A load-bearing beam, a roof load-bearing structure and an installation method

Abstract

A load-bearing beam, a roof load-bearing structure and an installation method belong to the technical field of buildings. The beam body includes multiple beam segments; the splicing members are metal members, which are arranged at the ends of adjacent beam segments and are fixedly connected to the adjacent two beam segments respectively; the support is provided with a second accommodating cavity for accommodating the beam body, the end of the beam body is embedded in the second accommodating cavity and is fixedly connected to the beam body; the hidden cable segments are respectively connected to adjacent splicing members, and / or the hidden cable segments are respectively connected to adjacent supports and splicing members; and the hidden cable segments are embedded in the beam segments. When the load-bearing beam of the present invention is used as the upper chord beam in the beam string structure, since the beam segments are fixedly connected by splicing members, and supports with second accommodating cavities and hidden cables are provided to ensure that each beam segment is firmly and reliably fixed together, the connection strength between the upper chord beam segments is improved, and the problems of beam segment loosening and connection point dislocation are avoided, thereby improving the load-bearing capacity of the beam string structure.

Description

Technical Field

[0001] The present invention relates to the technical field of buildings, and particularly relates to a load-bearing beam, a roof load-bearing structure and an installation method thereof. Background Art

[0002] A load-bearing structure refers to the main structural members and their connection joints that directly transmit its own dead weight and various external applied forces to the foundation ground, including load-bearing walls, vertical poles, frame columns, piers, floor slabs, beams, roof trusses, suspension cables, etc.

[0003] Among them, the beam string structure is a hybrid structure system formed by a rigid upper chord beam, a flexible cable, and a strut connected in the middle. Its structural composition is a new type of self-balanced system and also a long-span prestressed space structure system.

[0004] Since the beam string structure is a long-span space structure system, the length of the upper chord beam is relatively long. To facilitate the production and transportation of the upper chord beam, the current upper chord beams are all set as multiple beam segments for separate production and transportation, and then the multiple beam segments are spliced to form the upper chord beam for use. However, since the upper chord beam is spliced by multiple beam segments, the connection points of adjacent beam segments are prone to dislocation during load-bearing, which may lead to the damage of the upper chord beam. Therefore, due to the insufficient connection strength between the existing beam segments of the upper chord beam, the load-bearing capacity of the existing beam string structure formed by splicing multiple beam segments is relatively low. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the relatively low load-bearing capacity of the beam string structure formed by splicing multiple beam segments in the prior art, so as to provide a load-bearing beam, a roof load-bearing structure and an installation method thereof.

[0006] The present invention provides the following technical solutions:

[0007] A load-bearing beam, comprising:

[0008] A beam body, the beam body comprising multiple beam segments;

[0009] A splicing member, the splicing member being a metal member, arranged at the ends of adjacent beam segments and fixedly connected to the adjacent two beam segments respectively;

[0010] A support, on which there is a second accommodation cavity for accommodating the beam body, the end of the beam body being embedded in the second accommodation cavity and fixedly connected to the beam body;

[0011] A hidden cable segment, the hidden cable segment being connected to adjacent splicing members respectively, and / or the hidden cable segment being connected to adjacent supports and splicing members respectively; and the hidden cable segment is embedded in the beam segment.

[0012] Optionally, a first accommodation cavity is provided at the end of the beam body, and the bearing is embedded in the first accommodation cavity.

[0013] Optionally, the bearing is of a plate-like structure; the bearing and the beam body are connected through the rebar embedment arranged in the vertical direction of the bearing.

[0014] Optionally, a accommodation groove is provided on the side of the beam segment away from the roof and arranged along the length direction of the beam segment;

[0015] The hidden cable segment is embedded in the accommodation groove.

[0016] A roof load-bearing structure includes:

[0017] The above-mentioned load-bearing beam; and,

[0018] A cable, connecting the bearings at both ends of the beam body;

[0019] A strut, one end of which is fixedly connected to the beam body and the other end is connected to the cable to provide prestress to the beam body.

[0020] Optionally, the end of the strut is embedded in the beam body and is connected to the beam body through the rebar embedment.

[0021] Optionally, the beam body is made of wood and the beam body has an inverted arch structure arched away from the roof.

