment, and the rear half section of each composite longitudinal connecting device extends out of the box girder segment;
the right edges of the upper end surfaces of the box girder segments are provided with horizontal clamping grooves at certain intervals for clamping the composite longitudinal connecting device, and the center lines of the clamping grooves on the right side of the upper end surfaces of the box girder segments are aligned with the center lines of the composite longitudinal connecting device on the left side of the upper end surfaces of the box girder segments; the right edge of the lower end face of the inner box body of the box girder segment is provided with a horizontal through strip-shaped groove which is used for being clamped into the composite longitudinal connecting device.
The composite longitudinal connecting device comprises longitudinal connecting I-beams and composite connecting studs, wherein the composite connecting studs are respectively and longitudinally fixed at four corners and the middle part of the cross section of the longitudinal connecting I-beams, and a plurality of composite connecting studs are vertically fixed on two inner side surfaces of the vertical column of the longitudinal connecting I-beams at certain intervals; the bottom of the composite connecting stud is provided with a stud base, the upper end of the stud base is fixed with a main stud, and the side surface of the main stud is uniformly fixed with a plurality of auxiliary studs which incline upwards.
The utility model discloses a compound longitudinal connection device suitable for bridge is assembled to festival segmentation cantilever, the length and the width of draw-in groove all are greater than the length and the width of the compound longitudinal connection device who stretches out the case roof beam festival section.
The utility model discloses a compound longitudinal connection device suitable for bridge is assembled to festival segmentation cantilever, the length in stripe type groove is greater than the compound longitudinal connection device's that stretches out the box girder segment section length.
The utility model discloses a compound longitudinal connection device suitable for bridge is assembled to festival segmentation cantilever, on the first half festival level of longitudinal connection I-steel was fixed in the inside steel reinforcement cage of case roof beam segment, the latter half festival of longitudinal connection I-steel stretched out the case roof beam segment outside.
The utility model discloses a compound longitudinal connection device suitable for bridge is assembled to festival segmentation cantilever, the case girder segment section is when connecting, and the concrete is pour behind the compound longitudinal connection device to the card income in the draw-in groove.
The utility model discloses a compound longitudinal connecting device suitable for bridge is assembled to festival segmentation cantilever, the box girder segment section is when connecting, and concrete is pour behind compound longitudinal connecting device to bar inslot card income.
The utility model has the advantages that: the utility model discloses a set up compound longitudinal connecting device and draw-in groove and match and be connected to concreting, having improved the joint strength between the box girder segment section, improved the shear force bearing strength of bridge, improved bridge overall stability, avoid the emergence in dangerous risk source. The composite longitudinal connecting device is arranged to be longitudinally connected with the I-shaped steel, and the contact area and the tensile resistance of the composite general connecting device to concrete are increased by arranging the main stud and the auxiliary stud, so that the composite general connecting device is simple in construction, convenient to install, capable of saving construction time and capable of improving working efficiency.
Drawings
Fig. 1 is a schematic structural view of the installation of the composite longitudinal connecting device suitable for the sectional cantilever-assembled bridge of the present invention;
fig. 2 is a schematic structural view of a box girder segment according to the present invention;
fig. 3 is a schematic structural view of the composite longitudinal connecting device of the present invention;
FIG. 4 is a schematic structural view of the stud base of the present invention;
fig. 5 is a schematic structural view of the connection of the box girder segments according to the present invention.
In the figure: 1 box girder segment section, 2 composite connecting studs, 3 longitudinal connecting I-steel, 4 composite longitudinal connecting devices, 5 stud bases, 6 auxiliary studs, 7 clamping grooves, 8 main studs, 9 bridge girder erection machines, 10 piers, 11 hoisting ropes and 12 strip-shaped grooves.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and examples.
As shown in fig. 1-5, the utility model discloses a compound longitudinal connection device's overall structure schematic diagram suitable for bridge is assembled to festival segmentation cantilever, the both ends of shown bridge are provided with pier 10, the upper end of the pier 10 at both ends has connected gradually the box girder segment section 1 of a plurality of segments, the upper end of box girder segment section 1 is provided with the bridge girder erection machine 9 that is used for hoisting box girder segment section 1 when box girder segment section 1 connects, the lower extreme of bridge girder erection machine 9 is provided with a plurality of hoist and mount ropes 11, box girder segment section 1 hoists the assigned position through hoist and mount rope 11, the box girder segment section 1 of multisection connects gradually and forms the initial road surface of bridge, connect between the box girder segment section 1 and accomplish after and pour fixedly, demolish bridge girder erection machine 9 and hoist and rope 11 after the bridge floor stabilizes.
