WO2021052142A1

WO2021052142A1 - Cable-supported large-span structure and construction method therefor

Info

Publication number: WO2021052142A1
Application number: PCT/CN2020/112183
Authority: WO
Inventors: 陈振明; 吴曦; 戴立先; 张耀林; 江磊
Original assignee: 中建科工集团有限公司
Priority date: 2019-09-19
Filing date: 2020-08-28
Publication date: 2021-03-25
Also published as: CN110761410A; AU2020348407A1; AU2023210601A1

Abstract

Disclosed are a cable-supported large-span structure and a construction method therefor. The cable-supported large-span structure comprises a primary bearing structure (1) and a secondary bearing structure (2), wherein the primary bearing structure (1) comprises vertical force-bearing members (11) and a horizontal force-bearing member (12) fixed at the top ends of the vertical force-bearing members (11); the horizontal force-bearing member (12) is erected on at least two vertical force-bearing members (11); the secondary bearing structure (2) comprises at least one cable-supported assembly (21); each stage of cable-supported assembly (21) comprises a stay cable (211), and a mast (212) vertically arranged on the horizontal force-bearing member (12); and one end of each of the stay cables (211) is fixed to a fixing member (3) or the horizontal force-bearing member (12), and the other end thereof is fixed to the horizontal force-bearing member (12) by means of the top of the mast (212). The secondary bearing structure (2) is arranged on the primary bearing structure (1), and the horizontal force-bearing member (12) is pulled up using the stay cables (211), such that the stability of the horizontal force-bearing member (12) is ensured. A structural system and a building effect can be integrated, such that a cable structure and other structures can be combined in an innovative way in order to exert their respective advantages, and a one-stage cable-supported assembly or a multi-stage cable-supported structure can be arranged according to the building form and the structure bearing condition.

Description

Cable auxiliary large-span structure and its construction method

Technical field

The invention relates to the technical field of space structure buildings, in particular to a cable-assisted large-span structure and a construction method thereof.

Background technique

In my country's steel structure specifications, the space structure system with a span of more than 60 meters is called a large-span structure building. At present, the commonly used forms of large-span space structure systems include grid structure, reticulated shell structure, suspension cable structure, membrane structure and thin shell structure, etc. . Various spatial structures have been widely used in buildings such as stadiums, convention and exhibition centers, high-speed railway station buildings, and airport terminals.

The cable-stayed structure of the existing building generally consists of a column, a roof plane structure, a cable system and an anchoring foundation. There are mainly single-cable plane or double-cable plane structures. The column and the roof plane structure, and the column and the anchoring foundation adopt single or multiple cables. Root cable structure, which is connected by a single-stage cable system. As the span of the structure increases, the number and length of cables increase. When the cable structure is used for the roof of a building, the cable structure should be a suspension cable structure, a cable-stayed structure, a string structure or a cable dome. However, as the span of a building with a large space increases, the material grade requirements for a single type of structure are getting higher and higher, and the cross-section requirements are getting larger and larger, which is uneconomical and difficult to build.

The Chinese patent application with publication number CN109629693A discloses a large-span self-anchored orthogonal suspension cable structure, which includes a main load-bearing structure and a secondary load-bearing structure, and the main load-bearing structure includes a plurality of suspension cables arranged at intervals in parallel The secondary load-bearing structure includes a plurality of cable trusses arranged at intervals in parallel, and the plurality of cable trusses are vertically arranged on the suspension cable frame along the extension direction of the suspension cable frame. However, the use of this structure can only meet some large-span buildings, but cannot meet the needs of special-shaped buildings or structures.

Summary of the invention

The purpose of the present invention is to provide a cable-assisted large-span structure and a construction method thereof, so as to solve the technical problem that the large-span structure in the prior art cannot meet the needs of special-shaped buildings or structures.

In order to achieve the above-mentioned objective, the technical solution adopted by the present invention is to provide a cable-assisted large-span structure, including: a main load-bearing structure and a secondary load-bearing structure, the main load-bearing structure includes a vertical force-bearing member and is fixed to the vertical The horizontal force-receiving member at the top end of the force-receiving member, the horizontal force-receiving member is erected on at least two of the vertical force-receiving members; the secondary load-bearing structure includes at least one cable-assisted component, and each level of the cable-assisted component Each includes a cable and a mast vertically arranged on the horizontal force-bearing member. One end of the cable is fixed to the fixing member or the horizontal force-bearing member, and the other end is fixed to the mast through the top end of the mast. On the horizontal force member.