[0022] An installation method of the above-mentioned load-bearing beam includes the following steps:

[0023] S1, embedding the hidden cable segments corresponding to each beam segment in the beam segment; and embedding the end of the beam body in the second accommodation cavity and fixedly connecting it to the beam body;

[0024] S2, fixedly connecting two adjacent beam segments in the beam body through the splicing member;

[0025] S3, fixedly connecting the adjacent splicing members through the hidden cable segments; fixedly connecting the adjacent bearings and the splicing members through the hidden cable segments; a plurality of the hidden cable segments form a hidden cable penetrating the longitudinal direction of the beam body.

[0026] Optionally, step S2 specifically includes the following steps:

[0027] S2-1, fixedly connecting the splicing member to any one of two adjacent beam segments;

[0028] S2-2, hoisting the beam segment into the air by a hoisting device and placing it on a support;

[0029] S2-3. Fix the splicing member to the other one of the two adjacent beam segments.

[0030] An installation method for the above roof load-bearing structure includes the following steps:

[0031] S1. Install the hidden cable segments corresponding to each beam segment into the beam segment; and install the end of the beam body into the second accommodation cavity and fix it to the beam body.

[0032] S2. Fix the two adjacent beam segments in the beam body to each other through the splicing member.

[0033] S3. Fix the adjacent splicing members to each other through the hidden cable segments; fix the adjacent supports and the splicing members to each other through the hidden cable segments; the multiple hidden cable segments form a hidden cable running through the beam body in its length direction.

[0034] S4. Fix the strut to the beam body; and connect the cable to the strut movably.

[0035] S5. Connect the cable to the supports at both ends of the beam body and apply a tension force to the cable to tension the cable.

[0036] Optionally, step S5 specifically includes the following steps:

[0037] S5-1. Connect the cable to the supports at both ends of the beam body.

[0038] S5-2. Lift the beam body into the air by a hoisting device and place it at a position suitable for installing the beam body.

[0039] S5-3. Apply a tension force to the cable to tension the cable.

[0040] Optionally, step S2 specifically includes the following steps:

[0041] S2-1. Fix the splicing member to any one of the two adjacent beam segments.

[0042] S2-2. Lift the beam segment into the air by a hoisting device and place it on a support.

[0043] S2-3. Fix the splicing member to the other one of the two adjacent beam segments.

[0044] The technical solution of the present invention has the following advantages:

[0045] 1. The load-bearing beam provided by the present invention includes a beam body, and the beam body includes a plurality of beam segments; splicing members, which are metal members, are arranged at the ends of adjacent beam segments and are fixedly connected to the adjacent two beam segments respectively; a support, on which there is a second accommodation cavity for accommodating the beam body, the end of the beam body is embedded in the second accommodation cavity and is fixedly connected to the beam body; hidden cable segments, the hidden cable segments are respectively connected to adjacent splicing members, and / or the hidden cable segments are respectively connected to adjacent supports and splicing members; and the hidden cable segments are embedded in the beam segments.

[0046] In the present invention, adjacent beam segments are fixedly connected by arranging splicing members made of metal. Since the rigid strength of the metal material is relatively strong, there will be no situation where the connection points of the beam segments are deformed and misaligned due to the large load-bearing of the beam body, so as to ensure the load-bearing capacity of the beam body.

[0047] In the present invention, a support is arranged at the end of the beam body, and the support is provided with a second accommodation cavity for accommodating the beam segment. The end of the beam segment is embedded in the second accommodation cavity. The second accommodation cavity plays a limiting role on the end of the beam body, so that the two ends of the beam body are subjected to supporting forces in opposite directions, so that the beam segments and the connecting members are subjected to pressures along the length direction of the beam body, avoiding loosening of the multiple beam segments constituting the beam body along the length direction of the beam body, and further causing deformation and misalignment of the connection points of the beam segments, reducing the load-bearing capacity of the beam body.

[0048] In the present invention, by arranging hidden cable segments, adjacent splicing members, or adjacent supports and splicing members are effectively connected together, so that the splicing members and the supports are connected into a whole. The tension of the hidden cable segments ensures that each beam segment is firmly and reliably fixed together, avoiding loosening of each beam segment and the splicing members along the length direction of the beam body, thereby reducing the load-bearing capacity of the beam body. At the same time, the tension of the hidden cable segments also provides prestress for each beam segment of the beam body to support the beam body and improve the torsion resistance and tensile resistance of the beam body, thereby enhancing the load-bearing capacity of the beam body.

