CN213087046U

CN213087046U - Lattice column shoulder beam connecting joint

Info

Publication number: CN213087046U
Application number: CN202021637388.3U
Authority: CN
Inventors: 李宏亮; 许强
Original assignee: Hangxiao Steel Structure Hebei Construction Co ltd
Current assignee: Hangxiao Steel Structure Hebei Construction Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-04-30
Anticipated expiration: 2030-08-07

Abstract

The invention provides a lattice column shoulder beam connecting joint. The lattice column shoulder beam connecting joint comprises an upper column, a shoulder beam, a crane limb and a roof truss limb. The shoulder beam comprises a connecting bracket, a shoulder beam unit and a shoulder beam section. The upper side of the shoulder beam section is fixedly connected with the upper column, and the lower side of the shoulder beam section is fixedly connected with the roof truss limb. The shoulder beam section, the upper column and the roof truss limb are combined into a first assembling unit. The connecting bracket is fixedly connected with the crane limb. The top of the crane limb extends out of the connecting bracket. An upper connecting plate is arranged at the included angle between the connecting bracket and the upper side of the crane limb. A lower connecting plate is arranged at the included angle between the connecting bracket and the lower side of the crane limb. The crane limb and the connecting bracket are combined into a second assembling unit. One end of the shoulder beam unit is connected with the connecting bracket through a high-strength bolt, and the other end of the shoulder beam unit is connected with the shoulder beam section through a high-strength bolt. According to the lattice column shoulder beam connecting joint, the high-strength bolts are matched with oblique beams for pulling and tying to meet the design requirements for rigidity and strength, the multiple assembling units are small in size, remote transportation is achieved, a large amount of welding operation is replaced with on-site bolt installation, and the efficiency of factories and sites is greatly improved.

Description

Lattice column shoulder beam connecting joint

Technical Field

The utility model belongs to the technical field of the steel construction building, concretely relates to lattice column shoulder roof beam connected node.

Background

In large-span industrial plants, stepped columns of varying cross-section along the height are generally used due to the process requirements. The upper column of the step-shaped column is generally in a solid web type H-shaped section due to small stress. The lower column of the stepped column needs to bear the load of a crane besides the load of the upper column, and generally adopts a lattice column. The column shoulder beam serves as a middle node connecting the upper column and the lower column, transmits the internal force of the upper column to the lower column on one hand, and serves as a support of the crane beam on the other hand. In order to ensure that the stepped columns work integrally up and down, the shoulder beams must have sufficient rigidity and strength, and therefore the shoulder beam positions are often all welded together.

For overseas projects, in order to reduce the transportation difficulty and cost, the offshore projects are generally processed and manufactured at home and then transported to project sites by containers. Generally, the transverse span of a heavy industrial factory building exceeds 30 meters, the cornice height exceeds 25 meters, and the tonnage of a crane is more than 30 tons, so that the section height of the lattice column reaches more than 2.5 m. For such projects, the stepped columns need to be machined in sections, transported to the site and assembled as a whole. The segmentation of the stepped pillar suffers from two problems: firstly, because the length of the stepped column is very long, the total length of the rod is generally controlled within 12 meters when the rod is transported in a container mode, and the length is over-long. Secondly, the section height of the lattice column of the lower column is 2.5 m-3.5 m, the width and the height of the container are generally limited to about 2.2m, the transverse dimension is also over-limit, and the container cannot be transported after being integrally manufactured.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a convenient shoulder beam connecting node manufacturing method which is convenient for factory manufacturing, container transportation and site operation on the premise of ensuring the connection safety.

