CN213653168U

CN213653168U - Bridge with novel bridge tower

Info

Publication number: CN213653168U
Application number: CN202021871795.0U
Authority: CN
Inventors: 潘龙; 何永龙; 涂雪; 杨前彪
Original assignee: Shanghai Ruiqiao Civil Engineering Consulting Co ltd
Current assignee: Shanghai Ruiqiao Civil Engineering Consulting Co ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-07-09
Anticipated expiration: 2030-09-01

Abstract

The utility model discloses a bridge with a novel bridge tower, which comprises a bridge tower, a bridge and a pier, wherein the bridge is arranged to be connected with the pier through a bearing platform, the bridge tower is arranged on the bridge, the bridge tower is arranged to be an A-shaped leaning tower, the bridge tower comprises an upper tower column, a lower tower column and a bridge tower boundary beam from top to bottom, and the upper tower column is of a steel box structure; the lower tower column is of a concrete structure, the upper tower column is connected with the lower tower column, the lower tower column is connected with the bearing platform, the bridge tower boundary beam is connected with the lower tower column, the bridge tower is provided with a stay cable, one end of the stay cable is fixed on the upper tower column, and the other end of the stay cable is fixed on the bridge tower boundary beam. The utility model discloses a bridge with novel pylon has more for pleasing to the eye tower bridge, and molding graceful, lines are smooth, and the cable force is balanced, simple structure, and the basis scale is little, construction convenience and with low costs.

Description

Bridge with novel bridge tower

Technical Field

The utility model relates to a shape structure of bridge especially relates to a bridge with novel pylon.

Background

Since the bridge is reformed and opened, large-scale construction is welcomed in China. With the continuous improvement of design concept, the gradual development of calculation method and the increasingly mature construction technology, the bridge with various shapes and colors is developed. Including cable-stay bridge in present conventional bridge, conventional cable-stay bridge has conventional bridge tower usually, and its cable sets up basic symmetry, and the form is old, and current tilting single tower cable-stay bridge divides two kinds: one with and without a back cord; for the single-tower cable-stayed bridge with the back cable, the stay cable is anchored on the main beam or outside the main beam, so that the cable force of the back cable can increase the stress of the bridge tower and is not beneficial to the stress balance of the bridge tower foundation; for the single-tower cable-stayed bridge without the back cable, the back cable and the single-side stay cable are lacked, so that the single-tower cable-stayed bridge has larger unbalanced force on the bridge tower under the action of automobiles and crowds.

Disclosure of Invention

In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that present cable-stay bridge's cable sets up the symmetry, and the form is old, and the unbalanced and structural design of stay cable's cable-force is complicated. The utility model discloses a bridge with novel bridge tower sets up back of the body cable, and back of the body cable is the anchor at the bridge tower boundary beam, and pylon, batter cable form the triangle structure on bridge tower boundary beam, the bridge tower like this, and the bridge tower boundary beam concreties with the bridge tower, and the moment of flexure that the power of being equivalent to back of the body cable produced the bridge tower is partly balanced by the bridge tower boundary beam. The force generated by the load of the automobile and the crowd can enable the bridge tower boundary beam, the upper tower column of the bridge tower and the inhaul cable to rotate simultaneously, and the bridge tower has high bearing capacity and good stability.

In order to achieve the purpose, the utility model provides a bridge with a novel bridge tower, which comprises a bridge tower, a bridge and a pier, wherein the bridge is arranged to be connected with the pier through a bearing platform, the bridge tower is arranged on the bridge, the bridge tower is arranged to be an A-shaped leaning tower, the bridge tower comprises an upper tower column, a lower tower column and a bridge tower boundary beam from top to bottom, and the upper tower column is of a steel box structure; the lower tower column is of a concrete structure, the upper tower column is connected with the lower tower column, the lower tower column is connected with the bearing platform, the bridge tower boundary beam is connected with the lower tower column, the bridge tower is provided with a stay cable, one end of the stay cable is fixed on the upper tower column, the other end of the stay cable is fixed on the bridge tower boundary beam, the stay cable comprises a back cable, one end of the back cable is fixed on the upper tower column, and the other end of the back cable is fixed on the bridge tower boundary beam.

