阅读说明：本技术 中部无支撑的大跨度弧形钢结构及施工方法 (Large-span arc-shaped steel structure without support in middle and construction method ) 是由 张猛 李国栋 栾辉 余刚 李平 张权 于 2021-08-17 设计创作，主要内容包括：本发明涉及一种中部无支撑的大跨度弧形钢结构,其特征在于：包括并排设置在一起的型钢本体,所述型钢本体之间通过连接件连接,所述型钢本体的左端安装在左侧底座上,其右端安装在右侧底座上。还公开了上述中部无支撑的大跨度弧形钢结构的施工方法。本发明具有以下有益效果：本发明所述的中部无支撑的大跨度弧形钢结构及施工方法,对大跨度钢结构拱进行合理分段。采用本发明进行施工,可以完全抛弃传统的增加外支护的施工方式。因此,本发明与现有技术相比,本发明不仅具有不需要外支护的优点,而且还具有施工快捷方便、结构简单、施工质量好、成本低、稳定性好等优点。(The invention relates to a large-span arc-shaped steel structure without a support in the middle, which is characterized in that: including setting up the shaped steel body together side by side, connect through the connecting piece between the shaped steel body, the left end of shaped steel body is installed on the left side base, and its right-hand member is installed on the right side base. Also discloses a construction method of the large-span arc-shaped steel structure without the support in the middle. The invention has the following beneficial effects: the large-span arc-shaped steel structure without the support in the middle and the construction method reasonably segment the large-span steel structure arch. The construction method can completely abandon the traditional construction mode of adding the outer support. Therefore, compared with the prior art, the invention has the advantages of no need of external support, quick and convenient construction, simple structure, good construction quality, low cost, good stability and the like.)

1. The utility model provides a large-span arc steel construction that middle part does not have support which characterized in that: including setting up the shaped steel body together side by side, connect through the connecting piece between the shaped steel body, the left end of shaped steel body is installed on the left side base, and its right-hand member is installed on the right side base.

2. The mid-unsupported large-span curved steel structure of claim 1, wherein: the structural steel body comprises a K-shaped structural part, the two ends of a straight rod of the K-shaped structural part are respectively connected with a beam A and a beam B, a beam A connecting seat is installed at the other end of the beam A, a beam B connecting seat is installed at the other end of the beam B, the two ends of an arc rod of the K-shaped structural part are respectively connected with an arc beam A and an arc beam B, an arc beam A connecting seat is arranged at the other end of the arc beam A, an arc beam B connecting seat is arranged at the other end of the arc beam B, the beam A connecting seat and the arc beam A connecting seat are fixed on a left side base, and the beam B connecting seat and the arc beam B connecting seat are fixed on a right side base.

3. The mid-unsupported large-span curved steel structure of claim 2, wherein: the connecting piece comprises a connecting rod A, a connecting rod B and a connecting rod C, adjacent K-shaped structural parts are connected through the connecting rod A, adjacent cross beams A are connected through the connecting rod B, and the connected cross beams B are connected through the connecting rod III.

4. The mid-unsupported large-span curved steel structure of claim 3, wherein: the K-shaped structural part comprises a middle straight pipe, the two ends of the middle straight pipe are respectively provided with a left end flange A and a right end flange A, the middle part of the middle straight pipe is fixedly provided with an upper limiting part, the middle straight pipe on the two sides of the upper limiting part is slidably sleeved with a sleeve ring A and a sleeve ring B, the sleeve ring A is hinged with a connecting rod A through a hinged seat A, the hinged seat C is hinged with a connecting rod B through a hinged seat B, an arc-shaped pipe is arranged below the middle straight pipe, the middle part of the arc-shaped pipe is provided with a lower limiting part matched with the upper limiting part, the two ends of the arc-shaped pipe are respectively provided with a hinged seat C hinged with the connecting rod A and a hinged seat D hinged with the connecting rod B, the two ends of the arc-shaped pipe are respectively provided with a left end flange B and a right end flange B, the left end flange A is connected with a tying screw rod A and is connected with the sleeve ring A through the tying screw rod A for dragging the sleeve ring A to be close to or far away from the left end flange A, and the right end flange A is provided with a drawknot screw B which is connected with the lantern ring B through the drawknot screw B and used for drawing the lantern ring B to be close to or far away from the right end flange A.