Further, the cable-assisted assembly includes a primary cable-assisted, the masts of the primary cable-assisted are respectively located at four corners of the horizontal force-bearing member, one end of the cable is fixed to the fixing member, and the other end is The top end of the mast is fixed on the horizontal force-bearing member.

Further, the cable-assisted assembly further includes a secondary cable-assisted, and the mast of the secondary cable-assisted is provided at the connection between the stay cable of the primary cable-assisted and the horizontal force-receiving member;

One end of the stay cable of the secondary cable assistant is fixed to the bottom of the mast of the primary cable assistant, and the other end passes through the top of the mast of the secondary cable assistant and is fixed to the horizontal receiving device. On the force piece.

Further, the cable-assisted assembly further includes a multi-stage cable-assisted, and the mast of the multi-stage cable-assisted is provided at the connection between the stay cable of the upper-level cable-assisted and the horizontal force-receiving member;

One end of the guy cable of the multi-stage cable assistant is fixed to the bottom of the mast of the upper-stage cable assistant, and the other end passes through the top of the mast of the multi-stage cable assistant and is fixed to the horizontal force Pieces.

Further, in the two-stage cable assistant, in the two-stage cable assistant and the multi-stage cable assistant, the stay cables are symmetrically arranged with the mast.

Further, the height of the mast of the primary cable assistant is greater than the height of the mast of the secondary cable assistant; the height of the mast of the secondary cable assistant is greater than that of the multi-stage cable assistant. State the height of the mast.

Further, the distance between the masts close to the vertical force member is greater than the distance between the masts far away from the vertical force member.

Further, the masts are respectively arranged on two opposite sides in the length direction of the horizontal force-bearing member, and the secondary load-bearing structure is symmetrically disposed in the length and width directions of the horizontal force-bearing member.

Further, the vertical force-receiving member adopts a support column, which is arranged vertically or obliquely; the horizontal force-receiving member adopts a connecting beam, and the longitudinal cross-sectional shape of the connecting beam is linear or arc-shaped. .

Further, the number of the main load-bearing structure and the secondary load-bearing structure are both multiple, and the adjacent main load-bearing structures are fixedly connected, and the adjacent secondary load-bearing structures are connected by cables .

The invention also discloses a construction method of a cable-assisted large-span structure, which is used to build the above-mentioned cable-assisted large-span structure, and the construction method includes the following steps:

In the construction of the main load-bearing structure, the bottom of the vertical load-bearing member is fixed to a fixing member, and the horizontal load-bearing member is hoisted to the top of the vertical load-bearing member, and the horizontal load-bearing member Fixedly connected with the vertical force-receiving member;

Mast installation, reserve a reserved interface for fixing the mast on the horizontal force member, hoist the mast to the reserved interface, and fixedly connect the mast and the reserved interface ；

Cable installation, after unfolding the cable, fix one end of the cable to the fixing member or the horizontal force-receiving member, and use a single-point hoisting method to pass one end of the cable through The top end of the mast is fixedly connected to the other end of the cable and the horizontal force-receiving member, so that the forces on both sides of the mast are symmetrical;

In the cable tensioning construction, the cables are sequentially stretched, and at the same time, the tension of the cables at the two ends of the horizontal force-bearing member is adjusted.

Further, the horizontal force-receiving member is manufactured in sections in a factory, a temporary support is provided on one side of the vertical force-receiving member, and several horizontal force-receiving members are hoisted to the vertical force-receiving member in sequence And the temporary support, and fixedly connect a number of the horizontal stress members, and finally remove the temporary support.

The beneficial effect of the cable-assisted large-span structure and its construction method provided by the present invention is that: compared with the prior art, the cable-assisted large-span structure and the construction method of the present invention arrange the secondary load-bearing structure on the main load-bearing structure, The force-receiving member supports the horizontal force-receiving member, and the cable auxiliary component is arranged above the horizontal force-receiving member, and the horizontal force-receiving member is further pulled up by the cable to ensure the stability of the horizontal force-receiving member. One end is fixed to the fixed part, the other end is fixed to the horizontal force-bearing part, and the middle is supported and transferred by the mast, which can realize the integration of the structural system and the architectural effect, so that the cable structure and other structures can be innovatively combined to give play to their respective advantages , The structural force is reasonable, giving the building a light form, and can be set up with a first-level cable auxiliary component or a multi-level cable auxiliary structure according to the building form and structural load-bearing situation.

