CN212052342U

CN212052342U - Construction auxiliary tool is transversely widened to prestressed concrete T roof beam of scalable regulation

Info

Publication number: CN212052342U
Application number: CN202020093755.1U
Authority: CN
Inventors: 崔凤坤; 薛洪运; 董旭
Original assignee: Shandong Jiaotong University
Current assignee: Shandong Jiaotong University
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-12-01
Anticipated expiration: 2030-01-16

Abstract

The utility model discloses a construction appurtenance is transversely widened to scalable regulation's prestressed concrete T roof beam, including old bridge, new bridge, upper bracket and lower carriage, the upper bracket is by first crossbeam, the second crossbeam, head rod and second connecting rod are constituteed, first crossbeam and second crossbeam parallel fixation on the bridge floor, the length direction and the seam of first crossbeam and second crossbeam are perpendicular, head rod and second connecting rod cross arrangement are between first crossbeam and second crossbeam, the both ends of head rod and second connecting rod all are fixed with circular steel ball, the upper limb flange board upside of first crossbeam and second crossbeam is fixed with bowl-shaped recess, the second connecting rod both ends set up the bowl-shaped recess on first crossbeam and second crossbeam. The utility model discloses the preparation mode is simple, easily draws materials, and the cost is lower relatively, and maneuverability is strong, and the reuse rate is high simultaneously, can also mass production, has higher social and economic benefits.

Description

Construction auxiliary tool is transversely widened to prestressed concrete T roof beam of scalable regulation

Technical Field

The utility model relates to a construction appurtenance, more specifically the theory that says so especially relates to a construction appurtenance is transversely widened to prestressed concrete T roof beam of scalable regulation.

Background

With the continuous progress of society, the requirement of economic development on traffic is higher and higher, and in order to comply with the current situation of the current economic development of China, the widening of a bridge is an urgent problem to be solved at present. The prestressed concrete T-beam is a ubiquitous structure form in a bridge, and when a newly built prestressed concrete T-beam bridge is completed, an old bridge and a new bridge are connected together through a cast-in-place wet joint. If when the joint concrete is cast in place, the original bridge is kept to pass through for ensuring the original passing capacity, and vehicles, pedestrians and the like pass through the original bridge, so that the quality of the joint concrete is greatly stressed unevenly, the service life of the joint concrete is influenced, and the integrity of new and old prestressed concrete T-beam bridges is greatly reduced. However, the original bridge is not protected, the closed traffic will have great influence on the pedestrian, the passenger-cargo transportation and the social economy, and even unnecessary social reaction is brought.

The utility model provides a construction appurtenance is transversely widened to scalable regulation's prestressed concrete T roof beam makes new and old prestressed concrete T roof beam bridge form external rigid connection in concatenation department promptly under the circumstances of leading to, does not receive influence when original bridge vehicle, pedestrian cast-in-place to the seam concrete for internal wet seam concrete warp evenly in the pouring in-process in succession, guarantees the quality of seam concrete from this point on. The method not only ensures the traffic capacity of the original bridge, but also greatly improves the integrity of the new and old prestressed concrete T-beam bridges, prolongs the practical life and provides reference significance for widening the construction process of the old bridge.

Disclosure of Invention

The utility model discloses an overcome above-mentioned technical problem's shortcoming, provide a construction appurtenance is transversely widened to prestressed concrete T roof beam of scalable regulation.

The utility model discloses a construction auxiliary tool for transversely widening a prestressed concrete T-beam capable of being telescopically adjusted, which comprises an old bridge, a new bridge, a seam, an upper bracket and a lower bracket above and below the seam, wherein the upper bracket and the lower bracket are the same section bar; the method is characterized in that: the upper support comprises a first cross beam, a second cross beam, a first connecting rod and a second connecting rod, the first cross beam and the second cross beam are fixed on the bridge floor in parallel, one end of the first cross beam is fixed on an old bridge, the other end of the first cross beam is fixed on a new bridge, the length direction of the first cross beam and the second cross beam is perpendicular to a joint, the first connecting rod and the second connecting rod are arranged between the first cross beam and the second cross beam in a crossed manner, round steel balls are fixed at the two ends of the first connecting rod and the second connecting rod, bowl-shaped grooves are fixed at the upper sides of the upper flange plates of the first cross beam and the second cross beam, the two ends of the second connecting rod are arranged on the bowl-shaped grooves of the first cross beam and the second cross beam, the two ends of the first connecting rod are arranged at the lower sides of the upper flange plates of the first cross beam and the second cross beam, connecting rods are fixed at the, the lower support is corresponding to and parallel to the placing positions of the first cross beam and the second cross beam of the upper support, and the corresponding cross beams in the upper support and the lower support are connected through screws.