5. The mid-unsupported large-span curved steel structure of claim 4, wherein: the middle straight pipe is connected with the beam A through a tie screw A and a left end flange A, and the middle straight pipe is connected with the beam B through a tie screw B and a right end flange A.

6. The mid-unsupported large-span curved steel structure of claim 5, wherein: the drawknot screw A comprises a rod body, and 2-3 high-strength nuts are connected to the rod body in a threaded manner; the structure of the tie screw B is the same as that of the tie screw A, and a plurality of tie screws are distributed along the circumference of the central line of the middle circular straight pipe.

7. The mid-unsupported large-span curved steel structure of claim 6, wherein: the arc pipe is connected with the arc beam B through the right end flange B and the high-strength bolt, and the arc pipe is connected with the arc beam A through the left end flange B and the high-strength bolt.

8. The mid-unsupported large-span curved steel structure of claim 7, wherein: the lower limiting part is a ring-shaped part and is provided with a vertical gap matched with the lower limiting part, and the lower limiting part slides up and down along the gap and is limited to slide along the length direction of the middle circular straight pipe.

9. The mid-unsupported large-span curved steel structure of claim 8, wherein: the left side base and the left side base are steel columns, the crossbeam A is fixed at the top of the left side base through the crossbeam A connecting seat and the high-strength bolt, the arc-shaped beam A is fixed at the middle lower part of the left side base through the arc-shaped beam A connecting seat and the high-strength bolt, a supporting table for supporting the arc-shaped beam A connecting seat is arranged at the middle lower part of the left side base, and the crossbeam A connecting seat and the arc-shaped beam A connecting seat are flange plates.

10. The method for constructing a large-span arc-shaped steel structure with an unsupported middle part as claimed in claim 9, wherein: the method comprises the following steps:

s1: prefabricating a K-shaped structural member (1) in a factory, sleeving a lantern ring A (1.4) and a lantern ring B (1.5) on a middle circular straight pipe (1.1), welding a left end flange A (1.2) and a right end flange A (1.3) at two ends, connecting a cross beam A (2), the middle circular straight pipe (1.1) and the lantern ring A (1.4) by using a tie screw A (1.14), connecting the cross beam B (3), the middle circular straight pipe (1.1) and the lantern ring B (1.5) by using a tie screw B (1.15), hinging an arc pipe (13) with the lantern ring A (1.4) and the lantern ring B (1.5) respectively through a connecting rod A (1.8) and a connecting rod B (1.9), distributing the connecting rod A (1.8) and the connecting rod B (1.9) in an eight-shaped manner, and embedding a lower limiting member (1.11) into an upper limiting member (1.10);

s2: the left base and the right base are arranged at designated positions;

s3: hoisting the assembly assembled in the step 1, and respectively fixedly connecting the assembly with the left base and the right base;

s4: hoisting an arc beam A (6) and an arc beam B (7) to a specified position, connecting the arc beam A (6) with a left base and a left end flange B (1.12), and connecting the arc beam B (7) with a right end flange B (1.13) of a right base machine

S5: the included angle between the connecting rod A (1.8) and the connecting rod B (1.9) and the horizontal plane is further adjusted by adjusting the positions of the lantern ring A (1.4) and the lantern ring B (1.5), so that the force for supporting the middle circular straight pipe (1.1) is adjusted.

Technical Field

The invention relates to a large-span arc-shaped steel structure without a support in the middle and a construction method, and belongs to the technical field of building construction.

Background

The steel structure is a material which is used more in the building industry at present, is mainly formed by combining steel materials, is widely applied to large-scale plants, multi-storey civil houses and the like, is simpler to construct, and has shorter construction period. In addition, when a building constructed by the steel structure is dismantled, building garbage is hardly generated, and the steel can be recycled as steel, so that the steel is common in the current building industry. In addition, the steel structure industry can better adapt to and meet the current national economic construction requirements of China due to the economic and technical superiority, low carbon emission reduction, circular economy, industrialization and industrialized development, and becomes one of the emerging industries with wide market, numerous enterprises, continuous innovation and full of thriving vigor.