In order to achieve the above purpose, the utility model provides a technical scheme is:

a lattice column shoulder beam connecting node comprises an upper column, a shoulder beam, a crane limb and a roof truss limb; the shoulder beam comprises three parts of a connecting bracket, a shoulder beam unit and a shoulder beam section, the upper side of the shoulder beam section is fixedly connected with an upper column, the lower side of the shoulder beam section is fixedly connected with a roof truss limb, and the shoulder beam section, the upper column and the roof truss limb are combined into a first assembly unit; the connecting bracket is fixedly connected with the crane limbs, the top of each crane limb extends out of the connecting bracket, an upper connecting plate is arranged at an upper side included angle between the connecting bracket and each crane limb, a lower connecting plate is arranged at a lower side included angle between the connecting bracket and each crane limb, and each crane limb and each connecting bracket are combined into a second assembly unit; one end of the shoulder beam unit is connected with the connecting bracket through a high-strength bolt, and the other end of the shoulder beam unit is connected with the shoulder beam section through a high-strength bolt.

The utility model provides a lattice column shoulder roof beam connected node replaces traditional welding seam connection with high-strength bolted connection, can decompose the lattice column and transport respectively for a plurality of assembly units to can reach design requirement rigidity and intensity, simple structure, preparation are efficient, and simplify the connection way of shoulder roof beam position, replaced a large amount of welding seam connections in former shoulder roof beam position, very big promotion mill and on-the-spot efficiency.

An oblique web member is arranged between the upper connecting plate and the upper column, an oblique web member is arranged between the lower connecting plate and the roof truss limb, and two ends of the oblique web member are of bolt fixedly connected structures.

Specifically, the lengths of the connecting bracket, the shoulder beam unit and the shoulder beam section are respectively one third of the designed length of the shoulder beam.

Drawings

Fig. 1 (a): a traditional lattice column shoulder beam connecting node structure diagram;

fig. 1 (b): B-B cross-sectional structure diagram of traditional lattice column shoulder beam;

fig. 2 (a): the utility model is a schematic diagram of a latticed column structure;

3 FIG. 3 2 3 ( 3 b 3) 3 is 3 a 3 cross 3- 3 sectional 3 structural 3 view 3 of 3 the 3 shoulder 3 beam 3 A 3- 3 A 3 of 3 the 3 present 3 invention 3; 3

FIG. 3 shows a first assembly cell configuration;

FIG. 4 is a second assembly cell configuration;

FIG. 5 is a shoulder beam unit structure;

figure 6 is a structure diagram of the shoulder beam joint of the utility model.

In the figure: the roof truss comprises a roof truss limb 1, a shoulder beam 2, an upper column 3, a crane limb 4, an inclined web member 5, a connecting plate 6, a shoulder beam section 21, a shoulder beam unit 22, a connecting bracket 23, an upper connecting plate 23-1 and a lower connecting plate 23-2.

Detailed Description

The following describes the technical solution of the present invention in detail and completely with reference to the accompanying drawings.

A lattice column shoulder beam connection node commonly used in the conventional art is shown in fig. 1(a) and 1 (b). A shoulder beam 2 is arranged between a crane limb 4 and a roof truss limb 1 of the lattice column, and the shoulder beam 2 generally comprises a web plate, an upper cover plate, a lower cover plate, a base plate and the like. The upper column 3 of the connecting roof truss is welded and fixed with the shoulder beam 2. The shoulder beam 2 should have a certain height in addition to the calculated and determined section so as to ensure the embedding and constraint of the upper column 3. For a large lattice column component, the shoulder beam 2 is large in size and many in plates, so that the welding range is large, and the manufacturing difficulty is relatively high.

The design concept of the utility model is that: the factory integral welding prefabrication of the large-size shoulder beam of the latticed column is abandoned, and the large-size shoulder beam is decomposed into relatively independent assembling units with small volume. And all the assembling units are transported to an engineering site, the assembling of all the assembling units and all the rod pieces is carried out on the site, the equal-strength connection of the connecting points is realized through high-strength bolts, and the axial force, the shearing force and the bending moment can be simultaneously transmitted, so that the integral rigidity of the connecting joint position of the lattice column shoulder beam is close to that of the traditional shoulder beam joint.