The utility model discloses a construction appurtenance is transversely widened to scalable regulation's prestressed concrete T roof beam, the crossbeam of first crossbeam, second crossbeam and lower carriage is the I-steel.

The utility model discloses a construction appurtenance is transversely widened to scalable regulation's prestressed concrete T roof beam, the backing plate has been placed between the both ends of first crossbeam, second crossbeam and lower carriage crossbeam and old bridge and new bridge.

The utility model discloses a construction appurtenance is transversely widened to scalable regulation's prestressed concrete T roof beam, the upper bracket and the lower carriage that are located seam top and below are connected through four screw rods, and the both ends of screw rod are through the nut fastening.

The utility model discloses a construction appurtenance is transversely widened to scalable regulation's prestressed concrete T roof beam, including setting up the template that the concrete that is arranged in the joint below and pours in the opposite direction seam carries out the support, the template is fixed in between support and the lower bridge floor through the screw rod.

The utility model has the advantages that: the utility model discloses a construction appurtenance is transversely widened to scalable regulation's prestressed concrete T roof beam, has the first crossbeam of adjusting the pole by two middles at arranging of seam upside and constitutes, and two holes are beaten respectively to the middle symmetric position of first crossbeam to its second crossbeam with the seam downside is fixed together, constitutes scalable regulation's prestressed concrete T roof beam and transversely widens construction appurtenance jointly. The device is convenient in that the proper position of the whole device can be adjusted by adjusting the first cross beam.

The utility model is realized by arranging two connecting rods between the first beam and the second beam in order to more conveniently adjust the position of the whole device in the longitudinal direction of the bridge, and the arrangement of the first connecting rod is realized by arranging the lower sides of the flange plates on the diagonal angles of the two beams; the second connecting rod is arranged in the rotating bowls on the upper sides of the upper flange plates of the first cross beam and the second cross beam, and the two connecting rods are connected together through the connecting rods, so that on one hand, the adjusting rod and the first cross beam are integrated, the adjustment is convenient, and the operation is easy; on the other hand, the whole device is convenient to fix, and rigidity nonuniformity is avoided. In addition, the device simple manufacture mode, easily draw materials, the cost is lower relatively, and maneuverability is strong, and the reuse rate is high simultaneously, can also process production in batches, has higher social economic benefits. The clamp is easy to construct and good in stability for the whole construction process, and has great guiding significance for popularization of the transverse splicing construction clamp of the prestressed concrete T-beam bridge.

Drawings

Fig. 1 is a schematic structural view of the construction auxiliary tool for transversely widening the telescopically adjustable prestressed concrete T-beam;

FIG. 2 is a cross-sectional view of the telescopically adjustable auxiliary tool for transverse widening of prestressed concrete T-beams;

FIG. 3 is a cross-sectional view B-B of FIG. 1 according to the present invention;

fig. 4 is a schematic structural diagram of the first connecting rod of the present invention.

In the figure: 1 old bridge, 2 new bridges, 3 first beams, 4 first connecting rods, 5 second connecting rods, 6 circular steel balls, 8 second beams, 9 nuts, 10 backing plates, 11 joints, 12 upper supports, 13 lower supports, 14 templates, 15 screw rods, 16 connecting rods and 17 connecting nuts.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and examples.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a schematic structural diagram of the construction assisting tool for transversely widening the telescopically adjustable prestressed concrete T-beam, a sectional view B of the first support beam, a schematic structural diagram of the first connecting rod and a schematic structural diagram of the second connecting rod are respectively given; the construction auxiliary tool for the transverse widening of the prestressed concrete T-beam capable of being telescopically adjusted comprises an upper bracket 12, a lower bracket 13, a first connecting rod 4, a second connecting rod 5, a screw rod 15, a connecting rod 17, a connecting nut 17 and a nut 9, wherein upper bracket 12 is fixed on seam 3 of old bridge 1 and new bridge 2, the lower carriage is fixed below seam 3, upper bracket 12 includes first crossbeam 3, second crossbeam 8, head rod 4 and second connecting rod 5, first crossbeam 3 and the parallel and symmetry of second crossbeam 8 are placed, the both ends of first crossbeam 3 and second crossbeam 8 are fixed on new bridge 2 and old bridge 1, it connects into a whole to have realized new bridge 2 and old bridge 1, head rod 4 and second connecting rod 5 are alternately put and are connected and fixed by coupling nut through connecting rod 15, the setting is between first crossbeam and second crossbeam, thereby realize forming a whole between first crossbeam 3 and the second crossbeam 8. The lower bracket 13 is composed of two beams which are parallel to each other and are positioned corresponding to the first beam and the second beam, the upper bracket 12 and the lower bracket 13 are connected through a screw 15, and the upper bracket and the lower bracket are fixed by a nut 9, so that the upper bracket 12 and the lower bracket 13 form a whole.

