CN115478468A - Assembled reinforced concrete T-shaped beam bridge - Google Patents

Abstract

The invention discloses an assembly type reinforced concrete T-shaped girder bridge, which comprises a plurality of span sections, wherein each span section comprises a plurality of prefabricated parts, adjacent prefabricated parts on the same span section are connected through a first corrugated connecting edge, adjacent prefabricated parts on adjacent span sections are connected through a second corrugated connecting edge, the first corrugated connecting edges on the adjacent span sections are in smooth transition, and the second corrugated connecting edges on the adjacent prefabricated parts are in smooth transition; first ripple connects the limit and the second ripple connects the edge and all is provided with the blotter, through connecting piece fixed connection between the blotter. The fabricated reinforced concrete T-shaped bridge can solve the problem that the service life of the bridge is influenced because dislocation is easy to occur between fabricated bridge prefabricated parts in the prior art.

Description

A prefabricated reinforced concrete T-beam bridge

technical field

The invention relates to the technical field of T-beam bridges, in particular to an assembled reinforced concrete T-beam bridge.

Background technique

The T-beam bridge is a beam-on-beam bridge with T-beam as the main load-bearing structure. When the load on the bridge produces a positive bending moment, the beam is made into such a T-shape with a large top and a small bottom, and the reinforcement at the lower edge makes full use of the concrete's resistance. The high compressive strength and the high tensile strength of the steel bars save materials and reduce the self-weight compared with the rectangular beam bridge. However, it is not suitable for the situation that the load will produce a large negative bending moment, and the stability of torsional stiffness is lower than that of box girder bridges.

Chinese patent CN114808659A discloses a small and medium-sized span self-balancing assembled reinforced concrete emergency bridge and its application. The arc-shaped prefabricated parts are assembled through the mortise and tenon structure to form the upper arch bridge, and the lower arch bridge includes several arc-shaped prefabricated parts, and the prefabricated parts are assembled through the tenon and tenon structure to form the lower arch bridge. In this patent, the prefabricated parts are assembled through the mortise and tenon structure, and the rigid contact between the prefabricated parts affects the transmission of force, which makes misalignment easily occur between adjacent prefabricated parts and affects the service life of the bridge.

Contents of the invention

The purpose of the present invention is to provide a prefabricated reinforced concrete T-shaped bridge, which solves the problem that the prefabricated parts of the existing prefabricated bridge are prone to misalignment and affects the service life of the bridge.

In order to achieve the above object, the present invention provides a prefabricated reinforced concrete T-beam bridge, which includes several spans, each span includes several prefabricated parts, and the adjacent prefabricated parts on the same span pass through the first One corrugated connection edge connection, the adjacent prefabricated parts on the adjacent spans are connected by the second corrugated connection edge, the first corrugated connection edge on the adjacent span section has a smooth transition, and the second corrugated connection edge on the adjacent prefabricated parts Smooth transition; buffer pads are arranged on the first corrugated connecting side and the second corrugated connecting side, and the buffer pads are fixedly connected by connecting pieces.

Preferably, there are six spans, which are the first span, the second span, the third span, the fourth span, the fifth span and the sixth span with equal width and length.

Preferably, eight prefabricated parts are arranged on each span section, which are the first prefabricated part, the second prefabricated part, the third prefabricated part, the fourth prefabricated part, the fifth prefabricated part and the sixth prefabricated part with equal width and length. , the seventh prefab and the eighth prefab.

Preferably, the arc length radius of the first corrugated connection side is 1000mm-1100mm.

Preferably, the arc length radius of the second corrugated connection side is 100mm-150mm.

Preferably, the buffer pad is a rubber buffer pad, and the buffer pad is fixedly arranged on the first corrugated connection edge and the second corrugated connection edge of each preform, and is tightly connected to the first corrugated connection edge and the second corrugated connection edge. fit.

Preferably, the thickness of the buffer pad on the first corrugated connection side is 80mm-120mm; the thickness of the buffer pad on the second corrugated connection side is 40mm-60mm.