Further, the bridge tower specifically comprises 8 tower column sections, 2 tower tip sections, 2 tower foot sections and 2 bridge tower boundary beams, wherein the tower column sections, the tower tip sections and the tower foot sections form an A shape in the transverse bridge direction, and form an L shape together with the bridge tower boundary beams in the bridge direction.

Furthermore, the bridge tower boundary beam is respectively connected with the concrete tower column foot and the bearing platform.

Further, each pylon edge beam comprises 2 segments.

Further, the tower column segment is set to be 5-13 m, and the weight is 13.8-46.7 t.

Furthermore, the section size of the tower column segment is 2.0m along the transverse bridge direction, and the size of the tower is gradually changed along the bridge direction to be 2.646-4.027 m; the cross section of the tower column segment is a rectangular cross section, a middle web is arranged along the longitudinal bridge direction of the cross section of the tower tip segment, the tower column segment is of a single-box double-chamber structure, the wall plate and the middle web of the tower tip segment are 16mm thick, and the wall plate of the tower column segment is 20mm thick.

Furthermore, the tower column segment and the tower tip segment comprise side wall plates, front wall plate stiffening ribs and rear wall plate stiffening ribs, and the specifications of the side wall plates, the front wall plate stiffening ribs and the rear wall plate stiffening ribs are 12mm multiplied by 120 mm.

Furthermore, every pylon festival section sets up the stull roof beam, and stull roof beam thickness sets up to 12mm, still includes horizontal stiffening rib between the stull roof beam, and the thickness of horizontal stiffening rib is 12 mm.

Furthermore, a circular end-shaped manhole with the length of 900mm and the diameter of the cross section of 600mm and a corresponding pedestrian stair are arranged on the transverse partition beam; and stiffening ribs with the thickness of 8mm are arranged around the round-end-shaped manhole.

Furthermore, the tower further comprises a longitudinal L-shaped beam, and two ends of the longitudinal L-shaped beam are provided with inhaul cables to be connected with the tower tip.

Technical effects

The utility model discloses a bridge with novel bridge tower has more for pleasing to the eye tower bridge, and molding graceful, lines are smooth, and stay cable power is balanced, simple structure, and the basis scale is little, construction convenience and with low costs. The bridge is fixedly connected with the bridge tower, so that part of the bending moment of the bridge tower is borne, and the load on the abutment and the pile foundation is reduced; the cable is connected with the stayed cable of the bridge tower and can bear the load of the upper stayed cable; the L-shaped beam simultaneously shares two parts of loads of the main tower and the inhaul cable, so that the loads are balanced.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Drawings

Fig. 1 is an overall schematic view of a bridge pylon having a novel bridge pylon according to a preferred embodiment of the present invention;

fig. 2 is a schematic view of a bridge pylon having a novel bridge pylon according to a preferred embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a bridge pylon having a novel bridge pylon according to a preferred embodiment of the present invention;

fig. 4 is a perspective view of a bridge pylon having a novel bridge pylon according to a preferred embodiment of the present invention.

Detailed Description

This embodiment will illustrate a bridge with a novel bridge tower according to this embodiment by taking a specific example, as shown in fig. 1, and an overall structure of a bridge with a novel bridge tower according to this embodiment is shown in the figure, in this embodiment, a stressed structure of a bridge beam is a prestressed concrete continuous beam, a full bridge span is 26+3 × 40m, and a full length is 146 m. The bridge is a steel box girder, the bridge tower is an A-shaped leaning tower, the tower column of the A-shaped leaning tower in the embodiment is a broken line type bridge tower, the lower part of the tower column is an L-shaped bridge tower, the tower height is 59m, the full width of a main span (the span with the most stayed cables) of the bridge is 19m, 11 pairs of stayed cables are arranged in the range of the main span, and an anchor cable area is arranged to anchor the stayed cables on the main span and is positioned in the range of 1.5m at the outermost side of the steel box girder; and 2 pairs of anchor cables are arranged on the side span, and the side span is anchored on the bridge tower side beam by adopting the lug plate.