Description of the drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the specific embodiments or the description of the prior art. Obviously, the appendix in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic structural diagram when the cable-assisted large-span structure provided by an embodiment of the present invention is a primary cable-assisted;

2 is a schematic structural diagram when the cable-assisted large-span structure provided by an embodiment of the present invention is a secondary cable-assisted;

FIG. 3 is a schematic structural diagram when the cable-assisted large-span structure provided by the embodiment of the present invention is a three-stage cable-assisted;

4 is a schematic structural diagram when the cable-assisted large-span structure provided by the embodiment of the present invention is a four-stage cable-assisted;

FIG. 5 is a schematic diagram 1 of a three-dimensional structure of a cable-assisted large-span structure provided by an embodiment of the present invention;

6 is a schematic diagram 2 of a three-dimensional structure of a cable-assisted large-span structure provided by an embodiment of the present invention;

FIG. 7 is a three-dimensional schematic diagram three of a cable-assisted large-span structure provided by an embodiment of the present invention;

FIG. 8 is a fourth schematic diagram of a three-dimensional structure of a cable-assisted large-span structure provided by an embodiment of the present invention;

FIG. 9 is a five-dimensional schematic diagram of a three-dimensional structure of a cable-assisted large-span structure provided by an embodiment of the present invention;

Fig. 10 is a schematic structural diagram of a cable-assisted large-span structure provided by an embodiment of the present invention.

Description of reference signs:

1. Main load-bearing structure; 2. Secondary load-bearing structure; 3. Fixed parts; 11. Vertical load-bearing parts; 12. Horizontal load-bearing parts; 21. Cable auxiliary components; 211. Stay cables; 212. Masts.

detailed description

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that the terms "installation", "connected" and "connected" should be interpreted broadly unless otherwise clearly specified and limited. For example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood in specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Please refer to FIGS. 1 to 4 together, and now the cable-supplied large-span structure provided by the present invention will be described. The cable-assisted long-span structure includes a main load-bearing structure 1 and a secondary load-bearing structure 2. The main load-bearing structure 1 includes a vertical force-receiving member 11 and a horizontal force-receiving member 12 fixed to the top of the vertical force-receiving member 11 The horizontal force-receiving member 12 is erected on at least two of the vertical force-receiving members 11; the secondary load-bearing structure 2 includes at least one cable-assisted component 21, and each level of the cable-assisted component 21 includes a cable 211 and a mast 212 vertically arranged on the horizontal force member 12, one end of the cable 211 is fixed on the fixing member 3 or the horizontal force member 12, and the other end is fixed by the top end of the mast 212 On the horizontal force-receiving member 12.

Compared with the prior art, the cable-assisted large-span structure provided by the present invention is that the secondary load-bearing structure 2 is arranged on the main load-bearing structure 1, the vertical load-bearing member 11 supports the horizontal load-bearing member 12, and the cable-assisted assembly 21 is provided Above the horizontal force-receiving member 12, a cable 211 is further used to pull up the horizontal force-receiving member 12 to ensure the stability of the horizontal force-receiving member 12. One end of the cable 211 is fixed to the fixing member 3, and the other end It is fixed on the horizontal force member 12 and supported and transferred by the mast 212 in the middle, which can realize the integration of the structural system and the architectural effect, so that the cable structure and other structures can be combined in an innovative manner, giving full play to their respective advantages, and the structural force is reasonable. The shape of the building is light, and one-level cable-assisted structure or multi-level cable-assisted structure can be set according to the building form and structural load-bearing situation.

Specifically, the main load-bearing structure 1 may select one or more of frame structure, truss structure, arch structure, grid structure, reticulated shell structure, membrane structure, or thin shell structure. After the main load-bearing structure 1 and the secondary load-bearing structure 2 are combined, the spatial span of the overall structure is increased. According to the overall structural requirements, the cable-assisted component 21 of the secondary load-bearing structure 2 can be selected as a primary cable-assisted component 21 or a multi-stage cable-assisted component 21, wherein the number of stages of the multi-stage cable-assisted component 21 is not limited.

