CN216340448U - Brace beam string beam - Google Patents

Abstract

The present application relates to the technical field of building construction, and discloses a strut tension beam. It includes the upper chord steel beam, the lower chord cable and the strut assembly, one end of the strut assembly is hinged with the upper chord steel beam, and the other end of the strut assembly is connected with the lower chord cable through the splint assembly; The strut unit includes four inclined rods forming a rhombus structure and a middle telescopic structure located on the transverse diagonal of the rhombus structure, and the inclined rods can be rotated. Compared with the traditional tensioned beam structure, the present disclosure does not need to build a tensioning operation platform and a sliding track during the construction process, saves the time and cost of platform construction and dismantling, speeds up the construction progress, facilitates prestressing and grading, and is easy to use in the cables. After the tension is completed, the tension of the cable can be adjusted to prevent the relaxation of the prestress. The construction process is less difficult and the cost is low, which improves the construction efficiency and shortens the construction period.

Description

strut string beam

technical field

The present application relates to the technical field of building construction, for example, to a strut tension beam.

Background technique

The tensioned beam structure is a large-span prestressed self-balancing structural system developed in recent years. Generally, it consists of three parts: the upper chord rigid compression steel beam or steel truss, the lower flexible prestressed cable and several struts between the two parts. The basic stress characteristic is that the struts generate upward thrust by pulling the high-strength cables of the lower chord, so that the rigid beam of the upper chord generates an internal force opposite to the external load, reducing the deformation of the overall structure and improving the bearing capacity of the structure. . The structure of the beam is simple, the force is clear, the structure is diverse, and the advantages of rigid and flexible materials are fully utilized, and it is increasingly used in large-span stadium projects.

During the construction and installation of the string beam structure, the lower string cable is usually tensioned by a large tension jack, which requires high equipment and is difficult to control the tensioning accuracy.

Utility model content

In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended to be an extensive review, nor to identify key/critical elements or to delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

The embodiments of the present disclosure provide a strut string beam, so as to reduce the difficulty of tensioning the cables during the construction process of the string beam, and the relaxation of the cable force after tensioning, etc., and provide a strut string beam structure for tensioning the cables, and the construction process is simple and fast. , which can prevent the cable force from loosening.

In some embodiments, the strut tension beam includes an upper chord steel beam, a lower chord cable and a strut assembly, one end of the strut assembly is hinged with the upper chord steel beam, and the other end of the strut assembly is connected with the lower chord cable through a splint assembly; The assembly includes a rhombus-shaped strut unit, and the rhombus-shaped strut unit includes four oblique bars that form a rhombus structure and a middle telescopic structure located on the transverse diagonal of the rhombus structure, and the oblique bars are rotatable.

In some embodiments, the central telescopic structure includes connecting pipes at both ends and a screw rod threadedly connected to the connecting pipes, and the connecting pipes are provided with hinge points connected to the inclined rods near the ends of the inclined rods.

In some embodiments, two ends of the screw rod have opposite thread directions, and the screw rod is used to adjust the length of the middle telescopic structure.

In some embodiments, the middle telescopic structure includes a turnbuckle bolt, the turnbuckle bolt includes a connecting ring in the middle and connecting rods at both ends, the connecting rod is threadedly connected with the connecting ring, and the end of the connecting rod close to the inclined rod is provided with a connection with the inclined rod hinge point.

In some embodiments, one end of the plurality of diamond-shaped struts is hinged to the upper chord steel beam, and the other end is connected to the lower chord cable through a splint assembly.

In some embodiments, the strut assembly includes a multi-rhombus strut, the multi-rhombus strut includes a plurality of diamond-shaped strut units connected along the height direction of the strut, one end of the multi-rhombus strut is hinged with the upper chord steel beam, and the other end passes through the upper chord steel beam. The splint assembly is connected to the lower chord cable.

In some embodiments, a plurality of diamond-shaped struts are connected by intermediate splint nodes.