In prior art, when hoisting the large-span steel structure arch by the hoisting equipment, the hoisting is often carried out by adopting an external support building mode, so that the construction cost is increased, and the construction progress is influenced. Therefore, the construction mode of the existing large-span steel structure arch is not ideal enough and can not meet the requirement of buildings.

Disclosure of Invention

According to the defects in the prior art, the technical problems to be solved by the invention are as follows: in order to solve one of the problems, a large-span arc-shaped steel structure without a support in the middle and a construction method are provided.

The invention relates to a large-span arc-shaped steel structure without a support in the middle, which is characterized in that: including setting up the shaped steel body together side by side, connect through the connecting piece between the shaped steel body, the left end of shaped steel body is installed on the left side base, and its right-hand member is installed on the right side base.

Preferably, the section steel body comprises a K-shaped structural part, the two ends of a straight rod of the K-shaped structural part are respectively connected with a beam A and a beam B, a beam A connecting seat is installed at the other end of the beam A, a beam B connecting seat is installed at the other end of the beam B, the two ends of an arc rod of the K-shaped structural part are respectively connected with an arc beam A and an arc beam B, an arc beam A connecting seat is arranged at the other end of the arc beam A, an arc beam B connecting seat is arranged at the other end of the arc beam B, the beam A connecting seat and the arc beam A connecting seat are fixed on a left side base, and the beam B connecting seat and the arc beam B connecting seat are fixed on a right side base.

Preferably, the connecting piece comprises a connecting rod A, a connecting rod B and a connecting rod C, adjacent K-shaped structural parts are connected through the connecting rod A, adjacent cross beams A are connected through the connecting rod B, and the connected cross beams B are connected through a connecting rod III.

Preferably, the K-shaped structural member comprises a middle straight pipe, the two ends of the middle straight pipe are respectively provided with a left end flange a and a right end flange a, the middle part of the middle straight pipe is fixed with an upper limiting member, the middle straight pipe on two sides of the upper limiting member is slidably sleeved with a sleeve ring a and a sleeve ring B, the sleeve ring a is hinged with a connecting rod a through a hinged seat a, the hinged seat C is hinged with a connecting rod B through a hinged seat B, an arc-shaped pipe is arranged below the middle straight pipe, the middle part of the arc-shaped pipe is provided with a lower limiting member matched with the upper limiting member, the two ends of the arc-shaped pipe are respectively provided with a hinged seat C hinged with the connecting rod a and a hinged seat D hinged with the connecting rod B, the two ends of the arc-shaped pipe are respectively provided with a left end flange B and a right end flange B, the left end flange a is connected with a tie screw rod a, and is connected with the sleeve ring a through the tie screw rod a, the pulling device is used for pulling the lantern ring A to be close to or far away from the left end flange A, the right end flange A is provided with a tie screw B, and the tie screw B is connected with the lantern ring B and used for pulling the lantern ring B to be close to or far away from the right end flange A.

Preferably, the middle straight pipe and the beam A are connected together through a tie screw A and a left end flange A, and the middle straight pipe and the beam B are connected together through a tie screw B and a right end flange A.

Preferably, the drawknot screw A comprises a rod body, and 2-3 high-strength nuts are connected to the rod body in a threaded manner; the structure of the tie screw B is the same as that of the tie screw A, and a plurality of tie screws are distributed along the circumference of the central line of the middle circular straight pipe.

Preferably, the arc-shaped pipe is connected with the arc-shaped beam B through a right end flange B and a high-strength bolt, and the arc-shaped pipe is connected with the arc-shaped beam A through a left end flange B and a high-strength bolt.

Preferably, the lower limiting member is an annular member, the lower limiting member is provided with a vertical notch and is matched with the lower limiting member, and the lower limiting member slides up and down along the notch to limit the sliding along the length direction of the middle circular straight pipe.

Preferably, the left side base and the left side base are steel columns, the crossbeam A is fixed to the top of the left side base through a crossbeam A connecting seat and a high-strength bolt, the arc beam A is fixed to the middle lower portion of the left side base through an arc beam A connecting seat and a high-strength bolt, a supporting table for supporting the arc beam A connecting seat is arranged on the middle lower portion of the left side base, and the crossbeam A connecting seat and the arc beam A connecting seat are flanges.