Preferably, the connecting piece is an angle steel, and the angle steel includes a connecting plate one and a connecting plate two arranged vertically, and a triangular reinforcing plate is arranged between the connecting plate one and the connecting plate two; the connecting plate one is fixedly connected with the buffer pad through a high-strength bolt , the second connecting plate is fixedly connected with the angle steel on the adjacent prefabricated part through high-strength bolts.

Preferably, the width of the first connecting plate of the connecting member is not greater than the width of the buffer pad.

The advantages and positive effects of the prefabricated reinforced concrete T-beam bridge of the present invention are:

1. The adjacent prefabricated parts of the same span are connected by the first corrugated connecting edge, and the adjacent prefabricated parts of the adjacent span are connected by the second corrugated connecting edge, so that the adjacent prefabricated parts can be better It is more conducive to the transmission of loads, reduces the displacement of prefabricated parts, improves the seismic performance of the bridge deck, and improves the stability of the bridge structure.

2. Rubber buffer pads are set between adjacent prefabricated parts, which can buffer the longitudinal and transverse impact forces between adjacent T-beams, so that the bearing capacity can be well transmitted between adjacent prefabricated parts and reduce the pressure of prefabricated parts. The phenomenon of staggering between parts can improve the bearing capacity and service life of the bridge.

3. The buffer pads on the adjacent prefabricated parts are connected by angle steel, which improves the connection strength of the buffer pads of the adjacent prefabricated parts, and enables the adjacent buffer pads to be in close contact, reducing the problem of bridge leakage and water seepage, and improving the strength of the bridge and service life.

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is the structural representation of a kind of fabricated reinforced concrete T-shaped bridge embodiment of the present invention;

Fig. 2 is the structural representation of the M1 type prefabricated part of a kind of prefabricated reinforced concrete T-shaped bridge embodiment of the present invention;

Fig. 3 is the structural representation of the M2 type prefabricated part of a kind of prefabricated reinforced concrete T-shaped bridge embodiment of the present invention;

Fig. 4 is the structural representation of the M3 type prefabricated part of a kind of prefabricated reinforced concrete T-shaped bridge embodiment of the present invention;

Fig. 5 is a schematic structural view of the M4 type prefabricated part of an embodiment of a prefabricated reinforced concrete T-shaped bridge of the present invention;

Fig. 6 is a schematic structural view of the M5 type prefabricated part of an embodiment of a prefabricated reinforced concrete T-shaped bridge of the present invention;

Fig. 7 is a schematic structural view of the M6 type prefabricated part of an embodiment of a prefabricated reinforced concrete T-shaped bridge of the present invention;

Fig. 8 is a structural schematic diagram of the M7 type prefabricated part of an embodiment of a prefabricated reinforced concrete T-shaped bridge of the present invention;

Fig. 9 is a structural schematic diagram of an M8 type prefabricated part of an embodiment of a prefabricated reinforced concrete T-shaped bridge of the present invention;

Fig. 10 is a side view structural schematic diagram of a prefabricated part of an embodiment of a prefabricated reinforced concrete T-shaped bridge of the present invention;

Fig. 11 is a side view structural schematic diagram of a connector of an embodiment of a prefabricated reinforced concrete T-shaped bridge of the present invention;

Fig. 12 is a top view structural diagram of a connector of an embodiment of a prefabricated reinforced concrete T-shaped bridge according to the present invention.

reference sign

1. The first span; 2. The second span; 3. The third span; 4. The fourth span; 5. The fifth span; 6. The sixth span; 7. The first prefab; 8 , second prefabricated part; 9, third prefabricated part; 10, fourth prefabricated part; 11, fifth prefabricated part; 12, sixth prefabricated part; 13, seventh prefabricated part; 14, eighth prefabricated part; 15, 16, the second corrugated connecting edge; 17, buffer pad; 18, angle steel; 19, connecting plate one; 20, connecting plate two; 21, reinforcing plate; 22, threaded hole.

detailed description

The technical solutions of the present invention will be further described below through the accompanying drawings and embodiments.

Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other elements or items. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "Down", "Left", "Right" and so on are only used to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

Example

Fig. 1 is a schematic structural view of an embodiment of a prefabricated reinforced concrete T-shaped bridge of the present invention, and Fig. 10 is a schematic side view of a prefabricated structure of an embodiment of a prefabricated reinforced concrete T-shaped bridge of the present invention. As shown in the figure, a prefabricated reinforced concrete T-beam bridge includes several spans. In this embodiment, there are six spans, which are the first span 1, the second span 2, the third span 3, the fourth span 4, the fifth span 5 and the sixth span with equal width and length. Span 6. The total length of the bridge is 32150mm, and the length of each span is 5358mm. Each span consists of several prefabs. In this embodiment, eight prefabricated parts are arranged on each span section, which are the first prefabricated part 7, the second prefabricated part 8, the third prefabricated part 9, the fourth prefabricated part 10, and the fifth prefabricated part in sequence. 11, the sixth preform 12, the seventh preform 13 and the eighth preform 14. The width of the bridge is 8000mm, the width of each prefab is 1000mm, the height of the prefab is 1000mm, the thickness of the flange is 200mm, and the width of the beam rib is 200mm.

Adjacent preforms on the same span are connected by first corrugated connecting edges 15 , and adjacent preforms on adjacent spans are connected by second corrugated connecting edges 16 . The first corrugated connection edge 15 on each preform is slightly different from the second corrugated connection edge 16, so that the first corrugated connection edge 15 on the adjacent span section has a smooth transition, and the second corrugated connection edge on the adjacent preform 16 smooth transitions.

The arc length radius of the first corrugated connecting edge 15 is 1000mm-1100mm, preferably 1047mm. The arc length radius of the second corrugated connecting edge 16 is 100mm-150mm, preferably 125mm.

In this embodiment, there are 48 pieces of prefabricated parts, and there are 8 structural types of the prefabricated parts. The structures of the 8 prefabricated parts are shown in Fig. 2-Fig. 9 respectively. The structure type corresponding to each prefab is shown in the table below:

The first corrugated connection edge 15 and the second corrugated connection edge 16 are all provided with a buffer pad 17, the buffer pad 17 is a rubber buffer pad 17, and the buffer pad 17 is fixedly arranged on the first corrugated connection edge 15 and the second corrugated connection edge of each prefabricated part. The second corrugated connecting edge 16 is closely attached to the first corrugated connecting edge 15 and the second corrugated connecting edge 16 . The buffer pad 17 is glued and fixed on the first corrugated connection side 15 and the second corrugated connection side 16 , and just covers the entire first corrugated connection side 15 and the second corrugated connection side 16 . The thickness of the buffer pad 17 on the first corrugated connection side 15 is 80mm-120mm, preferably 100mm. The thickness of the buffer pad 17 on the second corrugated connection side 16 is 40mm-60mm, preferably 50mm.

Rubber buffer pads 17 are set between adjacent prefabricated parts, which can buffer the longitudinal and transverse impact forces between adjacent T-beams, so that the bearing capacity can be well transmitted between adjacent prefabricated parts, and the prefabricated parts can be lightened. The phenomenon of dislocation and staggered platform between bridges can improve the bearing capacity and service life of the bridge.

Fig. 11 is a side view structural schematic diagram of a connector of an embodiment of a prefabricated reinforced concrete T-shaped bridge of the present invention, and Fig. 12 is a schematic diagram of a top view structure of a connector of an embodiment of a prefabricated reinforced concrete T-shaped bridge of the present invention. As shown in the figure, the buffer pads 17 are fixedly connected by connecting pieces. The connector is an angle steel 18, and the angle steel 18 includes a connecting plate one 19 and a connecting plate two 20 arranged vertically, and a triangular reinforcing plate 21 is arranged between the connecting plate one 19 and the connecting plate two 20, and the reinforcing plate 21 is used for the angle steel 18. Strength is strengthened. Connecting plate one 19 and connecting plate two 20 are all provided with threaded holes 22, connecting plate one 19 is fixedly connected with buffer pad 17 by high-strength bolts, connecting plate two 20 is fixedly connected with angle steel 18 on the adjacent prefabricated part by high-strength bolts. The width of the first connecting plate 19 of the connector is not greater than the width of the buffer pad 17 . The buffer pads 17 on the adjacent prefabricated parts are connected by the angle steel 18, which improves the connection strength of the buffer pads 17 of the adjacent prefabricated parts, and enables the adjacent buffer pads 17 to be in close contact, reducing the problem of bridge leakage and water seepage, and improving the quality of the bridge. strength and service life.

