CN217924416U

CN217924416U - Nondestructive combination device for I-shaped steel

Info

Publication number: CN217924416U
Application number: CN202222238511.XU
Authority: CN
Inventors: 卢文杰; 蓝芝任; 李兴; 刘彬; 徐志鹏; 陆琦
Original assignee: Zhongtian Construction Group Co Ltd
Current assignee: Zhongtian Construction Group Co Ltd
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2022-11-29
Anticipated expiration: 2032-08-24

Abstract

The utility model provides a harmless composite set of I-steel belongs to construction technical field, and composite set includes I-steel, T type fastener and cell type connecting plate, and two I-steels overlap the setting mutually, and a plurality of cell type connecting plate interval card is established on the both sides of two I-steels, and T type fastener card is established between two I-steels to fix the side at the cell type connecting plate. The utility model discloses a radius of gyration of composite set cross-section is improved by a wide margin, and the bearing capacity of the single component of support bearing capacity than two the same areas of combination cross-section also correspondingly improves by a wide margin, and the technique through the built-up connection can become the component that originally unsatisfied the support condition and support the bearing capacity good component.

Description

Nondestructive combination device for I-shaped steel

Technical Field

The utility model relates to a construction technical field especially relates to a harmless composite set of I-steel.

Background

The conventional method for combining I-shaped steel in civil construction comprises the following steps: the Y-axis direction turning radius of the I-steel 16a is small, the I-steel is conventionally used as a member mainly subjected to bending such as a beam, in order to meet the bearing capacity requirement of a back-jacking support, two I-steels need to be spliced and combined into a member with a large cross section, the turning radius in the Y-axis direction is greatly improved, the bearing capacity of the combined member is greatly improved, and the conventional splicing and combining technology is electric welding.

The prior art has the following disadvantages: (1) The I-steel welding combination welding has large workload, low welding efficiency and more working hours. (2) The I-steel welding belongs to special operation, and needs special operation workers to operate, so that the labor cost is high. (3) The I-shaped steel cannot be disassembled for use after being welded and combined, if the I-shaped steel needs to be disassembled, oxygen flame cutting is needed, the flange loss of the I-shaped steel is large, the I-shaped steel is difficult to reuse, and the method is not economical and environment-friendly.

In civil building civil construction sites in China, basement roofs need to be divided into a plurality of areas in a post-pouring belt mode in order to reduce the problem of shrinkage cracks of concrete, the post-pouring belt of the concrete is adopted to release stress generated by shrinkage of the concrete, so that the shrinkage stress of concrete slabs in the roofs is smaller than the tensile strength of the concrete, and the concrete is prevented from generating visible cracks. The telescopic post-cast strip can be closed generally 60 days after concrete pouring, and in the period, the top plate of the basement, through which the post-cast strip passes, has to be supported and backed up for reinforcement because of no bearing capacity. The method has a set of method for reinforcing the back top of the post-cast strip by each construction unit, but the method is different from the method. The reinforced material is generally a plurality of conventional fastener type steel pipe frames, steel pipe section steel and I-shaped steel welding combined members and the like.

The fastener type steel pipe frame is adopted as a post-cast strip support, the diameter of a steel pipe is only 48mm, the vertical rods, the horizontal cross rods and the cross braces must be connected through fasteners to form a stable and reliable stress support system, the vertical rods are arranged at close intervals, the distance is about 1000mm generally, and the space of a basement influences the transportation of construction materials, the passing of operating personnel, the installation of equipment pipelines and the like due to the isolation of the post-cast strip support frame body.

The steel pipe section steel is used as a post-cast strip support, the bearing capacity of the steel pipe section steel is high, the distance between the vertical rods can be set sparsely, the problem of construction inconvenience caused by a fastener type steel pipe frame can be solved, but the steel pipe section steel is a material which is not commonly used in the field and generally needs to be purchased from the market again; except the application of the post-cast strip back-supporting, steel pipe section steel is less used in other places, and after the post-cast strip is closed, the steel pipe section steel can only be stacked on site because of no other application, and the benefit is not high because of low material utilization rate.

The bearing capacity performance of the I-shaped steel welding combined member is the same as that of steel tube sections, a construction unit generally stores a large amount of I-shaped steel, the I-shaped steel is used as a back-jacking support, the existing I-shaped steel material can be effectively utilized, but the I-shaped steel cannot be disassembled for use after being welded and combined, if the I-shaped steel needs to be disassembled, oxygen flame cutting is adopted, the loss of the flange of the I-shaped steel is large, the flange of the I-shaped steel is difficult to recycle, and the I-shaped steel is uneconomical and environmentally-friendly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a harmless composite set of I-steel solves the reinforced (rfd) material cost height of current building, technical problem of unable recycle.

Two I-shaped steels are connected into a rod piece with a combined section through a simple fastener and a steel plate, the turning radius of the combined section in the weak axis direction is greatly improved, and the integral stable bearing capacity is improved. Because the flanges of the two I-shaped structures are not welded, in order to ensure that the combined section is stressed in a synergistic manner during supporting, the local structure must meet the requirement on stability.