[0049] Therefore, when the load-bearing beam of the present invention is used as the upper chord beam in a beam string structure, since the beam segments are fixedly connected by splicing members, and supports with second accommodation cavities and hidden cables are arranged to ensure that each beam segment is firmly and reliably fixed together, the connection strength between the upper chord beam segments is improved, avoiding the problems of beam segment loosening and connection point misalignment, thereby enhancing the load-bearing capacity of the beam string structure.

[0050] 2. For the load-bearing beam provided by the present invention, a first accommodation cavity is provided at the end of the beam body, and the support is embedded in the first accommodation cavity.

[0051] The present invention provides a first accommodation cavity at both ends of the beam body, and the support for connecting the hidden cable section is embedded in the first accommodation cavity, so that the beam body and the support form an integral structure. Therefore, the tensile force of the hidden cable section is borne by the entire beam body at the first accommodation cavity, rather than the force point being biased towards one side. Thus, the present invention is more balanced in force, avoiding the problems that the beam body bulges and bends towards the other side after being stressed due to the force point being biased towards one side, and the components at the connection are subjected to torsional moments, resulting in damage to the beam body and detachment.

[0052] 3. For the load-bearing beam provided by the present invention, the support is in a plate-like structure; the support and the beam body are connected through the rebar embedment arranged along the vertical direction of the support.

[0053] The present invention arranges the rebar embedment along the vertical direction of the support to penetrate and connect the support and the beam body, so that the tensile force received by the support is transmitted to the beam body through the rebar embedment. Since the rebar embedment penetrates the beam body, the tensile force received by the support will be evenly transmitted to the entire beam body, rather than being transmitted to one side, avoiding the force point of the beam body being biased towards one side, which may cause the beam body to bulge and bend towards the other side after being stressed, and further resulting in the reduction or even damage of the load-bearing capacity of the beam body.

[0054] 4. For the load-bearing beam provided by the present invention, a accommodation groove is provided on the side of the beam section away from the roof along the length direction of the beam section; the hidden cable section is embedded in the accommodation groove.

[0055] The present invention provides an accommodation groove on the side of the beam section away from the roof and embeds the hidden cable in the accommodation groove. The accommodation groove plays a role in restricting the hidden cable, avoiding the hidden cable moving on the beam section due to the restoring force generated by itself after being subjected to tensile force, resulting in the hidden cable detaching from the beam section and being unable to continue to provide prestress to the beam body, leading to a reduction in the load-bearing capacity of the beam body and further causing damage during loading; in addition, the hidden cable is embedded in the accommodation groove, making the hidden cable not exposed, avoiding the hidden cable occupying the space inside the building and improving the neatness and aesthetics of the building.

[0056] 5. The roof load-bearing structure provided by the present invention includes the above-mentioned load-bearing beam; and a cable, connecting the supports at both ends of the beam body; a strut, one end of which is fixedly connected to the beam body and the other end is connected to the cable to provide prestress to the beam body.

[0057] The present invention arranges a cable to connect the supports at both ends of the beam body and provides a strut on the cable to provide prestress to the beam body, thereby improving the load-bearing capacity of the load-bearing beam. Since the load-bearing beam is simultaneously subjected to the prestress of the hidden cable section and the cable strut, the load-bearing capacity of the present invention is stronger.

[0058] 6. For the roof load-bearing structure provided by the present invention, the end of the strut is embedded in the beam body and is connected to the beam body through the rebar embedment.

[0059] The end of the strut of the present invention is embedded in the beam body, so that the strut is connected to the beam body and plays a positioning role, avoiding the offset between the strut and the beam body after being stressed, which may lead to insufficient prestress. The post-embedded bar penetrates and connects the end of the strut and the beam body, further stabilizing the connection between the strut and the beam body, and at the same time evenly transmitting the prestress provided by the strut to the beam body, avoiding the offset and bending of the beam body due to uneven stress.

[0060] 7. The roof load-bearing structure provided by the present invention, wherein the beam body is made of wood, and the beam body has an inverted arch structure arched away from the roof.

[0061] The structure of the present invention can be used in wooden buildings, that is, the beam body is made of wood, so that large-span wooden buildings can avoid setting more support columns by using the structure of the present invention, increasing the usable space inside the building, thereby improving the cleanliness of the wooden building and making the building more environmentally friendly.

[0062] Due to the stronger load-bearing capacity of the present invention, that is, the beam body has stronger pressure-bearing capacity, the beam body of the present invention can be set as an inverted arch structure arched away from the roof, so that the roof sinks into the building interior. Compared with the positive arch structure of the wooden beam string structure in the prior art, which is arched towards the roof, the present invention reduces the building height, and at the same time provides a new roof structure through the above inverted arch structure, increasing the selection range for building engineers and users.