Further, please refer to FIG. 1 together, as a specific implementation of the cable-assisted large-span structure provided by the present invention, the cable-assisted assembly 21 includes a primary cable-assisted, and the mast 212 of the primary cable-assisted They are respectively located at the four corners of the horizontal force-receiving member 12, one end of the cable 211 is fixed to the fixing member 3, and the other end is fixed to the horizontal force-receiving member 12 via the top end of the mast 212. Specifically, the shape of the horizontal force receiving member 12 is a square structure. The first-level cable accessory includes four masts 212, and the four masts 212 are respectively located at the outer edge corners of the horizontal force member 12. The number of cables 211 is also four, and each cable 211 corresponds to a mast 212. One end of the cable 211 is fixed to the fixing member 3, and the other end is fixed to the horizontal force-receiving member 12. The fixing member 3 refers to a base member, which is generally a ground or a fixed member fixed on the ground. Wherein, the mast 212 may be directly arranged directly above the vertical force receiving member 11 or may be fixedly connected or welded with the vertical force receiving member 11.

Among them, the mast 212 has the same upright direction as the vertical force-receiving member 11, the bottom is just connected to the horizontal force-receiving member 12, the outer cable 211 is anchored on the foundation, and the inner cable 211 and the horizontal force-receiving member 12 are diagonally pulled. For connection, the angle between the inner and outer cables 211 and the mast 212 can be adjusted according to structural requirements.

Further, please refer to FIG. 2, as a specific embodiment of the cable-assisted long-span structure provided by the present invention, the cable-assisted assembly 21 further includes a secondary cable-assisted structure, and the mast 212 of the secondary cable-assisted At the junction of the cable 211 of the primary cable assistant and the horizontal force-receiving member 12; one end of the cable 211 of the secondary cable assistant is fixed to the The bottom of the mast 212 and the other end of the mast 212 passing through the top of the secondary cable are fixed on the horizontal force-bearing member 12. Specifically, the secondary cable assistant is arranged inside the primary cable assistant, and the secondary cable assistant also includes four masts 212 and four cables 211, wherein both ends of the cable 211 are fixedly connected to the horizontal force receiving member 12 , One end of the cable 211 is set under the mast 212 of the primary cable assistant, so that the primary cable assistant and the secondary cable assistant can cooperate to support the horizontal force-bearing member 12, and ensure that the horizontal force-bearing member 12 Even by force. The vertical direction of the mast 212 of the secondary cable assistant and the mast 212 of the primary cable assistant should be coordinated appropriately, and the bottom is just connected to the horizontal force member 12.

Further, referring to FIGS. 3 and 4, as a specific implementation of the cable-assisted large-span structure provided by the present invention, the cable-assisted assembly 21 further includes a multi-stage cable-assisted mast. 212 is set at the connection between the stay cable 211 of the upper-level cable assistant and the horizontal force-receiving member 12; one end of the stay cable 211 of the multi-stage cable assistant is fixed to the upper-level cable assistant. The bottom of the mast 212 and the other end pass through the top of the mast 212 of the multi-stage cable and are fixed on the horizontal force-bearing member 12. Specifically, multi-level cable assistance refers to three or more levels of cable assistance, and multi-level cable assistance is equivalent to one or more secondary cable assistance. The multi-stage cable assistant is set on the inner side of the second cable assistant, and the position of the next cable assistant is set on the inner side of the upper cable assistant, and each grade of cable assistant includes four masts 212 and four cables 211. Both ends of the cable 211 are fixedly connected to the horizontal force-receiving member 12, and one end of the cable 211 is set under the mast 212 of the upper-level cable-assisted, so that the upper-level cable-assisted and the lower-level cable-assisted can be The horizontal force-receiving member 12 is supported in cooperation, and the force on the horizontal force-receiving member 12 is ensured to be uniform. The vertical direction of the mast 212 of the multi-stage cable assistant and the mast 212 of the first cable assistant and the second cable assistant should be coordinated appropriately, and the bottom is just connected to the horizontal force member 12. The multi-level cable-assisted large-span structure required to construct a large space is formed by the multi-level cable-assisted combination.