As shown in fig. 2, 3 and 4, the bridge tower comprises an upper tower column and a lower tower column, which are totally divided into 10 tower column sections, wherein 2 sections are arranged at the tower tip 1, 8 sections are arranged at the tower column 2 (4 sections of the A-shaped tower column section), each section is 5m-13m long, and the weight is 13.8 t-46.7 t. The upper tower column is of a steel box structure, the lower tower column is of a concrete structure, and the steel-concrete combination section of the tower (the part where the upper tower column is connected with the lower tower column, namely the combination section of the steel structure and the concrete structure, also called a tower foot section) is 2 sections (belonging to the mixing stage of the steel structure and the concrete structure and not belonging to the 10 tower column sections, namely 12 sections in total for one bridge tower). A shear nail and an end force transmission steel bar are adopted between the tower foot section steel structure and the concrete structure as main components for transferring load.

The section size of the tower column 2 segment is 2.0m along the transverse bridge direction, and the size of the bridge tower gradually changes along the bridge direction and is 2.646-4.027 m. The section of the tower column section is in a rectangular section form, a middle web is arranged in the longitudinal bridge direction of the section of the tower tip section, and the middle web is in a single-box double-chamber structure (the tower tip section is in a steel box structure). The wall plates of the tower tip segment and the middle web plate are 16mm thick, and the wall plates of other segments are 20mm thick.

The specifications of the side wall plates, the front wall plate stiffening ribs and the rear wall plate stiffening ribs of the tower column 2 section and the tower tip 1 section are 12mm multiplied by 120 mm.

Every pylon segment sets up the beam of diaphragm, and the beam thickness of diaphragm is 12mm, establishes horizontal stiffening rib between the beam of diaphragm, and stiffening rib thickness is 12 mm. Wherein the transverse partition beams of the tower tip segment are dense without transverse stiffening ribs.

In order to ensure that people can smoothly reach any part of the bridge tower, the bridge tower is provided with a round end-shaped manhole with the length of 900mm and the diameter of the cross section of 600mm and a corresponding pedestrian stair on a transverse partition beam; and stiffening ribs with the thickness of 8mm are arranged around the manhole.

The bridge tower is provided with a longitudinal L-shaped beam, namely a bridge tower boundary beam 3, and two ends of the bridge tower boundary beam are provided with stay cables connected with the upper tower column. The lower tower column comprises a tower column base 4, and the tower column base 4 is solid concrete. The tower column foot 4 is in the range of 9.6m from the beam top of the steel box girder to the top of the bearing platform 5, the transverse bridge dimension is 2.5-4.35 m, and the forward bridge dimension is changed from 6.526m to 7 m. The tower column sections of the A-shaped bridge tower are inclined transversely to the bridge direction and are intersected at the tower tip, and the intersection angle is 33.470 degrees.

As shown in figure 1, the longitudinal stay cables are arranged in a fan shape, and the total number of the full bridges is 13, wherein 11 pairs are on the left side, and 2 pairs are on the right side, so that the stress balance of the bridge towers on the two sides can be ensured. The bridge tower boundary beam, the upper tower column of the bridge tower and the stayed cable form a triangular structure, and the bridge tower boundary beam is fixedly connected with the bridge tower, which is equivalent to the bending moment generated by the force of the back cable to the bridge tower, and is balanced by the bridge tower boundary beam. The stayed cables are all double cable surfaces, the main span 11 pairs of the cables are anchored on two sides of the beam, the anchor span 2 pairs of the cables are anchored on the side beam of the bridge tower, the cable distance of the main beam is 9m, and the standard cable distance on the tower is 1.5 m.

The two ends of the stay cable are both ear plates connected with the main beam and the bridge tower, and the structure is simple.