[0063] 8. The installation method of the above-mentioned load-bearing beam provided by the present invention includes the following steps: S1, embedding the hidden cable segments corresponding to each beam segment in the beam segment; and embedding the end of the beam body in the second accommodation cavity and fixedly connecting it to the beam body; S2, fixedly connecting two adjacent beam segments in the beam body through the splicing member; S3, fixedly connecting the adjacent splicing members through the hidden cable segments; fixedly connecting the adjacent supports and the splicing members through the hidden cable segments; and a plurality of the hidden cable segments form a hidden cable penetrating the beam body in its longitudinal direction.

[0064] First, the present invention installs the hidden cable segments in the corresponding beam segments, connects the beam body to the support, then fixedly connects the beam segments through splicing members, and finally connects the hidden cable segments. Since the hidden cable segments in the load-bearing beam after installation need to provide tensile force to two adjacent splicing members or adjacent supports and splicing members, that is, the hidden cable segments in the load-bearing beam after installation are in a tensile state with a restoring force, therefore, first install the hidden cable segments and supports at the designated positions, then connect the beam segments through splicing members, and finally stretch the hidden cable segments so that their ends are connected to the splicing members or supports, avoiding the problem that the splicing members and supports cannot be installed on the beam body after the hidden cable segments are first connected to the splicing members or supports. In addition, the hidden cable segments forming a hidden cable running through the beam body in its longitudinal direction can effectively fix all the beam segments together, improve the tensile and anti-bending abilities of the load-bearing beam, and ensure that the load-bearing beam has sufficient toughness and strength.

[0065] 9. The installation method of the above-mentioned load-bearing beam provided by the present invention, step S2 specifically includes the following steps: S2-1, fixedly connect the splicing member to any one of the two adjacent beam segments; S2-2, lift the beam segment into the air by a hoisting device and place it on a support; S2-3, fixedly connect the splicing member to the other of the two adjacent beam segments.

[0066] The present invention first lifts the beam segment into the air by a hoisting device and places it on a support, then connects the beam segments through splicing members, and finally performs the connection operation of the hidden cable. Compared with the method of connecting the beam segments and the hidden cable on the ground and then hoisting the whole, since the structural length of the beam body is larger after the connection operation, this method has higher requirements for the hoisting device. And during the hoisting process, due to the long length of the beam body, it is difficult to control the movement and rotation of the beam body. Therefore, the present invention adopts the method of hoisting the beam segment into the air and then performing the connection operation, which can effectively reduce the blockage and rotation resistance suffered by the beam body during the rotation process, thereby reducing the installation difficulty and the requirements for the hoisting device during the installation process.

[0067] 10. The installation method of the above-mentioned roof load-bearing structure provided by the present invention includes the following steps: S1, install the hidden cable segments corresponding to each beam segment in the beam segment; and install the end of the beam body in the second accommodating cavity and fixedly connect it to the beam body; S2, fixedly connect two adjacent beam segments in the beam body through the splicing member; S3, fixedly connect the adjacent splicing members through the hidden cable segments; fixedly connect the adjacent supports and the splicing members through the hidden cable segments; multiple hidden cable segments form a hidden cable running through the beam body in its length direction; S4, fixedly connect the strut to the beam body; and movably connect the cable to the strut; S5, connect the cable to the supports at both ends of the beam body and provide a tension force to the cable to tension the cable.

[0068] In the present invention, the hidden cable segments are first installed in the corresponding beam segments, and the beam body is connected to the supports. Then, the beam segments are fixedly connected through splicing members. Finally, the hidden cable segments are connected. Since the hidden cable segments in the load-bearing beam after installation need to provide tensile force to adjacent two splicing members or adjacent supports and splicing members, that is, the hidden cable segments in the load-bearing beam after installation are in a tensile state with a restoring force, therefore, the hidden cable segments and the supports are first installed in the designated positions, and then the beam segments are connected through the splicing members. Finally, the hidden cable segments are stretched so that their ends are connected to the splicing members or the supports, avoiding the problem that the splicing members and the supports cannot be installed on the beam body after the hidden cable segments are first connected to the splicing members or the supports.

[0069] In addition, connecting the strut, the beam body and the cable first and then tensioning the cable can avoid the problem that the strut cannot be installed due to the space distance limitation between the cable and the beam body after the cable is first tensioned to be taut.