In this embodiment, the width and height of the connecting piece are both 80 mm, and the length is 100 mm.

The number and size of spans and prefabricated parts of the bridge in the present invention can be adjusted according to the actual length and width of the bridge, and the radii of the first corrugated connecting side and the second corrugated connecting side can also be adjusted according to actual needs.

Therefore, the present invention adopts the above-mentioned prefabricated reinforced concrete T-shaped bridge, which can solve the problem that the prefabricated parts of the existing prefabricated bridge are prone to misalignment and affect the service life of the bridge.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it still Modifications or equivalent replacements can be made to the technical solutions of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention.

Claims (9)

1. The utility model provides an assembled reinforced concrete T type girder bridge which characterized in that: the prefabricated part cross structure comprises a plurality of cross sections, wherein each cross section comprises a plurality of prefabricated parts, adjacent prefabricated parts on the same cross section are connected through a first corrugated connecting edge, adjacent prefabricated parts on the adjacent cross sections are connected through a second corrugated connecting edge, the first corrugated connecting edges on the adjacent cross sections are in smooth transition, and the second corrugated connecting edges on the adjacent prefabricated parts are in smooth transition; first ripple connects the limit and the second ripple connects the edge and all is provided with the blotter, through connecting piece fixed connection between the blotter.

2. An assembled reinforced concrete T-beam bridge according to claim 1, wherein: the six spans are sequentially a first span, a second span, a third span, a fourth span, a fifth span and a sixth span which are equal in width and length.

3. An assembled reinforced concrete T-beam bridge according to claim 1, wherein: eight prefabricated members are arranged on each span, namely a first prefabricated member, a second prefabricated member, a third prefabricated member, a fourth prefabricated member, a fifth prefabricated member, a sixth prefabricated member, a seventh prefabricated member and an eighth prefabricated member which are equal in width and length in sequence.

4. An assembled reinforced concrete T-beam bridge according to claim 1, wherein: the arc length radius of the first corrugated connecting edge is 1000mm-1100mm.

5. An assembled reinforced concrete T-beam bridge according to claim 1, characterized in that: the arc length radius of the second corrugated connecting edge is 100mm-150mm.

6. An assembled reinforced concrete T-beam bridge according to claim 1, wherein: the blotter is the blotter of rubber, and the fixed edge and the second ripple of connecting of the first ripple that sets up at every prefab of blotter to be connected the edge with first ripple, the second ripple and be connected the edge and closely laminate.

7. An assembled reinforced concrete T-beam bridge according to claim 1, characterized in that: the thickness of the cushion pad on the first corrugated connecting edge is 80mm-120mm; the thickness of the cushion pad on the second corrugated connecting edge is 40mm-60mm.

8. An assembled reinforced concrete T-beam bridge according to claim 1, wherein: the connecting piece is angle steel which comprises a first connecting plate and a second connecting plate which are vertically arranged, and a triangular reinforcing plate is arranged between the first connecting plate and the second connecting plate; the first connecting plate is fixedly connected with the cushion pad through the high-strength bolt, and the second connecting plate is fixedly connected with the angle steel on the adjacent prefabricated member through the high-strength bolt.

9. An assembled reinforced concrete T-beam bridge according to claim 8, wherein: the width of the first connecting plate of the connecting piece is not larger than that of the cushion pad.

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