阅读说明：本技术 高空大悬挑造型阳角模板架体支设方法 (Method for erecting high-altitude large-cantilever molding external corner formwork frame body ) 是由 张承芳 赵书阳 苏钢 高立敏 于 2020-12-25 设计创作，主要内容包括：高空大悬挑造型阳角模板架体支设方法,主要分为三角架、桁架、工字钢及各种固定装置组成,详细由三角架斜撑、三角架横杆、桁架底部弦杆、桁架上部弦杆、桁架竖向支撑、桁架斜撑、三角架预埋件、工字钢、工字钢固定装置、框架柱、楼面、桁架固定装置、工字钢后端锚固件组成。采用本发明的积极效果是提高安全性,保证了架体稳定性,加快工期。同时本发明方法整体受力清晰,传力明确,便于计算分析。(The method for erecting the high-altitude large-cantilever-modeling external corner formwork frame body mainly comprises a tripod, a truss, I-shaped steel and various fixing devices, and specifically comprises tripod inclined struts, tripod cross rods, truss bottom chord members, truss upper chord members, truss vertical supports, truss inclined struts, tripod embedded parts, I-shaped steel fixing devices, frame columns, floors, truss fixing devices and I-shaped steel rear-end anchoring parts. The invention has the advantages of improving the safety, ensuring the stability of the frame body and accelerating the construction period. Meanwhile, the method of the invention has clear integral stress and definite force transmission and is convenient for calculation and analysis.)

1. The high-altitude large-cantilever-modeling external corner template frame body is characterized by mainly comprising a tripod, a truss, I-shaped steel and various fixing devices, and specifically comprises tripod inclined struts, tripod cross rods, truss bottom chord members, truss upper chord members, truss vertical supports, truss inclined struts, tripod embedded parts, I-shaped steel fixing devices, frame columns, floors, truss fixing devices and I-shaped steel rear-end anchoring parts.

2. The high-altitude large-cantilever modeling external corner template frame body as claimed in claim 1, wherein the main bearing components are connected through welding to ensure the connection strength.

3. The high-altitude large-cantilever molding external corner template frame body as claimed in claim 1, which is characterized in that the tripod is reasonably stressed, and finally, upper load is transmitted to the frame column.

4. The high-altitude large-cantilever molding external corner template frame body as claimed in claim 1, which is characterized in that a tripod and a truss are combined to form a large-space structure, and a platform for erecting the large-cantilever molding template frame body is ensured.

5. The high-altitude large-cantilever molding external corner template frame body as claimed in claim 1, is characterized in that the I-steel is fixed with the floor, so that the overall stability is ensured, and meanwhile, the I-steel fixing device is adopted to be fixed with the truss, so that the disassembly and maintenance are convenient.

6. The high-altitude large-cantilever modeling external corner template frame body as claimed in claim 1, is characterized in that the whole body is clearly stressed, the force transmission is clear, and the calculation and analysis are convenient.

7. The high-altitude large-cantilever modeling external corner template frame body as claimed in claim 1, is characterized by good overall stability and reduced use of steel wire ropes.

8. A method for erecting a high-altitude large-cantilever molding external corner template frame body is characterized in that a tripod of the method comprises a tripod diagonal brace and a tripod cross bar; the tripod is a hollow thin-wall rectangular steel pipe (200 × 10), the length is fixed, the length is determined according to the width of the cantilever shape, and two parts of the tripod are connected by welding and then integrally welded to an embedded part of the frame column;

the truss is a member connected by utilizing various types of rod pieces and comprises a truss bottom chord, a truss upper chord, a truss vertical support and a truss diagonal brace, wherein the truss bottom chord and the truss upper chord are hollow thin-walled square tubes, the vertical support is a hollow thin-walled square tube, the truss diagonal brace is C-shaped steel, and all the parts are connected by welding;

the tripod embedded part consists of steel plates (500 × 20), the embedded part is welded with anchors and then embedded into concrete before the template is erected after the main frame column reinforcing steel bars are bound, and the frame column reinforcing steel bars are welded and connected with the anchors of the embedded part to prevent deviation; the elevation of the upper embedded part is 200mm lower than the elevation of the floor, and the elevation of the lower embedded part is determined according to the angle of the tripod; the elevation of the triangular support is 200mm lower than the elevation of the floor, and the elevation of the top of the chord member at the upper part of the truss is the same as the elevation of the floor;

the I-steel fixing device is fixed by matching two U-shaped bolts, two pressing plates and four nuts, the diameter of each U-shaped bolt is 20mm, the height of each U-shaped bolt is determined according to the sum of the height of a chord member at the upper part of a truss and the height of the I-steel, and the fixed pressing plates are steel plates with the thickness of 5 mm;

the I-steel rear anchoring part is composed of two U-shaped parts; after the main floor slab steel bars are bound, vertically embedding the steel bars into the steel bars, and pressing two steel bars with the diameter of 18mm and the length of 1.5m at the bottom of a U-shaped part to prevent the U-shaped part from separating from the floor slab;

one end of each I-steel is fixed on the floor, one section of the I-steel is connected to the upper chord of the truss in a pressing mode to form a simply supported structure, the type of the I-steel is determined according to the weight of the upper structure, the vertical distance of the I-steel is calculated according to the load of the upper structure, and then the I-steel distance is determined according to the vertical pole distance;

the truss fixing device is composed of two square steel pipes, is welded on a tripod cross bar, and has the interval of adding 50mm to the width of a chord on the upper part of the truss; the height is the same as the height of the upper chord of the truss.

Technical Field

The invention relates to a method for erecting a high-altitude large-cantilever molding external corner template frame body.