In order to realize the purpose, the utility model adopts the technical scheme as follows:

a non-destructive I-steel combination device comprises I-steels, T-shaped fasteners and groove-shaped connecting plates, wherein the two I-steels are overlapped, the groove-shaped connecting plates are clamped on two sides of the two I-steels at intervals, and the T-shaped fasteners are clamped between the two I-steels and fixed on the side edges of the groove-shaped connecting plates.

Further, T type fastener includes T type fastener web and T type fastener edge of a wing, and T type fastener web sets up to "L" type structure, and the one end and the T type fastener edge of a wing of T type fastener web are connected, and the inner wall at two I-steel junctions is established to T type fastener edge of a wing card, and the side outside at the cell type connecting plate is established to T type fastener web card.

Further, be provided with T type fastener web round hole on the T type fastener web, set up the iron and decide and pass T type fastener web round hole fixed T type fastener.

Furthermore, the groove-shaped connecting plates are arranged into a groove-shaped steel structure, and the groove-shaped connecting plates are arranged on the two I-shaped steels at equal intervals and are clamped.

Furthermore, the wood wedge is arranged in a gap at the joint of the two I-shaped steels, and the upper end and the lower end of the wood wedge are tightly attached to the joint of the two I-shaped steels.

The utility model discloses owing to adopted above-mentioned technical scheme, following beneficial effect has:

the utility model discloses a radius of gyration of composite set cross-section improves greatly, the requirement that the slenderness ratio of supporting member is not more than 150 has been satisfied, the bearing capacity of the support bearing capacity of combination cross-section than the single component of two the same areas improves greatly, the stable bearing capacity of supporting member obtains improvement by a wide margin, can become the component that supports the bearing capacity good with the component that originally unsatisfied the support condition through built-up connection's technique, adopt and exempt from welded construction method, need not special operation workman's special qualification requirement, the I-steel composite erection is quick convenient, connect reliably, the facilitate promotion, it is convenient to dismantle, need not oxygen flame cutting, dismantle the equal not damaged to the I-steel, can reuse, cost effectively reduces.

Drawings

FIG. 1 is a side view of the I-steel connecting and combining device of the present invention;

FIG. 2 isbase:Sub>A schematic view of the A-A structure of FIG. 1;

FIG. 3 is a schematic view of the structure B-B of FIG. 2;

FIG. 4 is a schematic view of the T-shaped fastener of the present invention;

fig. 5 is a cross-sectional view of the double-I-steel combination of the present invention.

In the attached drawings, 1-I-shaped steel; 2-T type fasteners; 2-1-T type fastener web; 2-2-T type fastener flange; 2-3-T type fastener web circular hole; 3-a trough-shaped connecting plate; 4-wooden wedge.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and by referring to preferred embodiments. However, it should be noted that the numerous details set forth in the description are merely intended to provide a thorough understanding of one or more aspects of the invention, even though such aspects of the invention may be practiced without these specific details.

As shown in figure 1, the I-steel nondestructive combination device comprises I-steels 1, T-shaped fasteners 2 and groove-shaped connecting plates 3, wherein the two I-steels 1 are arranged in an overlapped mode, the plurality of groove-shaped connecting plates 3 are arranged on two sides of the two I-steels 1 in a clamped mode at intervals, and the T-shaped fasteners 2 are arranged between the two I-steels 1 in a clamped mode and fixed to the side edges of the groove-shaped connecting plates 3. The I-steel 1 is I-steel 16a, and a steel ruler and a red pencil which are used for measuring, positioning and dividing intervals of the groove-shaped connecting plate are needed during specific construction, an iron hammer used for novel connecting fastener construction and a skid used for assisting I-steel combined connection construction are needed.

The width of the groove-shaped connecting plate 3 is 100mm, the clear distance is 500mm, and the calculation principle is explained by taking a combined cross-section component of a tool 16a with the length of 3.5m as an example:

the single root tool 16a: the material Q235B has a gyration radius Iy =1.89cm, an inertia moment Iy =93cm4, and an area A =26.1cm2

Aspect ratio

Does not satisfy the stability factor of the b-type section

Bearing capacity

The double-H-shaped steel combined section 2 is provided with 16a, as shown in figure 5: mass Q235B moment of inertia Iy =93cm4 area A =2X26.1=52.2cm2

Radius of gyration

Aspect ratio

Satisfies the stability factor of b-type section

Bearing capacity

After the I-steel of the I16 a is combined, the turning radius of the cross section is improved by 2.53 times, the requirement that the slenderness ratio of a supporting member is not more than 150 is met, the supporting bearing capacity of the combined cross section is improved by 3.42 times compared with the bearing capacity of two single members with the same area, the stable bearing capacity of the supporting member is greatly improved, and the original members which do not meet the supporting condition can be changed into the members with excellent supporting bearing capacity through the combined connection technology.

In the embodiment of the present invention, as shown in fig. 4, the T-shaped fastener 2 includes a T-shaped fastener web 2-1 and a T-shaped fastener flange 2-2, the T-shaped fastener web 2-1 is set to be an "L" shaped structure, one end of the T-shaped fastener web 2-1 is connected to the T-shaped fastener flange 2-2, the T-shaped fastener flange 2-2 is fastened to the inner wall of the joint of the two i-beams 1, and the T-shaped fastener web 2-1 is fastened to the outer side of the slot-shaped connecting plate 3.

