阅读说明：本技术 一种钢筋混凝土板桁混合的拱结构 (Arch structure with mixed reinforced concrete plate girders ) 是由 牟廷敏 康玲 梁健 肖雨 范碧琨 李畅 何娇阳 孙才志 李胜 赵艺程 于 2019-11-18 设计创作，主要内容包括：本发明公开了一种钢筋混凝土板桁混合的拱结构,采用第一上弦钢管、第二上弦钢管、第一连接杆和第二连接杆作为顶板的骨架,第一下弦钢管、第二下弦钢管、第三连接杆和第四连接杆作为底板的骨架,腹杆作为腹板的骨架,在所述第一上弦钢管、第二上弦钢管、第一下弦钢管和第二下弦钢管中均填充混凝土,并在骨架外部浇筑外包钢筋混凝土,形成连续的混凝土板面组成闭合的箱型截面参与受力,而第二上弦钢管与对应的第二下弦钢管之间连接有桁架,作为箱型结构的内部支撑,提高吊装时的抗扭惯性矩,内部的桁架无需外包混凝土,有效提高施工效率,降低施工难度,减少质量控制环节,外包成拱快,降低施工风险,大幅缩短施工周期,节省施工成本。(The invention discloses a reinforced concrete plate and truss mixed arch structure, which adopts a first upper chord steel pipe, a second upper chord steel pipe, a first connecting rod and a second connecting rod as the framework of a top plate, a first lower chord steel pipe, a second lower chord steel pipe, a third connecting rod and a fourth connecting rod as the framework of a bottom plate, a web member as the framework of a web plate, concrete is filled in the first upper chord steel pipe, the second upper chord steel pipe, the first lower chord steel pipe and the second lower chord steel pipe, and outer wrapping reinforced concrete is poured outside the framework to form a closed box-shaped section formed by continuous concrete plate surfaces to participate in stress, a truss is connected between the second upper chord steel pipe and the corresponding second lower chord steel pipe to serve as the inner support of the box-shaped structure, the torsion-resistant inertia moment during hoisting is improved, the inner truss does not need to wrap the concrete, the construction efficiency is effectively improved, the construction difficulty is reduced, the quality control links are reduced, the outer covering arch forming is fast, the construction risk is reduced, the construction period is greatly shortened, and the construction cost is saved.)

1. The arch structure with the mixed reinforced concrete plate girders is characterized by comprising a body with a box-shaped structure, wherein the body comprises a top plate (1), a bottom plate (2), two webs (3) and a plurality of web pipes (8), and the top plate (1), the bottom plate (2) and all the webs (3) are reinforced concrete members;

two ends of the top plate (1) are respectively provided with two first upper chord steel pipes (41), two second upper chord steel pipes (42) are arranged between the two first upper chord steel pipes (41), a first connecting rod (51) is connected between the adjacent first upper chord steel pipes (41) and the adjacent second upper chord steel pipes (42), a second connecting rod (52) is connected between the two second upper chord steel pipes (42), and concrete is filled in all the first upper chord steel pipes (41) and all the second upper chord steel pipes (42);

two ends of the bottom plate (2) are respectively and correspondingly provided with two first lower chord steel tubes (61), two second lower chord steel tubes (62) are correspondingly arranged between the two first lower chord steel tubes (61), a third connecting rod (53) is connected between the adjacent first lower chord steel tubes (61) and the adjacent second lower chord steel tubes (62), a fourth connecting rod (54) is connected between the two second lower chord steel tubes (62), and concrete is filled in all the first lower chord steel tubes (61) and all the second lower chord steel tubes (62);

a web member (7) is connected between the first upper chord steel pipe (41) and the corresponding first lower chord steel pipe (61), and a web member (8) is connected between the second upper chord steel pipe (42) and the corresponding second lower chord steel pipe (62);

the concrete poured in the curved surface where the two first upper chord steel pipes (41) are positioned forms the top plate (1), the top plate (1) wraps all the first upper chord steel tubes (41), all the second upper chord steel tubes (42), all the first connecting rods (51) and all the second connecting rods (52), and concrete poured in a curved surface where the two first lower chord steel tubes (61) are located forms the bottom plate (2), the bottom plate (2) wraps all the first lower-chord steel tubes (61), all the second lower-chord steel tubes (62), all the third connecting rods (53) and all the fourth connecting rods (54), the first upper chord steel pipe (41) and the corresponding concrete poured in the curved surface of the first lower chord steel pipe (61) form the corresponding web (3), and the web (3) wraps all the corresponding web members (7).