Background

Often meet the type structure of encorbelmenting in the construction, the template is propped up the construction and is needed to set up the scaffold, and the pole setting of scaffold needs the platform to place.

The existing method for supporting the external corner template of the cantilever frame structure is to cantilever large I-shaped steel, the cantilever length is 1.25 times of the cantilever length according to the length of a cantilever member, the cantilever length is very long, a large amount of I-shaped steel is needed, the type is very large, and the I-shaped steel type is larger when the cantilever is larger.

The drawback of the existing measurement mode is that:

1. the erection is carried out by using the overhanging I-beam method, which wastes I-beams, has larger deformation and can not meet the technical requirements.

2. The overhanging I-shaped steel needs steel wire ropes to be pulled and knotted, so that materials are wasted, and the I-shaped steel is difficult to tighten.

3. The types of the i-steel are large, the lease is difficult, and the lease fees are high.

4. The I-shaped steel is cantilevered at the external corner part, and the force is directly transmitted to the floor, so that cracks are caused to the floor.

Disclosure of Invention

The invention aims to provide a high-altitude large-cantilever molding external corner template frame body to overcome the defects of the conventional cantilever formwork.

The invention mainly relates to a method for erecting a high-altitude large-cantilever-shaped external corner formwork frame body, which mainly comprises a tripod, a truss, I-shaped steel and various fixing devices, and particularly comprises a tripod diagonal brace, a tripod cross bar, a truss bottom chord, a truss upper chord, a truss vertical support, a truss diagonal brace, a tripod embedded part, I-shaped steel, an I-shaped steel fixing device, a frame column, a floor, a truss fixing device and an I-shaped steel rear-end anchor part.

The invention has the advantages of improving the safety, ensuring the stability of the frame body and accelerating the construction period. Meanwhile, the method of the invention has clear integral stress and definite force transmission and is convenient for calculation and analysis.

The invention is further described with reference to the following figures and implementations.

FIG. 1 is a schematic three-dimensional structure of the present invention;

FIG. 2 is a front elevation view of the present invention;

1-tripod diagonal bracing 2-tripod cross bar

3-truss bottom chord member 4-truss upper chord member

5-truss vertical support 6-truss diagonal support

7-tripod embedded part 8-I-steel

9-I-steel fixing device 10-frame column

11-floor 12-truss fixing device

13-rear end anchoring part of I-shaped steel.

Detailed Description

As shown in the figure, the invention mainly comprises a tripod, a truss, I-shaped steel and various fixing devices, and particularly comprises a tripod diagonal brace, a tripod cross bar, a truss bottom chord member, a truss upper chord member, a truss vertical support, a truss diagonal brace, a tripod embedded part, I-shaped steel, an I-shaped steel fixing device, a frame column, a floor, a truss fixing device and an I-shaped steel rear-end anchor part.

The tripod of the method comprises a tripod diagonal brace and a tripod cross bar; the tripod is a hollow thin-wall rectangular steel pipe (200 × 10), the length is fixed, the length is determined according to the width of the cantilever shape, and two parts of the tripod are connected by welding and then integrally welded to an embedded part of the frame column;

the truss is a member connected by utilizing various types of rod pieces and comprises a truss bottom chord, a truss upper chord, a truss vertical support and a truss diagonal brace, wherein the truss bottom chord and the truss upper chord are hollow thin-walled square tubes, the vertical support is a hollow thin-walled square tube, the truss diagonal brace is C-shaped steel, and all the parts are connected by welding;

the tripod embedded part consists of steel plates (500 × 20), the embedded part is welded with anchors and then embedded into concrete before the template is erected after the main frame column reinforcing steel bars are bound, and the frame column reinforcing steel bars are welded and connected with the anchors of the embedded part to prevent deviation; the elevation of the upper embedded part is 200mm lower than the elevation of the floor, and the elevation of the lower embedded part is determined according to the angle of the tripod; the elevation of the triangular support is 200mm lower than the elevation of the floor, and the elevation of the top of the chord member at the upper part of the truss is the same as the elevation of the floor;

the I-steel fixing device is fixed by matching two U-shaped bolts, two pressing plates and four nuts, the diameter of each U-shaped bolt is 20mm, the height of each U-shaped bolt is determined according to the sum of the height of a chord member at the upper part of a truss and the height of the I-steel, and the fixed pressing plates are steel plates with the thickness of 5 mm;

the I-steel rear anchoring part is composed of two U-shaped parts; after the main floor slab steel bars are bound, vertically embedding the steel bars into the steel bars, and pressing two steel bars with the diameter of 18mm and the length of 1.5m at the bottom of a U-shaped part to prevent the U-shaped part from separating from the floor slab;

one end of each I-steel is fixed on the floor, one section of the I-steel is connected to the upper chord of the truss in a pressing mode to form a simply supported structure, the type of the I-steel is determined according to the weight of the upper structure, the vertical distance of the I-steel is calculated according to the load of the upper structure, and then the I-steel distance is determined according to the vertical pole distance;

the truss fixing device is composed of two square steel pipes, is welded on a tripod cross bar, and has the interval of adding 50mm to the width of a chord on the upper part of the truss; the height is the same as the height of the upper chord of the truss.

All the main bearing members are connected by welding, so that the connection strength is ensured.

The tripod is stressed reasonably, and finally the upper load is transmitted to the frame column.

The triangular support and the truss are combined to form a large space structure, and a platform erected by the template frame body in a large cantilever shape is guaranteed.

The I-steel is fixed with the floor, so that the overall stability is ensured, and meanwhile, the I-steel fixing device is fixed with the truss, so that the I-steel is convenient to disassemble and maintain.

The whole stress is clear, the force transmission is clear, and the calculation and analysis are convenient.

The integral stability is good, and the use of the steel wire rope is reduced.