Further, please refer to Figures 1 to 4, as a specific implementation of the cable-assisted large-span structure provided by the present invention, in the secondary cable-assisted, in the secondary cable-assisted and the multi-stage cable-assisted In the auxiliary, the cables 211 are symmetrically arranged with the mast 212. Specifically, the cables 211 of each level of cable support can form an isosceles triangle, that is, the length and angle of the cables 211 on both sides of the mast 212 are equal, which can ensure that the forces on both sides of the cable 211 are equal, that is, It is ensured that the force on the horizontal force receiving member 12 is uniform, and the pulling force on the cable 211 can also increase the service life of the cable 211 on average.

Further, please refer to Figures 1 to 4, as a specific implementation of the cable-assisted large-span structure provided by the present invention, the height of the mast 212 of the primary cable-assisted is greater than the height of the secondary cable-assisted. The height of the mast 212; the height of the mast 212 of the secondary cable assistant is greater than the height of the mast 212 of the multi-stage cable assistant. Specifically, the primary cable-assisted structure of the multi-level cable-assisted large-span structure contributes the most to the overall structural bearing capacity, the secondary cable-assisted structure has the second highest bearing capacity of the entire structure, and the cable-assisted structure with the lower order of the series contributes the most to the overall structure. The smaller the contribution of structural bearing capacity is, until the impact is close to zero. Therefore, the height of the mast 212 is gradually reduced to meet the requirements of the overall structural bearing capacity, and all the vertices of the masts 212 are connected to form a parabolic shape. It can solve the continuous transmission of internal force of the cables at all levels to reach the first cable, so as to achieve the force requirements of the large-span structure. At the same time, the line of the apex of the mast 212 presents a curve, which can realize the perfect combination of the building and the structure.

Further, please refer to FIGS. 1 to 4, as a specific embodiment of the cable-assisted large-span structure provided by the present invention, the distance between the masts 212 close to the vertical force receiving member 11 is greater than that far away from the The distance between the masts 212 of the vertical force receiving member 11. Specifically, the layout and design of the primary cable assistant, secondary cable assistant, and multi-stage cable assistant in the entire secondary load-bearing structure 2 should be reasonable, and the spacing of each mast 212 should be set appropriately, and the overall appearance should be sparse and dense, so as to satisfy The overall structure's demand for bearing capacity.

Further, referring to FIGS. 5 to 8, as a specific embodiment of the cable-assisted large-span structure provided by the present invention, the masts 212 are respectively arranged on two opposite sides in the length direction of the horizontal force receiving member 12, Moreover, the secondary load-bearing structure 2 is symmetrically arranged in the length and width directions of the horizontal force receiving member 12. Specifically, the projection surface of the horizontal force member 12 is generally square, and the structure of the mast 212 on the projection surface of the horizontal force member 12 is symmetrically arranged, that is, the entire secondary load-bearing structure 2 is symmetrical on the entire horizontal force member 12 Set up.

Further, please refer to Figures 1 to 8, as a specific embodiment of the cable-assisted large-span structure provided by the present invention, the vertical force receiving member 11 adopts a supporting column, and the supporting column is arranged vertically or inclined. The horizontal force-receiving member 12 adopts a connecting beam, and the longitudinal cross-sectional shape of the connecting beam is linear or arc-shaped. Specifically, support columns generally refer to fixed support columns such as steel columns or cement columns, and connecting beams refer to connecting beams made of steel beams or other metal parts. Among them, the support column can be inclined at an appropriate angle, the bottom of which is fixed to the fixing member 3, and the top of which is hinged or rigidly connected to the connecting beam. The shape of the longitudinal section of the connecting beam can be straight or curved, that is, the connecting beam can be a straight connecting beam or an arched beam. The main load-bearing structure 1 can choose a frame structure, a truss structure, an arch structure, a grid structure, a reticulated shell structure, a membrane structure, or a thin shell structure. At this time, it can be ensured that the entire cable-assisted large-span structure has a better applicable surface, and provides a set of new structural solutions for the practical problems of super-large space construction. Innovative combinations of multiple structural forms can give play to their respective advantages, save costs, and endow The light form of the building.