The invention relates to a large-span arc-shaped steel structure without a support in the middle and a construction method, wherein the large-span arc-shaped steel structure without a support in the middle comprises the following steps of S1: prefabricating a K-shaped structural member in a factory, sleeving a lantern ring A and a lantern ring B on a middle circular straight pipe, welding a left end flange A and a right end flange A at two ends, connecting a beam A, the middle circular straight pipe and the lantern ring A by using a tie screw A, connecting the beam B, the middle circular straight pipe and the lantern ring B by using the tie screw B, hinging an arc-shaped pipe with the lantern ring A and the lantern ring B respectively through a connecting rod A and a connecting rod B, distributing the connecting rod A and the connecting rod B in a splayed manner, and embedding a lower limiting member into an upper limiting member;

s2: the left base and the right base are arranged at designated positions;

s3: hoisting the assembly assembled in the step 1, and respectively fixedly connecting the assembly with the left base and the right base;

s4: hoisting the arc beam A and the arc beam B to the specified positions, connecting the arc beam A with the left base and the left end flange B, and connecting the arc beam B with the right end flange B of the right base machine

S5: the included angles between the connecting rods A and B and the horizontal plane are further adjusted by adjusting the positions of the lantern ring A and the lantern ring B, so that the force for supporting the middle circular straight pipe is adjusted.

Compared with the prior art, the invention has the following beneficial effects: the large-span arc-shaped steel structure without the support in the middle and the construction method reasonably segment the large-span steel structure arch. The construction method can completely abandon the traditional construction mode of adding the outer support. Therefore, compared with the prior art, the invention has the advantages of no need of external support, quick and convenient construction, simple structure, good construction quality, low cost, good stability and the like.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a schematic structural view of a K-shaped structural member according to the present invention;

FIG. 4 is a partial method schematic view of a K-shaped structural member

In the figure: 1. the connecting device comprises a K-shaped structural part 1.1, a middle straight circular tube 1.2, a left end flange A1.3, a right end flange A1.4, a lantern ring A1.5, a lantern ring B1.6, a hinged seat C1.7, a hinged seat D1.8, a connecting rod A1.9, a connecting rod B1.10, an upper limiting part 1.11, a lower limiting part 1.12, a left end flange B1.13, a right end flange B1.14, a tie screw A1.15, a tie screw B1.16, a hinged seat A1.17, a hinged seat B2, a cross beam A3, a cross beam B4, a cross beam A connecting seat 5, a cross beam B connecting seat 6, an arc beam A7, an arc beam B8, an arc beam A connecting seat 9, an arc beam B connecting seat 10, a connecting rod A11, a connecting rod B12, a connecting rod C13 and an arc-shaped tube.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

the present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Examples

As shown in figures 1-4, the large-span arc-shaped steel structure without support in the middle comprises section steel bodies arranged side by side, the section steel bodies are connected through a connecting piece, the left end of each section steel body is installed on a left base, and the right end of each section steel body is installed on a right base.