A plurality of horizontal composite longitudinal connecting devices 4 are uniformly fixed on the left side surface of the box girder segment 1 at certain intervals, the front half section of each composite longitudinal connecting device 4 is fixed in the box girder segment 1, and the rear half section of each composite longitudinal connecting device 4 extends out of the box girder segment 1. The right side edge of the upper end face of the box girder segment 1 is provided with a horizontal clamping groove 7 for clamping the composite longitudinal connecting device 4 at a certain distance, and the clamping groove 7 on the right side of the upper end face of the box girder segment 1 is aligned with the composite longitudinal connecting device 4 on the left side of the upper end face of the box girder segment 1. The right edge of the lower end face of the inner box body of the box girder segment 1 is provided with a horizontal through strip-shaped groove 12 for clamping the composite type longitudinal connecting device 4.
The length and the width of the clamping groove 7 are both larger than those of the composite longitudinal connecting device 4 extending out of the box girder segment 1, the length of the strip-shaped groove 12 is larger than those of the composite longitudinal connecting device 4 extending out of the box girder segment 1, when the box girder segments 1 are connected, the box girder segments 1 are tightly attached, and concrete is poured after the composite longitudinal connecting device 4 is clamped into the clamping groove 7 and the strip-shaped groove 12.
The front half section of the longitudinal connecting I-steel 3 is horizontally fixed on a reinforcement cage inside the box girder segment 1, the longitudinal connecting I-steel 3 is welded on the reinforcement cage, then concrete is poured into the erected template to manufacture the box girder segment 1, and the rear half section of the longitudinal connecting I-steel 3 extends out of the box girder segment 1 and is used for connecting the next box girder segment 1.
The utility model discloses a compound longitudinal connecting device's installation manufacturing process suitable for bridge is assembled to festival segmentation cantilever, concrete implementation operating procedure as follows:
(a) and (5) mounting a bridge crane 9. After the construction of the bridge piers 10 reaches the maintenance age, the bridge girder erection machine 9 is installed between two adjacent bridge piers 10, and whether the installation of the bridge girder erection machine 9 is firm and the reliability of the hoisting ropes 11 are checked.
(b) A composite longitudinal connecting means 4 is produced. The I-steel with a set length is cut out, the composite connecting studs 4 are welded at four corners and the middle part of two cross sections of the I-steel, and a certain number of composite connecting studs 4 are welded on two inner side surfaces of the I-steel along the longitudinal direction. The composite connecting stud 4 consists of a stud base 5, a main stud 8 and auxiliary studs 6, the main stud 8 is fixed on the stud base 5 through welding, a certain number of auxiliary studs 6 which are inclined upwards are uniformly welded on the side surface of the main stud 8, and the composite longitudinal connecting device 4 is manufactured.
(c) And (3) assembling the prestressed reinforced concrete box girder segment 1 by the prefabricated cantilever. And (4) binding reinforcing steel bars in a precast beam factory according to the requirements of construction drawings. And welding the manufactured composite longitudinal connecting device 4 to the outer edge of the reinforcement cage at one end of the box girder segment 1, and ensuring that half of the composite longitudinal connecting device 4 is exposed outside the whole box girder segment 1. The composite longitudinal connecting device 4 is always kept in a horizontal state in the welding process; the clamping grooves 7 are arranged at the edge of the top face of the other end of the box girder segment 1 at certain intervals, the through-type strip-shaped grooves 12 are arranged at the edge of the inner side of the bottom face of the box chamber, concrete with certain thickness is reserved on two sides of each strip-shaped groove 12, an outer formwork is not required to be erected during mortar pouring, the longitudinal length of each clamping groove 7 is required to ensure that the composite longitudinal connecting device 4 can be poured in each clamping groove 7, and the composite longitudinal connecting device 4 does not touch the side wall of each clamping groove 7. And finally, erecting the template, pouring concrete and curing to a standard age.
(d) And (5) transporting the prestressed reinforced concrete box girder segment 1 assembled by the cantilever. And after the concrete reaches enough strength, removing the template, and transporting the box girder segment 1 carrying the composite longitudinal connecting device 4 to a construction site, wherein the integrity of the composite longitudinal connecting device 4 is protected well in the transportation process. The box girder segments 1 are prepared in place in the order of assembly.
(e) Assembling the prestressed reinforced concrete box girder segment 1 by cantilever assembly. And sequentially hoisting the box girder segments 1 to a preset position by using a bridge girder erection machine 9, and assembling the box girder segments segment by segment. During assembly, the composite longitudinal connecting device 4 of the previous box girder segment 1 is accurately placed into the clamping groove 7 and the strip-shaped groove 12 of the next segment, and the composite longitudinal connecting device 4 on the top surface of the box girder segment 1 and the inner side of the bottom surface of the box girder just correspond to the clamping groove 7 and the strip-shaped groove 12.
(f) And (5) pouring mortar. After the two adjacent box girder sections 1 are assembled, mortar is poured into the clamping groove 7 and the strip-shaped groove 12, the composite longitudinal connecting device 4 is ensured to be filled with the mortar, and the grouting process needs to be maintained by paying attention to the compactness of grouting liquid.
(g) And (4) prestress tension. And after the box girder segments 1 are assembled section by section and the construction strength is reached, the external prestressed steel bars are installed and tensioned, symmetrically tensioned and tensioned in stages.
(h) The bridge girder erection machine 9 is removed. After the reinforcing steel bars are tensioned, the whole span box girder bridge is maintained and reaches the design load, and the bridge girder erection machine is dismantled. When the device is disassembled, the device is disassembled from two ends to the middle one by one.
And cleaning the site and carrying out the next construction procedure.