Further, please refer to Figure 9 and Figure 10, as a specific implementation of the cable-assisted large-span structure provided by the present invention, the number of the main load-bearing structure 1 and the number of the secondary load-bearing structure 2 are both multiple, and the same The adjacent primary load-bearing structures 1 are fixedly connected, and the adjacent secondary load-bearing structures 2 are connected by cables 211. Specifically, the entire cable-assisted large-span structure can be applied to the project in the form of a main load-bearing structure 1 and a secondary load-bearing structure 2, or the number of the main load-bearing structure 1 and the secondary load-bearing structure 2 can be set to multiple, and the main load-bearing structure The structure 1 is a whole, the horizontal load-bearing member 12 can be welded or spliced, etc., the vertical load-bearing member 11 can be arranged separately or in combination, and the secondary load-bearing structures 2 can be connected by cables 211, which are located in the horizontal load-bearing member 12. The outer side of the edge cable 211 can be fixedly connected with the upper surface of the other horizontal load-bearing member 12. At this time, the fixed connection between the secondary load-bearing structures 2 can be realized, and the combination method can be adjusted according to actual needs and specific needs. , Which can form a large-span spatial structure.

Referring to Figures 1 to 10, the present invention also provides a construction method for a cable-assisted large-span structure, which is used to build a cable-assisted large-span structure as in any one of the above. The construction method of the cable-assisted large-span structure includes the following step:

The main load-bearing structure 1 is constructed, the bottom of the vertical force receiving member 11 is fixed to a fixing member 3, and the horizontal force receiving member 12 is hoisted to the top of the vertical force receiving member 11, and the The horizontal force receiving member 12 and the vertical force receiving member 11 are fixedly connected;

The mast 212 is installed, a reserved interface for fixing the mast 212 is reserved on the horizontal force member 12, the mast 212 is hoisted to the reserved interface, and the mast 212 and the Reserved interface for fixed connection;

The cable 211 is installed. After the cable 211 is unfolded, one end of the cable 211 is fixed to the fixing member 3 or the horizontal force-receiving member 12, and the cable is lifted by a single-point hoisting method. One end of the cable 211 passes through the top end of the mast 212, and the other end of the cable 211 is fixedly connected to the horizontal force member 12, so that the force on both sides of the mast 212 is symmetrical;

The cable 211 is stretched, and the cable 211 is stretched in sequence, and at the same time, the tension of the cable 211 located at the two ends of the horizontal force receiving member 12 is adjusted.

In the construction method of the cable-assisted large-span structure provided by the present invention, the secondary load-bearing structure 2 is arranged on the main load-bearing structure 1, the vertical load-bearing member 11 supports the horizontal load-bearing member 12, and the cable-assisted assembly 21 is set in the horizontal load-bearing structure. Above the member 12, a cable 211 is further used to pull up the horizontal force receiving member 12, thereby ensuring the stability of the horizontal force receiving member 12. One end of the cable 211 is fixed to the fixing member 3, and the other end is fixed to the horizontal receiving member 3. The force member 12 is supported and transferred by the mast 212 in the middle, which can realize the integration of the structural system and the architectural effect, so that the cable structure and other structures can be combined in an innovative manner, giving full play to their respective advantages, and the structure is reasonably stressed, giving the building a light form , And can set up a first-level cable-assisted structure or a multi-level cable-assisted structure according to the building form and structural load-bearing situation.

Among them, the vertical force member 11 is a steel column, and the horizontal force member 12 is a steel beam. First, the steel column is processed and the pier is anchored with a cable, and the steel column is hoisted to the anchor pier by a hoisting machine. Realize the fixed connection of the steel column. When the mast 212 is installed, suitable hoisting equipment is used for hoisting. During hoisting, the inclination angle of the mast 212 is controlled by a chain hoist, so that the interface at the bottom of the mast 212 fits with the interface reserved on the upper surface of the horizontal force member 12. After initial positioning, temporarily fix it and then adjust and calibrate it, and perform interface node welding after completion. It is forbidden to loosen the hook of the crane rope during the welding process, and the hook can be loosened after the welding is completed and the code plate is welded in place.

Before the cable 211 is installed, the cable extension operation is required, even if the cable 211 is in a stress-free natural state during installation, the safe and smooth progress of the installation project is ensured. The horizontal cable reel can be used for cable release. Set up a braking device for the cable reel. If necessary, a wire rope can be used as the tail cable. A small tricycle is used to slowly and stably unwind the cable, so as to avoid the elasticity of the cable reel and the eccentric force generated during traction. The rotation of the disc causes acceleration, which endangers the safety of the staff. Among them, the purpose of unfolding the cable 211 in advance is the installation requirement, and the cable body can be stretched to dissipate the torsion force.