2. A dome structure in accordance with claim 1 wherein the body comprises at least two segments.

3. Arch structure according to claim 2, wherein the first connecting rods (51) at both ends of a segment comprise channel steel members, the remaining first connecting rods (51) comprise angle steel members, the third connecting rods (53) at both ends of a segment comprise channel steel members, and the remaining third connecting rods (53) comprise angle steel members; all the second connecting rods (52) comprise channel steel members, all the fourth connecting rods (54) comprise channel steel members, the first connecting rods (51) are connected with the corresponding first upper chord steel pipes (41) and second upper chord steel pipes (42) in a welding mode, the third connecting rods (53) are connected with the corresponding first lower chord steel pipes (61) and second lower chord steel pipes (62) in a welding mode, the second connecting rods (52) are connected with the second upper chord steel pipes (42) in a welding mode, and the fourth connecting rods (54) are connected with the second lower chord steel pipes (62) in a welding mode.

4. Arch structure according to claim 3, characterized in that said second connecting rod (52) comprises two second connecting rod units, each comprising two welded-connection channel members, two adjacent second connecting rod units being bolted to a connecting plate, respectively.

5. Arch according to claim 2, wherein a first diagonal brace (91) is connected between two adjacent first connecting rods (51) of each segment located on the same side, and a second diagonal brace is connected between two adjacent third connecting rods (53) of each segment located on the same side.

6. Arch structure according to claim 1, characterised in that each of said web members (7) comprises an angle member.

7. An arch structure according to any of claims 1 to 6, wherein the box-like structure is internally spaced by a partition.

8. Arch structure according to any of claims 1-6, characterized in that the strength of the concrete in the first upper chord steel tube (41), the strength of the concrete in the second upper chord steel tube (42), the strength of the concrete in the first lower chord steel tube (61) and the strength of the concrete in the second lower chord steel tube (62) are all the same, and the concrete strength of the top plate (1), bottom plate (2) and web (3) are all less than the concrete strength of the first upper chord steel tube (41).

9. Arch structure according to any of claims 1-6, characterized in that the diameter of all the first upper chord steel tubes (41), the diameter of all the first lower chord steel tubes (61), the diameter of all the second upper chord steel tubes (42) and the diameter of all the second lower chord steel tubes (62) are identical, the diameter of all the web tubes (8) is identical, the diameter of the web tubes (8) is smaller than the diameter of the first upper chord steel tubes (41).

Technical Field

The invention relates to the technical field of bridge engineering, in particular to an arch structure with a reinforced concrete plate girder mixed.

Background

The main arch box type structure of the arch bridge at home and abroad is mostly of a reinforced concrete structure, a single-box single-chamber structure and a single-box multi-chamber structure are adopted, and a web plate is usually added in a box chamber to improve the rigidity of the section of the box type structure.

In construction, the arch ring framework is usually installed into an arch, and then reinforced concrete is wrapped outside the top plate, the bottom plate and all web plates to form a box-type main arch. But because the arch structure is the arc structure, it is higher to set up the template degree of difficulty at the inside position of arch case structure, and the template expense is higher to pour the difficulty, difficult pouring is closely knit, therefore construction cycle is longer, appears quality problems easily, reduces the reliability of bridge.

Disclosure of Invention

The invention aims to overcome the defects that the construction difficulty of a main arch box type structure is high, the cost is high, the period is long, the construction quality is not easy to control and the like when a concrete structure is wrapped on a web structure in the prior art, and provides an arch structure with a mixed reinforced concrete plate girder.