Claims (6)

1. The utility model provides a compound longitudinal connection device suitable for bridge is assembled to festival segmentation cantilever, the both ends of bridge are provided with pier (10), and the upper end of pier (10) at both ends has connected gradually box girder segment section (1) of a plurality of segmentations, and the upper end of box girder segment section (1) is provided with and is used for hoisting bridge girder erection machine (9) of box girder segment section (1) when box girder segment section (1) is connected, its characterized in that: a plurality of horizontal composite longitudinal connecting devices (4) are uniformly fixed on the left side surface of the box girder segment (1) at certain intervals, the front half section of each composite longitudinal connecting device (4) is fixed in the box girder segment (1), and the rear half section of each composite longitudinal connecting device (4) extends out of the box girder segment (1);
the right edges of the upper end faces of the box girder segments (1) are provided with horizontal clamping grooves (7) at certain intervals for clamping the composite longitudinal connecting devices (4), and the center lines of the clamping grooves (7) on the right sides of the upper end faces of the box girder segments (1) are aligned with the center line of the composite longitudinal connecting device (4) on the left side of the upper end faces of the box girder segments (1); a horizontal through strip-shaped groove (12) which is used for being clamped into the composite longitudinal connecting device (4) is formed in the right side edge of the lower end face of the inner box body of the box girder segment (1);
the composite longitudinal connecting device (4) comprises longitudinal connecting I-beams (3) and composite connecting studs (2), wherein the composite connecting studs (2) are respectively and longitudinally fixed at four corners and the middle part of the cross section of the longitudinal connecting I-beams (3), and a plurality of composite connecting studs (2) are vertically fixed on two inner side surfaces of a vertical column of the longitudinal connecting I-beams (3) at certain intervals; the bottom of the composite connecting stud (2) is provided with a stud base (5), the upper end of the stud base (5) is fixed with a main stud (8), and the side surface of the main stud (8) is uniformly fixed with a plurality of upward inclined auxiliary studs (6).
2. The composite longitudinal connecting device suitable for the segmental cantilever assembled bridge of claim 1, wherein: the length and the width of the clamping groove (7) are both larger than those of the composite longitudinal connecting device (4) extending out of the box girder segment (1).
3. The composite longitudinal connecting device suitable for the segmental cantilever assembled bridge of claim 1, wherein: the length of the strip-shaped groove (12) is greater than that of the composite longitudinal connecting device (4) extending out of the box girder segment (1).
4. The composite longitudinal connecting device suitable for the segmental cantilever assembled bridge of claim 1, wherein: the front half section of the longitudinal connecting I-shaped steel (3) is horizontally fixed on a reinforcement cage inside the box girder segment (1), and the rear half section of the longitudinal connecting I-shaped steel (3) extends out of the outer side of the box girder segment (1).
5. The composite longitudinal connecting device suitable for the segmental cantilever erection bridge of claim 1 or claim 2, wherein: when the box girder sections (1) are connected, concrete is poured after the composite longitudinal connecting device (4) is clamped into the clamping groove (7).
6. The composite longitudinal connecting device suitable for the segmental cantilever erection bridge of claim 1 or claim 3, wherein: when the box girder sections (1) are connected, concrete is poured after the composite longitudinal connecting device (4) is clamped into the strip-shaped groove (12).
CN202023157989.7U 2020-12-24 2020-12-24 Compound longitudinal connecting device suitable for bridge is assembled to festival segmentation cantilever Active CN214219410U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202023157989.7U CN214219410U (en) 2020-12-24 2020-12-24 Compound longitudinal connecting device suitable for bridge is assembled to festival segmentation cantilever

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202023157989.7U CN214219410U (en) 2020-12-24 2020-12-24 Compound longitudinal connecting device suitable for bridge is assembled to festival segmentation cantilever

Publications (1)

Publication Number Publication Date
CN214219410U true CN214219410U (en) 2021-09-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202023157989.7U Active CN214219410U (en) 2020-12-24 2020-12-24 Compound longitudinal connecting device suitable for bridge is assembled to festival segmentation cantilever

Country Status (1)

Country Link
CN (1) CN214219410U (en)

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