In the embodiment, the section steel body comprises a K-shaped structural member 1, two ends of a straight rod of the K-shaped structural member 1 are respectively connected with a cross beam A2 and a cross beam B3, the other end of the cross beam A2 is provided with a cross beam A connecting seat 4, the other end of the cross beam B3 is provided with a cross beam B connecting seat 5, two ends of an arc rod of the K-shaped structural member 1 are respectively connected with an arc beam A6 and an arc beam B7, the other end of the arc beam A6 is provided with an arc beam A connecting seat 8, the other end of the arc beam B7 is provided with an arc beam B connecting seat 9, the cross beam A connecting seat 4 and the arc beam A connecting seat 8 are fixed on a left side base, and the cross beam B connecting seat 5 and the arc beam B connecting seat 9 are fixed on a right side base; the connecting piece comprises a connecting rod A, a connecting rod B and a connecting rod C, adjacent K-shaped structural members 1 are connected through the connecting rod A, adjacent cross beams A2 are connected through the connecting rod B, and connected cross beams B3 are connected through a connecting rod III; the K-shaped structural part 1 comprises a middle straight pipe 1.1, the two ends of the middle straight pipe 1.1 are respectively provided with a left end flange A1.2 and a right end flange A1.3, the middle part of the middle straight pipe 1.1 is fixed with an upper limit part 1.10, the middle straight pipe 1.1 on the two sides of the upper limit part 1.10 is slidably sleeved with a lantern ring A1.4 and a lantern ring B1.5, the lantern ring A1.4 is hinged with a connecting rod A10 through a hinged seat A1.16, the hinged seat C1.6 is hinged with a connecting rod B11 through a hinged seat B1.17, the lower part of the middle straight pipe 1.1 is provided with an arc-shaped pipe 13, the middle part of the arc-shaped pipe 13 is provided with a lower limit part 1.11 matched with the upper limit part 1.10, the two ends of the arc-shaped pipe 13 are respectively provided with a hinged seat C1.6 hinged with the connecting rod A1.8, the hinged seat D1.7 hinged with the connecting rod B1.9 is provided with a left end flange B1.12 and a right end flange A1.12, the two ends of the arc-shaped pipe 13 are respectively connected with a screw rod A14.14, and a screw bolt 14.14 is connected with a screw bolt 14, the traction sleeve is used for drawing the sleeve ring A1.4 to be close to or far away from the left end flange A1.2, the right end flange A1.3 is provided with a tie screw B1.15, the tie screw B1.15 is connected with the sleeve ring B1.5, and the traction sleeve is used for drawing the sleeve ring B1.5 to be close to or far away from the right end flange A1.3; the middle straight pipe 1.1 and the beam A2 are connected together through a tie screw A1.14 and a left end flange A1.2, and the middle straight pipe 1.1 and the beam B3 are connected together through a tie screw B1.15 and a right end flange A1.3; the drawknot screw A1.14 comprises a rod body, and 2-3 high-strength nuts are connected to the rod body in a threaded manner; the structure of the tie screw B1.15 is the same as that of the tie screw A1.14, and a plurality of tie screws are distributed along the circumference of the central line of the middle straight pipe 1.1 in an array manner; the arc-shaped pipe 13 is connected with the arc-shaped beam B7 through a right end flange B1.13 and a high-strength bolt, and the arc-shaped pipe 13 is connected with the arc-shaped beam A6 through a left end flange B1.12 and a high-strength bolt; the lower limiting member 1.11 is an annular member, the lower limiting member 1.11 is provided with a vertical gap matched with the lower limiting member 1.11, and the lower limiting member 1.11 slides up and down along the gap to limit the sliding along the length direction of the middle circular straight pipe 1.1; left side base and left side base are the steel stand, and crossbeam A2 passes through crossbeam A connecting seat 4 and high-strength bolt to be fixed at the top of left side base, and arc beam A6 passes through arc beam A connecting seat 8 and the well lower part of high-strength bolt fixation on the base of left side, well lower part on the base of left side has the brace table that supports arc beam A connecting seat 8, crossbeam A connecting seat 4 and arc beam A connecting seat 8 are the ring flange.

The construction method of the large-span arc-shaped steel structure with the middle part free of support comprises the following steps of S1: prefabricating a K-shaped structural member 1 in a factory, sleeving a lantern ring A1.4 and a lantern ring B1.5 on a middle circular straight pipe 1.1, welding a left end flange A1.2 and a right end flange A1.3 at two ends, connecting a cross beam A2, the middle circular straight pipe 1.1 and the lantern ring A1.4 by using a tie screw A1.14, connecting a cross beam B3, the middle circular straight pipe 1.1 and the lantern ring B1.5 by using a tie screw B1.15, respectively hinging an arc-shaped pipe 13 with the lantern ring A1.4 and the lantern ring B1.5 by using a connecting rod A1.8 and a connecting rod B1.9, wherein the connecting rod A1.8 and the connecting rod B1.9 are distributed in an eight-character shape, and embedding a lower limiting part 1.11 into an upper limiting part 1.10; s2: the left base and the right base are arranged at designated positions; s3: hoisting the assembly assembled in the step 1, and respectively fixedly connecting the assembly with the left base and the right base; s4: hoisting the arc beam A6 and the arc beam B7 to specified positions, connecting the arc beam A6 with the left base and the left end flange B1.12, and connecting the arc beam B7 with the right end flange B1.13 of the right base machine S5: the included angle between the connecting rod A1.8 and the connecting rod B1.9 and the horizontal plane is further adjusted by adjusting the positions of the lantern ring A1.4 and the lantern ring B1.5, so that the force for supporting the middle circular straight pipe 1.1 is adjusted.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.