The device furthest utilizes the existing I-steel material in scene to use as the supporting member, need not purchase again, improves the utilization ratio of current material. The influence on the transportation of construction materials, the passing of operators, the installation of equipment pipelines and the like is avoided. The efficiency of the I-steel connection built-up connection construction is improved, and the artificial timeliness is improved. The I-steel can be disassembled in a nondestructive mode after being combined and connected, the I-steel can be recycled, energy is saved, the environment is protected, and cost and efficiency are reduced in construction management.

In the embodiment of the utility model, T-shaped fastener web circular hole 2-3 is arranged on T-shaped fastener web 2-1, and iron is arranged to pass through T-shaped fastener web circular hole 2-3 to fix T-shaped fastener 2.T type fastener web round hole 2-3 sets up on one side of connecting handle for use iron decide to realize the effect of buckle after inserting.

The embodiment of the utility model provides an in, cell type connecting plate 3 sets up to the cell type steel construction, and a plurality of cell type connecting plate 3 equidistant settings are on two I-steel 1 to the chucking sets up.

In the embodiment of the utility model, above-mentioned scheme still includes wood wedge 4, and wood wedge 4 sets up in the clearance of 1 junction of two I-steel, and the upper and lower both ends of wood wedge 4 are hugged closely at 1 junction of two I-steel.

The construction process of the I-shaped steel nondestructive combination is as follows:

the method comprises the following steps: and horizontally placing the skids on the ground every 1m, and then placing the first I-steel on the skids, wherein the long edge of the I-steel is parallel to the ground.

Step two: a steel ruler and a red pencil are used for making positioning marks of the groove-shaped connecting plate on two flanges of the I-steel every 600mm, the width of the groove-shaped connecting plate is 100mm, the clear distance is 500mm, and the marks are retested after the positioning marks on the flanges of the I-steel are finished.

Step three: t-shaped fasteners are respectively placed on two sides of the groove-shaped connecting plate to be placed, web plates of the T-shaped fasteners are perpendicular to flanges of the I-shaped steel, and iron nails for temporary fixing are threaded through round holes of the web plates of the T-shaped fasteners.

Step four: and after all the T-shaped fasteners are placed and fixed temporarily, placing a second I-steel, wherein the second I-steel is placed in parallel with the first I-steel.

Step five: and (4) placing a groove-shaped connecting plate at the originally marked position, and buckling the outer side flanges of the two I-shaped steels.

Step six: and (3) inserting a wooden wedge between the gaps at the butt joint positions of the flanges of the two I-shaped steels so as to clamp the wooden wedge, and then beating the wedge by using an iron hammer from one end of the I-shaped steel to the other end of the I-shaped steel so as to ensure that the groove-shaped connecting plate can not be loosened completely.

Step seven: and clamping the web plate gap of the T-shaped fastener into the groove-shaped connecting plate, and then forcibly knocking the T-shaped fastener by using an iron hammer, wherein the T-shaped fastener is not loosened.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a harmless composite set of I-steel which characterized in that: the novel T-shaped connecting plate is characterized by comprising I-shaped steels (1), T-shaped fasteners (2) and groove-shaped connecting plates (3), wherein the two I-shaped steels (1) are overlapped, the groove-shaped connecting plates (3) are clamped on two sides of the two I-shaped steels (1) at intervals, and the T-shaped fasteners (2) are clamped between the two I-shaped steels (1) and fixed on the side edges of the groove-shaped connecting plates (3).

2. The i-steel nondestructive assembly device of claim 1, wherein: the T-shaped fastener (2) comprises a T-shaped fastener web (2-1) and a T-shaped fastener flange (2-2), the T-shaped fastener web (2-1) is arranged to be of an L-shaped structure, one end of the T-shaped fastener web (2-1) is connected with the T-shaped fastener flange (2-2), the T-shaped fastener flange (2-2) is clamped on the inner wall of the joint of the two I-shaped steels (1), and the T-shaped fastener web (2-1) is clamped on the outer side of the side edge of the groove-shaped connecting plate (3).

3. The i-steel nondestructive assembly device of claim 2, wherein: a T-shaped fastener web circular hole (2-3) is formed in the T-shaped fastener web (2-1), and a metal iron is arranged to penetrate through the T-shaped fastener web circular hole (2-3) to fix the T-shaped fastener (2).

4. The I-steel nondestructive assembly device of claim 1, characterized in that: the groove-shaped connecting plates (3) are arranged into a groove-shaped steel structure, and the groove-shaped connecting plates (3) are arranged on the two I-shaped steels (1) at equal intervals and are clamped.

5. The i-steel nondestructive assembly device of claim 1, wherein: the wooden wedge (4) is arranged in a gap at the joint of the two I-shaped steels (1), and the upper end and the lower end of the wooden wedge (4) are tightly attached to the joint of the two I-shaped steels (1).