In order to achieve the purpose, the invention provides the following technical scheme:

an arch structure with a mixed reinforced concrete plate girder comprises a body with a box-shaped structure, wherein the body comprises a top plate, a bottom plate, two webs and a plurality of web pipes, and the top plate, the bottom plate and all the webs are reinforced concrete members;

two ends of the top plate are respectively provided with two first upper chord steel pipes, two second upper chord steel pipes are arranged between the two first upper chord steel pipes, a first connecting rod is connected between the adjacent first upper chord steel pipes and the adjacent second upper chord steel pipes, a second connecting rod is connected between the two second upper chord steel pipes, and concrete is filled in all the first upper chord steel pipes and all the second upper chord steel pipes;

two ends of the bottom plate are respectively and correspondingly provided with two first lower chord steel pipes, two second lower chord steel pipes are correspondingly arranged between the two first lower chord steel pipes, a third connecting rod is connected between the adjacent first lower chord steel pipes and the adjacent second lower chord steel pipes, a fourth connecting rod is connected between the two second lower chord steel pipes, and concrete is filled in all the first lower chord steel pipes and all the second lower chord steel pipes;

a web member is connected between the first upper chord steel pipe and the corresponding first lower chord steel pipe, and a web member is connected between the second upper chord steel pipe and the corresponding second lower chord steel pipe;

the top plate is formed by concrete poured in the curved surface of the two first upper chord steel tubes, the top plate wraps all the first upper chord steel tubes, all the second upper chord steel tubes, all the first connecting rods and all the second connecting rods, the bottom plate wraps all the first lower chord steel tubes, all the second lower chord steel tubes, all the third connecting rods and all the fourth connecting rods, the corresponding web plates are formed by the concrete poured in the curved surface of the first upper chord steel tubes and the corresponding first lower chord steel tubes, and the corresponding web plates wrap all the corresponding web rods.

The invention adopts a reinforced concrete plate and truss mixed arch structure, adopts a first upper chord steel pipe, a second upper chord steel pipe, a first connecting rod and a second connecting rod as the framework of a top plate, adopts a first lower chord steel pipe, a second lower chord steel pipe, a third connecting rod and a fourth connecting rod as the framework of a bottom plate, adopts a web member as the framework of a web plate, and prefabricated and spliced all parts in blocks and sections to form an integral framework, and has convenient processing and stable structure, wherein the first upper chord steel pipe, the second upper chord steel pipe, the first lower chord steel pipe and the second lower chord steel pipe are all steel pipes arranged along the longitudinal bridge direction, the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are all connecting members arranged along the transverse bridge direction and are arranged among the corresponding upper chord pipes or lower chord pipes at intervals, and concrete is filled in the first upper chord steel pipe, the second upper chord steel pipe, the first lower chord steel pipe and the second lower chord steel pipe, and the exterior reinforced concrete is poured outside the framework to form a closed box-shaped section formed by continuous concrete panels to participate in stress, the exterior arch forming speed is high, the template is convenient to erect, a truss is connected between the second upper chord steel tube and the corresponding second lower chord steel tube to be used as the internal support of the box-shaped structure, the torsional moment of inertia during hoisting is improved, the web members of the internal truss are made of steel tubes, the stability of the web members are high, strong and weak shafts are not present, the exterior reinforced concrete is not required to be coated, the construction efficiency is effectively improved, the construction difficulty is reduced, quality control links are reduced, the exterior arch forming speed is high, the construction risk is reduced, the construction period is greatly shortened, the construction cost is saved, the rigidity and the bearing capacity can be effectively met, the structure weight can be reduced, the number of segment assembly is reduced, the installation difficulty is reduced, the safety risk in the construction stage is reduced, the construction period is shortened, and the anti-seismic performance is obviously improved.

Preferably, the body comprises at least two segments.