The first cross beam 3, the second cross beam 8 and the cross beams on the lower support are made of I-shaped steel, so that the rigidity of connection between a new bridge and an old bridge is increased, bowl-shaped grooves are welded on the upper sides of the upper flange halves in the diagonal directions of the first cross beam and the second cross beam, round steel balls 6 are welded at the two ends of the first connecting rod 4 and the second connecting rod 5, the round steel balls 6 at the two ends of the second connecting rod 5 are placed in the bowl-shaped grooves in the first cross beam 3 and the second cross beam 8, the two ends of the first connecting rod 4 are arranged on the lower sides of the upper flange plates of the first cross beam and the second cross beam in the diagonal direction, a connecting rod 16 is arranged between the crossed positions of the first connecting rod 4 and the second connecting rod 5, and the two ends are fastened by a connecting nut 17, so that the; and a template 14 for pouring concrete is arranged below the joint 11, the template 14 is arranged between the bracket and the lower bridge floor and is connected by a screw 15, and the template not only shapes the poured concrete, but also can prevent the concrete from losing when the concrete is poured. When the upper support 12 and the lower support 13 are fixed with the bridge floor, a base plate 10 is fixed between the upper support and the bridge floor, so that the flatness between the new bridge 2 and the old bridge 1 is adjusted, and the beam is prevented from being adhered to the bridge floor when concrete is poured.

The utility model discloses a construction appurtenance's concrete construction step is transversely widened to scalable regulation's prestressed concrete T roof beam does:

1. and (5) processing the upper bracket and the lower bracket. The device upper and lower both sides respectively have two crossbeams to constitute, are connected by head rod 4, second connecting rod 5 and connecting rod 16 between first crossbeam 3 of upside and the second crossbeam 8, do not have the connecting rod between the two crossbeams of downside. Two bolt holes are drilled at the middle symmetrical position of each cross beam, the upper support 12 and the lower support 13 are connected into a whole through a screw 15, and two bowl-shaped grooves are welded at the diagonal positions of the upper flange plates of the first cross beam 3 and the second cross beam 8.

2. And (5) manufacturing and installing the connecting rod. The bowl-shaped groove on the upper side of the upper flange plate of the first beam 3 and the bowl-shaped groove on the lower side of the upper flange plate of the second beam 8 are respectively provided with a second connecting rod 5 and a first connecting rod 4, and two ends of the two connecting rods are welded with round steel balls 6; the crossing positions of the first connecting rod 4 and the second connecting rod 5 are provided with connecting rods 16 and are fastened by connecting nuts 17. No matter the round steel ball 6 on the first connecting rod 4 at the lower side of the upper flange plate or the round steel ball 6 on the second connecting rod 5 on the upper flange plate, the angle can be freely adjusted in the upper flange plate and the steel bowl.

3. And (3) mounting an auxiliary construction tool for transverse widening of the prestressed concrete T-beam. After the work is finished, the first cross beam 3 and the second cross beam 8 are connected together through the screw rod 15, before the first cross beam 3 and the second cross beam 8 are fixed, the backing plate 10 is placed at the position where new and old bridge surfaces are in steel contact with the two cross beams for isolation, so that after joint concrete is poured, the cross beams are connected with the concrete together, and the splitting is difficult. In the process of connecting the cross beams, the position of the whole device can be adjusted in the transverse bridge direction by adjusting the connecting rods, and finally the first cross beam 3, the second cross beam 8 and the two cross beams of the lower support are fixed together through the screw 15. And according to the calculation design result, uniformly arranging prestressed concrete T-shaped beams in the longitudinal bridge upwards to form transverse widening construction auxiliary tools.