The mast 212 of the stay cable 211 is installed using the "single-point hoisting method", that is, after the cable 211 is deployed on the ground, a cable clamp is installed at about 0.5m from the anchor head of the stay cable 211 mast 212 to set a lifting point, and then the lifting device adopts an appropriate lifting device. For hoisting machinery, use high-altitude vehicles to provide installation workers with an operating platform, and cooperate with the chain hoist to adjust the free end of the front end of the cable clamp to the angle of the design cable 211, so that the end of the cable 211 can enter the mast. The lug plate on the 212 is inserted into the pin to lock it, and then the cable 211 on the other side of the mast 212 is installed to ensure that the mast 212 is symmetrically stressed.

After the installation of the top of the mast 212 is completed, a tension fixing point is set near the anchor lug plate at the beam end on the steel beam, and power measures such as a winch and a chain hoist are arranged, so as to set an angle adjustment bracket and a traction rope. During installation, the adjusting nut of the cable 211 is loosened to make the length of the cable 211 slightly longer, which facilitates the installation of the lower end of the cable 211 on the beam. Connect the hoist and the chain hoist with the anchor at the lower end of the cable 211 with a sling, and then use a small crane or bracket to lift the anchor of the cable 211 to install and fix the cable 211 on the steel beam.

Among them, during the tensioning construction of the cable 211, in order to accurately perform the tensioning and adjustment of the cable 211, the “hydraulic jack-oil pump” system is adopted during the tensioning, and the tension is controlled through the relationship of “oil pressure-force value”. The tensioning sequence of the cable 211 is gradually extended from the cable 211 on both sides of the steel beam to the cable 211 on the inner side of the steel beam, and each time two symmetrical cables 211 are stretched, the tension on both sides should be Synchronization is performed symmetrically to ensure symmetry. After the secondary cable has been tensioned, the steel beam support should be removed before subsequent tensioning construction. The tension error of the control cable force is within ±5%. After the structural roof construction is completed, the cable 211 that fails to reach the design cable force shall be adjusted again; the steel beam shall be deformed after the steel beam is unframed and the cable 211 is tensioned. Observation.

Further, as a specific implementation of the construction method of the cable-assisted large-span structure provided by the present invention, the horizontal force receiving member 12 is manufactured in sections in a factory, and is provided on one side of the vertical force receiving member 11. Temporary support: hoist several horizontal force-receiving parts 12 to said vertical force-receiving part 11 and said temporary support in turn, and fix and connect several horizontal force-receiving parts 12 to each other. The temporary support is removed. Specifically, the horizontal force-bearing member 12 is a steel beam, and the steel beam is pre-manufactured in sections in the factory, which can facilitate transportation and hoisting operations. When installing on site, first set up temporary supports at the bottom of the steel beams, then use hoisting machinery to hoist the steel beams in place, and weld multiple steel beams separately. After the construction of the secondary load-bearing structure 2 is completed, first remove the steel beams. The temporary support of the middle section of the beam is then symmetrically unloaded to the two ends of the steel beam.

Obviously, the foregoing embodiments are merely examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, other changes or modifications in different forms can be made on the basis of the above description. It is unnecessary and impossible to list all the implementation methods here. The obvious changes or changes derived from this are still within the protection scope created by the present invention.

Claims

The Suofu large-span structure is characterized by:

The main load-bearing structure (1), the main load-bearing structure (1) includes a vertical force-receiving member (11) and a horizontal force-receiving member (12) fixed to the top end of the vertical force-receiving member (11). The force-receiving member (12) is erected on at least two of the vertical force-receiving members (11); and

A secondary load-bearing structure (2), the secondary load-bearing structure (2) includes at least one cable-assisted component (21), and the cable-assisted component (21) at each level includes a cable (211) and is vertically arranged on the The mast (212) on the horizontal force-bearing member (12), one end of the cable (211) is fixed to the fixing member (3) or the horizontal force-bearing member (12), and the other end passes through the mast (212) The top end of) is fixed on the horizontal force-receiving member (12).
The cable-assisted long-span structure according to claim 1, characterized in that: the cable-assisted assembly (21) includes a primary cable-assisted, and the masts (212) of the primary cable-assisted are respectively located on the horizontal force-bearing member In the four corners of (12), one end of the cable (211) is fixed to the fixing member (3), and the other end is fixed to the horizontal force-receiving member (12) via the top end of the mast (212).
The cable-assisted long-span structure according to claim 2, characterized in that: the cable-assisted component (21) further comprises a secondary cable-assisted, and the mast (212) of the secondary cable-assisted is provided in the first The connection point of the cable (211) and the horizontal force-receiving member (12) of the grade cable assistant;