Based on the above concept, referring to fig. 2(a), fig. 2(b), fig. 3 to 6 show, the utility model provides a lattice column shoulder beam connected node, shoulder beam 2 structure divide into three parts of connecting bracket 23, shoulder beam unit 22 and shoulder beam section 21 in this design. The shoulder beam section 21 is used for the engagement of the upper column 3 with the roof truss limb 1. The connecting bracket 23 is fixedly connected with the crane limb 4, an upper connecting plate 23-1 is arranged at an upper side included angle between the connecting bracket 23 and the crane limb 4, and a lower connecting plate 23-2 is arranged at a lower side included angle between the connecting bracket 23 and the crane limb 4. Specifically, the method comprises the following steps: the shoulder beam section 21, the upper column 3 and the roof truss limb 1 are combined as a first assembly unit. The connecting corbels 23 are combined with the crane limbs 4 as a second assembly unit. The shoulder beam unit 22 is an independent assembly unit, one end of the shoulder beam unit 22 is horizontally butted with the connecting bracket 23 through a high-strength bolt, and the other end of the shoulder beam unit 22 is horizontally butted with the shoulder beam section 21 through a high-strength bolt.

The lengths of the connecting bracket 23, the shoulder beam unit 22 and the shoulder beam section 21 are respectively one third of the designed length of the shoulder beam.

The surface of the upper column 3 is provided with a connecting plate 6 which is corresponding to the upper connecting plate and is used for fixedly connecting the oblique web members, and the oblique web members 5 are arranged between the upper connecting plate 23-1 and the upper column 3. The roof truss limbs 1 are provided with connecting plates 6 which correspond to the lower connecting plates and are used for fixedly connecting the oblique web members, and the oblique web members 5 are arranged between the lower connecting plates 23-2 and the roof truss limbs 1. The two ends of the diagonal web member 5 are fixedly connected with the corresponding connecting plates by high-strength bolts. The oblique web member 5 is used for transmitting axial force, so that a stable shoulder beam structure is assembled by the column crane limbs, the roof truss limbs and the shoulder beam, all parts are stressed clearly and are divided reasonably.

The step-shaped column assembled by a plurality of assembling units provided by the utility model has the node strength basically equal to the original integrally welded structure, and meets the structural design requirement; a plurality of assembling units of the device are more convenient to manufacture and low in assembling difficulty; each decomposed assembly unit has small volume, and the requirements of remote transportation and field installation are met; for the site operation, the bolt installation is easier and the safety is higher compared with the site welding operation, so the scheme can effectively improve the site operation efficiency and the construction quality.

Claims

1. The utility model provides a lattice column shoulder beam connected node, includes upper prop, shoulder beam, crane limb and roof truss limb, characterized by: the shoulder beam comprises three parts of a connecting bracket, a shoulder beam unit and a shoulder beam section, the upper side of the shoulder beam section is fixedly connected with an upper column, the lower side of the shoulder beam section is fixedly connected with a roof truss limb, and the shoulder beam section, the upper column and the roof truss limb are combined into a first assembly unit; the connecting bracket is fixedly connected with the crane limbs, the top of each crane limb extends above the connecting bracket, an upper connecting plate is arranged at an upper side included angle between the connecting bracket and the crane limbs, a lower connecting plate is arranged at a lower side included angle between the legs and the crane limbs, and the upper connecting plate and the lower connecting plate are combined into a second assembly unit; one end of the shoulder beam unit is connected with the bracket through a high-strength bolt, and the other end of the shoulder beam unit is connected with the shoulder beam section through a high-strength bolt; oblique web members are respectively arranged between the upper connecting plate and the upper column and between the lower connecting plate and the roof truss limbs, and two ends of each oblique web member are of bolt fixedly connected structures.

2. The lattice column shoulder beam connection node of claim 1, wherein: the lengths of the connecting bracket, the shoulder beam unit and the shoulder beam section are respectively one third of the designed length of the shoulder beam.