The strut tension beam provided by the embodiment of the present disclosure can achieve the following technical effects:

Compared with the traditional tensioned beam structure, the present disclosure does not need to build a tensioning operation platform and a sliding track in the construction process, saves the time and cost of platform construction and dismantling, speeds up the construction progress, facilitates the application of prestress and grading, and also saves time and cost on the cable. After the tension is completed, the tension of the cable can be adjusted to prevent the relaxation of the prestress. The construction process is less difficult and the cost is low, which improves the construction efficiency and shortens the construction period.

The foregoing general description and the following description are exemplary and explanatory only and are not intended to limit the application.

Description of drawings

One or more embodiments are exemplified by the accompanying drawings, which are not intended to limit the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, The drawings do not constitute a limitation of scale, and in which:

Fig. 1 is the structural representation of the utility model embodiment 1 strut tension beam;

Fig. 2 is the schematic diagram of the diamond-shaped strut monomer of Embodiment 1 of the present utility model;

3 is a schematic diagram of the middle telescopic structure of Embodiment 1 of the present utility model;

4 is a schematic diagram of the connecting structure of the inclined rod of the present invention;

Fig. 5 is the structural schematic diagram of the strut string beam of Embodiment 2 of the present utility model;

6 is a schematic diagram of a multi-diamond strut in Embodiment 2 of the present utility model;

7 is a schematic diagram of the turnbuckle bolt in Embodiment 3 of the present utility model;

FIG. 8 shows the change of cable stress in different tensioning sequences of the present invention.

Reference number:

1. Upper chord steel beam, 2. Lower chord cable, 3. Single diamond-shaped strut, 31. Diagonal rod, 311, Diagonal rod ear plate, 32. Central telescopic structure, 321, Connecting pipe, 322, Screw rod, 323, connecting rod, 324, connecting ring, 33, hinge node, 331, node body, 332, node lug plate, 333, pin shaft, 4, splint assembly, 5, hinge node at the upper end of diamond strut, 6, first identification position, 7. The second identification position, 8. Multi-diamond struts.

Detailed ways

In order to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are for reference only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, numerous details are provided to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

The terms "first", "second" and the like in the description and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for the purposes of implementing the embodiments of the disclosure described herein. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion.

In the embodiments of the present disclosure, the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. are based on the orientations shown in the drawings or Positional relationship. These terms are primarily used to better describe the embodiments of the present disclosure and embodiments thereof, and are not intended to limit the fact that the indicated device, element, or component must have a particular orientation, or be constructed and operated in a particular orientation. In addition, some of the above-mentioned terms may be used to express other meanings besides orientation or positional relationship. For example, the term "on" may also be used to express a certain attachment or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific situations.

In addition, the terms "arranged", "connected" and "fixed" should be construed broadly. For example, "connection" may be a fixed connection, a detachable connection, or a unitary construction; it may be a mechanical connection, or an electrical connection; it may be a direct connection, or an indirect connection through an intermediary, or two devices, elements or Internal connectivity between components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific situations.

Unless stated otherwise, the term "plurality" means two or more.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an "or" relationship. For example, A/B means: A or B.

The term "and/or" is an associative relationship describing objects, indicating that three relationships can exist. For example, A and/or B, means: A or B, or, A and B three relationships.

It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments may be combined with each other in the case of no conflict.

1-8, an embodiment of the present disclosure provides a strut tension beam, including an upper chord steel beam 1, a lower chord cable 2 and a strut assembly, one end of the strut assembly is hinged with the upper chord steel beam 1, and the The other end is connected with the lower chord cable 2 through the splint assembly 4; the strut assembly includes a diamond-shaped strut unit 3, and the diamond-shaped strut unit 3 includes four diagonal bars 31 that form a diamond-shaped structure and are located on the transverse diagonal of the diamond-shaped structure. The middle telescopic structure 32 is rotatable between the inclined rods 31.