4. And (5) binding steel bars at the joint. According to the drawing requirement, the reinforcing steel bars at the joints are reasonably arranged and bound, and the screws 15 used for connecting the first cross beam 3, the second cross beam 8 and the lower support cross beam are avoided as far as possible, so that the problem of concrete quality caused by uneven concrete pouring is avoided.

5. Erection of the formwork 14. And building a concrete pouring template according to the requirements of drawings. Some care must be taken when setting up to ensure that the gap between the forms 14 meets regulatory requirements.

6. And (6) pouring concrete. After the formwork is erected, concrete begins to be poured, and the concrete is vibrated fully in the concrete pouring process, so that the concrete pouring quality is guaranteed.

7. And (5) concrete curing. In the concrete curing process, water is sprayed regularly according to the standard requirements, the curing conditions required by the concrete are achieved, and the curing period of the concrete reaches 28 days.

8. And dismantling the transverse splicing auxiliary construction device of the prestressed concrete T-beam. And (4) after the concrete reaches the curing age, dismantling the prestressed concrete T-beam splicing auxiliary construction device. The lower bracket beam is removed first, and since the screw 15 is already cast with the concrete, the screw 15 is cut directly at the concrete surface when the device is removed. When the first cross member 3 and the second cross member 8 are removed, the connecting rods do not need to be removed, and the upper bracket 12 is directly removed as a whole. And after the cutting is finished, the components are sorted, and finally, oil is applied for maintenance and storage for the next use.

Claims

1. A construction auxiliary tool for transversely widening a prestressed concrete T-beam capable of being telescopically adjusted comprises an old bridge (1), a new bridge (2), a joint (11), an upper bracket (12) and a lower bracket (13) above and below the joint (11), wherein the upper bracket (12) and the lower bracket (13) are the same section bars; the method is characterized in that: the upper support (12) is composed of a first cross beam (3), a second cross beam (8), a first connecting rod (4) and a second connecting rod (5), the first cross beam (3) and the second cross beam (8) are fixed on the bridge floor in parallel, one end of the first cross beam is fixed on an old bridge (1), the other end of the first cross beam is fixed on a new bridge (2), the length directions of the first cross beam (3) and the second cross beam (8) are perpendicular to a joint (11), the first connecting rod (4) and the second connecting rod (5) are arranged between the first cross beam (3) and the second cross beam (8) in a crossed manner, round steel balls (6) are fixed at the two ends of the first connecting rod (4) and the second connecting rod (5), bowl-shaped grooves are fixed at the upper flange plate upside of the first cross beam (3) and the second cross beam (8), the two ends of the second connecting rod (5) are arranged on the first cross beam (3) and the second cross beam (8), the two ends of the first connecting rod (4) are arranged at the lower sides of the upper wing edge plates of the first cross beam (3) and the second cross beam (8), connecting rods (16) are fixed at the crossing positions of the two connecting rods, the two ends of each connecting rod (16) are fastened through connecting nuts (17), the lower support (13) is composed of cross beams, the lower support is corresponding and parallel to the placing positions of the first cross beam (3) and the second cross beam (8) of the upper support (12), and the corresponding cross beams in the upper support (12) and the lower support (13) are connected through screws (15).

2. The telescopically adjustable prestressed concrete T-beam transverse widening construction assisting tool according to claim 1, characterized in that: the cross beams of the first cross beam (3), the second cross beam (8) and the lower support (13) are all I-shaped steel.

3. The telescopically adjustable prestressed concrete T-beam transverse widening construction assisting tool according to claim 1 or 2, characterized in that: and base plates (10) are arranged between the two ends of the first cross beam (3), the second cross beam (8) and the cross beam of the lower bracket (13) and the old bridge (1) and the new bridge (2).

4. The telescopically adjustable prestressed concrete T-beam transverse widening construction assisting tool according to claim 1 or 2, characterized in that: the upper support (12) and the lower support (13) which are positioned above and below the seam (11) are connected through four screw rods (15), and two ends of each screw rod are fastened through nuts (9).

5. The telescopically adjustable prestressed concrete T-beam transverse widening construction assisting tool according to claim 1 or 2, characterized in that: the concrete pouring formwork comprises a formwork (14) which is arranged below a joint (11) and used for supporting concrete poured in the joint, wherein the formwork (14) is fixed between a support and a lower bridge floor through a screw (15).