The bridge tower construction scheme of the embodiment is as follows: the number of the tower column segments is 8 (4 segments of the A-shaped tower column segment), the number of the tower tip segments is 2, and the pouring height is 5m-13 m. Scaffold pipe supports are erected on the first section and the second section of the starting section to serve as construction platforms, the vertical formwork is cast in place, and hydraulic creeping formwork construction processes are adopted on the rest sections. In order to ensure the construction progress, the tower column diaphragm beam adopts the erection support construction and is separated from the tower column for asynchronous construction. The concrete is constructed by adopting a pumping process. When the tower column is constructed, each tower column segment is provided with transverse partition beams, and transverse stiffening ribs are arranged between the transverse partition beams. In order to ensure the linear precision of the tower column curve, a pre-deviation amount is set during the measurement lofting. After the tower column is constructed to a certain height, an outward horizontal pre-jacking force is applied to the tower column to balance the inward horizontal component force generated by the self weight of the tower column, so that the cracking caused by overlarge stress at the root of the tower column is prevented. And bridge tower boundary beams are arranged at the tower legs to solve the problem of cable force balance.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. A bridge with a novel bridge tower is characterized by comprising the bridge tower, a bridge and a bridge pier, wherein the bridge is arranged to be connected with the bridge pier through a bearing platform, the bridge tower is arranged on the bridge, the bridge tower is arranged into an A-shaped leaning tower and comprises an upper tower column, a lower tower column and a bridge tower boundary beam from top to bottom, and the upper tower column is of a steel box structure; the lower tower column is of a concrete structure, the upper tower column is connected with the lower tower column, the lower tower column is connected with the bearing platform, the bridge tower boundary beam is connected with the lower tower column, the bridge tower is provided with a stay cable, one end of the stay cable is fixed on the upper tower column, the other end of the stay cable is fixed on the bridge tower boundary beam, the stay cable comprises a back cable, one end of the back cable is fixed on the upper tower column, the other end of the back cable is fixed on the bridge tower boundary beam, and the bridge tower boundary beam, the upper tower column of the bridge tower and the stay cable form a triangular structure.

2. The bridge with the novel bridge tower as claimed in claim 1, wherein the bridge tower comprises 8 tower column sections, 2 tower tip sections, 2 tower foot sections and 2 bridge tower boundary beams, the tower column sections, the tower tip sections and the tower foot sections form an A shape in the transverse bridge direction, and form an L shape together with the bridge tower boundary beams in the bridge direction.

3. A bridge with a novel pylon according to claim 2 wherein the pylon boundary beams are connected to the concrete pylon plinth and the cap respectively.

4. A bridge having a novel pylon according to claim 3 wherein each pylon boundary beam comprises 2 segments.

5. A bridge with a novel pylon according to claim 2 wherein the pylon segments are arranged to be 5 to 13m and weigh 13.8 to 46.7 t.

6. The bridge with the novel bridge tower as claimed in claim 5, wherein the cross-sectional dimension of the tower column section is 2.0m along the transverse bridge direction, and the cross-sectional dimension of the tower column section gradually changes along the bridge direction and is 2.646-4.027 m; the cross section of the tower column section is a rectangular cross section, a middle web plate is arranged in the longitudinal bridge direction of the cross section of the tower tip section, the tower column section is of a single-box double-chamber structure, the wall plate and the middle web plate of the tower tip section are 16mm thick, and the wall plate of the tower column section is 20mm thick.

7. A bridge having a novel pylon according to claim 6 wherein the column section and the tip section include side wall panels and front and rear wall panel stiffeners, each of the side wall panels and front and rear wall panel stiffeners being 12mm x 120mm in size.

8. A bridge with a novel tower according to claim 6, wherein each of said tower sections is provided with transverse beams, said transverse beams being provided with a thickness of 12mm, and further comprising transverse stiffeners between said transverse beams, said transverse stiffeners each being 12mm thick.

9. The bridge with the novel bridge tower as claimed in claim 8, wherein the transverse partition beams are provided with round-ended manholes with the length of 900mm and the cross-sectional diameter of 600mm and corresponding pedestrian stairs; and stiffening ribs with the thickness of 8mm are arranged around the round end-shaped manhole.

10. A bridge with a novel pylon as claimed in claim 2 further comprising a longitudinal L-shaped beam having cable-stays at both ends connected to the pylon tip.