By adopting the strut tension beam provided by the embodiment of the present disclosure, it is not necessary to build a tension operation platform and a sliding track during the construction process, which saves the time and cost of platform construction and dismantling, speeds up the construction progress, and facilitates prestressing and grading. After the tension of the cable is completed, the tension of the cable can also be adjusted to prevent the relaxation of the prestress. The construction process is less difficult and the cost is low, which improves the construction efficiency and shortens the construction period.

Example 1

As shown in Figure 1, Figure 2, Figure 3, Figure 4, a single diamond-shaped strut string beam is provided, wherein the middle telescopic structure 32 includes connecting pipes 321 at both ends, and a screw rod 322 threadedly connected to the connecting pipe 321, A hinge point 33 connected to the inclined rod 31 is provided at the end of the connecting pipe 321 close to the inclined rod 31 . Specifically, the connecting pipe 321 is a T-shaped hollow steel pipe at one end, the T-shaped structure is provided with a hinge point 33 connected to the diamond-shaped oblique rod 31, the other end is provided with an internal thread, and the two ends of the screw rod 322 are provided with positive and negative wires, The length of the cross bar can be adjusted by rotating the screw 322, the cross bar is contracted, the diamond-shaped strut is extended, and a pre-tension force is applied to the cable.

Example 2

As shown in Figure 5 and Figure 6, it is a multi-diamond strut tension beam. Compared with Example 1, the main difference is that the strut of the multi-diamond strut 8-string structure is composed of a plurality of rhombus struts along the height direction of the strut. One end of the multi-diamond strut 8 is hinged with the upper chord steel beam 1 , and the other end is fixedly connected with the lower chord cable 2 through the splint assembly 4 . The position where the diamond-shaped struts 3 are connected to each other is hinged through the intermediate splint joint. The length of the multi-diamond strut 8 can be adjusted by adjusting the lengths of the plurality of cross bars. Compared with the single-diamond-shaped strut string beam, the multi-diamond string beam has a wider adjustment range and wider application range.

Example 3

The middle telescopic structure 32 in Embodiment 1 and Embodiment 2 may be a turnbuckle bolt as shown in FIG. 7 . The turnbuckle bolt includes a connecting ring 324 in the middle and connecting rods 323 at both ends. The connecting rod 323 is threadedly connected to the connecting ring 324 .

Specifically, the turnbuckle bolt can be formed by connecting two round steel sections at both ends through a connecting ring 324 in the middle. One end of the round steel is T-shaped with a hinge point 33 connected to the diamond-shaped oblique rod 31, and the other end has a External thread, the length of the crossbar can be adjusted by rotating the connecting ring 324 in the middle.

The following takes Embodiment 1 as an example to describe the construction and installation method of the strut string beam, including:

Step 1, erect a temporary support frame on site, and install the upper chord steel beam 1 on the temporary support frame;

Step 3, assemble the middle telescopic structure of the diamond-shaped strut, screw the screw rod 322 into the inner thread of the connecting rod 323, screw it into the first identification position 6 of the screw rod 322, and the cross rod is in an extended state;

Step 4, assemble the diamond-shaped strut unit 3, connect the four diagonal bars 31 of the diamond-shaped strut unit 3 and the horizontal cross bar through the hinge point 33, and the diamond-shaped strut unit 3 is in a retracted state;

Step 5, install the diamond-shaped strut unit 3 at the corresponding position on the upper chord steel beam 1 (the upper hinge node 533 of the diamond-shaped strut);

Step 6, mark the position connected to the strut on the lower chord cable 2, and install the lower chord cable 2 at the lower end of the diamond-shaped strut unit 3; the two ends of the lower chord cable 2 are respectively connected with the upper chord steel beam 1 cable node ;

Step 7: Lengthen the diamond-shaped struts sequentially from one end to the other. Rotate the lead screw 322 to the second marking position 7, contract the cross bar, extend the diamond-shaped strut, and apply a pre-tension force to the cable.