Preferably, the first connecting rods at the two ends of the segment comprise channel steel members, the rest of the first connecting rods comprise angle steel members, the third connecting rods at the two ends of the segment comprise channel steel members, and the rest of the third connecting rods comprise angle steel members; all the second connecting rods comprise channel steel members, all the fourth connecting rods comprise channel steel members, the first connecting rods are connected with the corresponding first upper chord steel tubes and the corresponding second upper chord steel tubes in a welded mode, the third connecting rods are connected with the corresponding first lower chord steel tubes and the corresponding second lower chord steel tubes in a welded mode, the second connecting rods are connected with the second upper chord steel tubes in a welded mode, and the fourth connecting rods are connected with the second lower chord steel tubes in a welded mode.

For transportation hoist and mount convenience, the body divides into a plurality of segmental along the bridge length direction, the first connecting rod and the third connecting rod of the both ends of every segmental all contain the channel-section steel component, the first connecting rod and the third connecting rod of all the other positions all contain the angle steel component to strengthen the rigidity of segmental tip.

Further preferably, the second connecting rod comprises two second connecting rod units, each second connecting rod unit comprises two welded channel steel members, and two adjacent second connecting rod units are respectively bolted to the connecting plate.

By adopting the arrangement mode, the box-type body can be hoisted by left and right sections conveniently, namely, each section comprises a left part and a right part which are assembled to form the box-type body, and hoisting is further facilitated.

Further preferably, a first inclined strut is connected between two adjacent first connecting rods located on the same side in each segment, and a second inclined strut is connected between two adjacent third connecting rods located on the same side in each segment.

And the first inclined strut and the second inclined strut are used for further enhancing the rigidity of the structure, and are also positioned in the corresponding top plate concrete and the corresponding bottom plate concrete.

Preferably, each said web member comprises an angle member.

Preferably, the box structure is internally provided with partition plates at intervals, the partition plates are wrapped with concrete, and the partition plates are provided with holes.

By adopting the arrangement mode, the torsion resistance during hoisting is further improved.

Preferably, the strength of the concrete in the first upper chord steel pipe, the strength of the concrete in the second upper chord steel pipe, the strength of the concrete in the first lower chord steel pipe and the strength of the concrete in the second lower chord steel pipe are the same, and the strength of the concrete in the top plate, the bottom plate and the web plate is less than that of the concrete in the first upper chord steel pipe.

The strength of the outer concrete is lower than that of the concrete in the framework, and cost saving is facilitated.

Preferably, the diameters of all the first upper chord steel tubes, the diameters of all the first lower chord steel tubes, the diameters of all the second upper chord steel tubes and the diameters of all the second lower chord steel tubes are the same, the diameters of all the web tubes are the same, and the diameters of the web tubes are smaller than the diameters of the first upper chord steel tubes.

In summary, compared with the prior art, the invention has the beneficial effects that:

1. the arch structure with the mixed reinforced concrete plate girders, provided by the invention, not only can effectively meet the rigidity and the bearing capacity, but also can reduce the weight of the structure, reduce the installation difficulty, reduce the safety risk in the construction stage, improve the reliability of the structure, shorten the construction period and obviously improve the earthquake resistance.

Description of the drawings:

fig. 1 is a schematic structural view of a reinforced concrete slab-truss hybrid arch structure according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken at B-B in FIG. 1;

FIG. 4 is a schematic structural view of the skeleton of FIG. 3;

FIG. 5 is a top view of the construction of the framework of the modular arch structure of the present invention;

FIG. 6 is a view taken along line B of FIG. 5;

fig. 7 is a cross-sectional view taken at a-a in fig. 5.

The labels in the figure are: 1-top plate, 2-bottom plate 3-web plate, 41-first upper chord steel pipe, 42-second upper chord steel pipe, 51-first connecting rod, 52-second connecting rod, 53-third connecting rod, 54-fourth connecting rod, 61-first lower chord steel pipe, 62-second lower chord steel pipe, 7-web member, 8-web member and 91-first diagonal brace.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.