One end of the guy cable (211) of the secondary cable assistant is fixed to the bottom of the mast (212) of the primary cable assistant, and the other end passes through the mast (212) of the secondary cable assistant. The top of) is fixed on the horizontal force-receiving member (12).
The cable-assisted long-span structure according to claim 3, characterized in that: the cable-assisted assembly (21) further comprises a multi-stage cable-assisted, and the mast (212) of the multi-stage cable-assisted is arranged at the upper level The connection point of the cable (211) and the horizontal force-receiving member (12) of the cable assistant;

One end of the stay cable (211) of the multi-stage cable assistant is fixed to the bottom of the mast (212) of the upper cable assistant, and the other end passes through the mast (212) of the multi-stage cable assistant The top part is fixed on the horizontal force-receiving member (12).
The cable-assisted long-span structure according to claim 4, characterized in that: in the secondary cable-assisted, in the secondary cable-assisted and the multi-stage cable-assisted, the cable (211) is both The mast (212) is symmetrically arranged.
The cable-assisted long-span structure according to claim 4, characterized in that: the height of the mast (212) of the primary cable-assisted is greater than the height of the mast (212) of the secondary cable-assisted; The height of the mast (212) of the secondary cable assistant is greater than the height of the mast (212) of the multi-stage cable assistant.
The cable-assisted long-span structure according to any one of claims 1 to 6, characterized in that the distance between the masts (212) close to the vertical force member is greater than that far away from the vertical force member The spacing between the masts (212).
The cable-assisted large-span structure according to any one of claims 1 to 6, wherein the masts (212) are respectively arranged on two opposite sides in the length direction of the horizontal force-receiving member (12), and The secondary load-bearing structure (2) is symmetrically arranged in the length and width directions of the horizontal force-receiving member (12).
The cable-assisted large-span structure according to any one of claims 1 to 6, characterized in that: the vertical force-receiving member (11) adopts a supporting column, and the supporting column is arranged vertically or inclined; the horizontal The force-receiving member (12) adopts a connecting beam, and the longitudinal cross-sectional shape of the connecting beam is a straight line or an arc shape.
The cable-assisted large-span structure according to any one of claims 1 to 6, characterized in that: the number of the main load-bearing structure (1) and the number of the secondary load-bearing structure (2) are multiple, and adjacent The main load-bearing structures (1) are fixedly connected, and the adjacent secondary load-bearing structures (2) are connected by cables (211).
A construction method for a cable-assisted large-span structure for building the cable-assisted large-span structure according to any one of claims 1 to 10, characterized in that: the construction method includes the following steps:

The main load-bearing structure (1) is constructed, the bottom of the vertical force-bearing member (11) is fixed to a fixing member (3), and the horizontal force-bearing member (12) is hoisted to the vertical force The top of the piece (11), and fixedly connect the horizontal force-receiving piece (12) and the vertical force-receiving piece (11);

The mast (212) is installed, a reserved interface for fixing the mast (212) is reserved on the horizontal force-bearing member (12), the mast (212) is hoisted to the reserved interface, and Fixedly connect the mast (212) and the reserved interface;

The cable (211) is installed. After the cable (211) is unfolded, one end of the cable (211) is fixed to the fixing member (3) or the horizontal force-receiving member (12), A single-point hoisting method is used to pass one end of the stay cable (211) through the top end of the mast (212), and then fix the other end of the stay cable (211) to the horizontal force-bearing member (12) Connection so that the forces on both sides of the mast (212) are symmetrical;

The tensioning construction of the cable (211) is to sequentially stretch the cable (211), and simultaneously adjust the tension of the cable (211) located at the two ends of the horizontal force-receiving member (12).
The construction method of the cable-assisted long-span structure according to claim 11, characterized in that: the horizontal force-receiving member (12) is manufactured in sections in a factory, and is located on one side of the vertical force-receiving member (11). Set up temporary supports, hoist a number of the horizontal load-bearing members (12) to the vertical load-bearing member (11) and the temporary support in turn, and place a number of the horizontal load-bearing members (12) Fixed connection between the two, and finally the temporary support is removed.