Step 8, review the length of the diamond-shaped strut, and fine-tune the lead screw 322 of the middle telescopic structure, and adjust the length of the diamond-shaped strut to meet the design requirements;

Step 9, extend other diamond-shaped struts in turn;

Step 10: Review the pre-tension of the cable, and adjust the length of the cross bar of the diamond-shaped strut in the middle of the spanning beam to make the pre-tension of the cable meet the design requirements.

In addition, when using this kind of strut to stretch the chord beam, the stress of the cable is controlled by adjusting the length of the telescopic structure in the middle of the diamond strut, so that the stress of the cable does not exceed the tensile strength of the cable during the construction process. The cable stress is the tension control stress.

The tensioning methods of the cable tensioning beam structure can be divided into the following types: stretching the struts symmetrically from both ends to the middle; stretching the struts symmetrically from the middle to both ends; stretching the struts in sequence from one end to the other. Among them, the cable stress generated by the elongation sequence of the symmetrically elongated strut from the middle to the two ends is relatively high, but the limit value of the cable stress generated by the symmetrically elongated strut from both ends to the middle is the largest. Sequential cable stress changes can ultimately achieve the goal of controlling tensile stress.

Compared with the traditional tensioned beam structure, the present disclosure does not need to build a tensioning operation platform and a sliding track in the construction process, saves the time and cost of platform construction and dismantling, speeds up the construction progress, facilitates the application of prestress and grading, and also saves time and cost on the cable. After the tension is completed, the tension of the cable can be adjusted to prevent the relaxation of the prestress. The construction process is less difficult and the cost is low, which improves the construction efficiency and shortens the construction period.

The foregoing description and drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples represent only possible variations. Unless expressly required, individual components and functions are optional and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. Embodiments of the present disclosure are not limited to the structures that have been described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (7)

1. The stay bar beam string is characterized by comprising an upper chord steel beam (1), a lower chord stay rope (2) and a stay bar component, wherein one end of the stay bar component is hinged with the upper chord steel beam (1), and the other end of the stay bar component is connected with the lower chord stay rope (2) through a clamping plate component (4);

the support rod assembly comprises a rhombic support rod single body (3), the rhombic support rod single body (3) comprises four inclined rods (31) forming a rhombic structure and a middle telescopic structure (32) located on a transverse diagonal of the rhombic structure, and the inclined rods (31) can rotate.

2. The beam string of brace member according to claim 1,

middle part extending structure (32) including be located connecting pipe (321) at both ends and with connecting pipe (321) threaded connection's lead screw (322), the tip that connecting pipe (321) are close to down tube (31) is provided with hinge point (33) be connected with down tube (31).

3. The beam string of brace member according to claim 2,

the thread directions of two ends of the screw rod (322) are opposite, and the screw rod (322) is used for adjusting the length of the middle telescopic structure (32).

4. The beam string of brace member according to claim 1,

the middle telescopic structure (32) comprises a turn buckle, the turn buckle comprises a connecting ring (324) positioned in the middle and connecting rods (323) positioned at two ends, the connecting rods (323) are in threaded connection with the connecting ring (324), and hinged points (33) connected with the inclined rods (31) are arranged at the end parts, close to the inclined rods (31), of the connecting rods (323).

5. The beam string stay according to any one of claims 1 to 4,

a plurality of one end of the rhombic stay bar single body (3) is hinged with the upper chord steel beam (1), and the other end of the rhombic stay bar single body is connected with the lower chord inhaul cable (2) through the clamping plate component (4).

6. The beam string stay according to any one of claims 1 to 4,

the vaulting pole subassembly includes many rhombus vaulting poles (8), many rhombus vaulting poles (8) include a plurality of that connect along vaulting pole direction of height rhombus vaulting pole monomer (3), the one end of many rhombus vaulting poles (8) with last string girder steel (1) is articulated, and the other end passes through splint subassembly (4) and is connected with last string cable (2).

7. The beam string of brace member according to claim 6,

the rhombic stay bar single bodies (3) are hinged through middle splint nodes.

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