[0070] 11. The installation method of the above-mentioned roof load-bearing structure provided by the present invention, step S5 specifically includes the following steps: S5-1, connecting the cable to the supports at both ends of the beam body; S5-2, lifting the beam body into the air by a hoisting device and placing it at a position suitable for installing the beam body; S5-3, providing a tensioning force to the cable to tension the cable.

[0071] In the present invention, the strut, the beam body and the cable are first connected, and then the whole of the above components is hoisted, and finally tensioning is carried out in the air. Compared with the method of assembling and tensioning on the ground, since the whole is on the ground during tensioning and the self-gravity of the beam body is not applied to the cable, it is necessary to calculate the tensioning force during tensioning and consider the effect of gravity in the calculation process, resulting in a more complex calculation process. And since the gravity factor in the calculation process is not the actual value of the self-gravity of the beam body but a calculated estimate, the tensioning force obtained by the calculation will have an error. The present invention adopts the method of hoisting first and then tensioning. Since the tensioning operation is carried out in the air and the self-gravity of the beam body has been applied to the cable, there is no need to calculate the gravity factor for the tensioning force.

[0072] 12. The installation method of the above-mentioned roof load-bearing structure provided by the present invention, step S2 specifically includes the following steps: S2-1, fixedly connecting the splicing member to any one of the adjacent two beam segments; S2-2, lifting the beam segment into the air by a hoisting device and placing it on the support; S2-3, fixedly connecting the splicing member to the other of the adjacent two beam segments.

[0073] First, the beam segment is lifted into the air by a hoisting device and placed on a support. Then, the beam segments are connected by splicing components. Finally, the concealed cable is connected. Compared with the method of connecting the beam segments and the concealed cable on the ground and then hoisting the whole, since the structural length of the beam body is relatively large after the connection operation, this method has relatively high requirements for the hoisting device. And during the hoisting process, due to the long structure of the beam body, it is difficult to control the movement and rotation of the beam body. Therefore, the method of hoisting the beam segments into the air first and then performing the connection operation adopted by the present invention can reduce the installation difficulty and the requirements for the hoisting device during the installation process.

[0074] In addition, since the present invention adopts the method of first hoisting the beam segments into the air, then assembling them in the air, and finally performing tensioning, compared with the method of assembling and tensioning on the ground, since the whole composed of the strut, the beam body and the cable is located on the ground during tensioning, the self-weight of the beam body is not applied to the cable. Therefore, during tensioning, it is necessary to calculate the tension force and consider the effect of gravity during the calculation process, resulting in a relatively complex calculation process. And since the gravity factor in the calculation process is not the actual value of the self-weight of the beam body but a calculated estimate, there will be an error in the calculated tension force. The present invention adopts the method of first hoisting and then tensioning. Since the tensioning operation is carried out in the air and the self-weight of the beam body has been applied to the cable, it is not necessary to consider the gravity factor in the calculation of the tension force. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the following will briefly introduce the drawings required for use in the description of the specific embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0076] Figure 1 The front view of the roof load-bearing structure provided in Embodiment 1 of the present invention;

[0077] Figure 2 The connection structure schematic diagram of the beam segment, the concealed cable segment and the splicing component provided in Embodiment 1 of the present invention;

[0078] Figure 3 The connection structure schematic diagram of the support provided in Embodiment 1 of the present invention;

[0079] Figure 4 The connection structure schematic diagram of the second accommodation cavity provided in Embodiment 1 of the present invention;

[0080] Figure 5 The connection structure schematic diagram of the strut provided in Embodiment 1 of the present invention;

[0081] Figure 6 Schematic diagram of the installation structure of the bearing provided in Embodiment 1 of the present invention.

[0082] Explanation of the reference numerals in the drawings:

[0083] 1. Beam body; 2. Support column; 3. Cable; 4. Strut; 5. Bearing; 6. Rebar embedment; 7. Beam segment; 8. Splicing member; 9. Second accommodation cavity; 10. Hidden cable segment; 11. Accommodation groove; 12. First accommodation cavity; 13. End face; 14. Length face. Detailed implementation manners

[0084] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0085] In the description of the present invention, it should be noted that the terms "first" and "second" are only used for distinction and cannot be understood as indicating or implying relative importance.

[0086] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0087] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0088] Embodiment 1

[0089] This embodiment provides a load-bearing beam, as Figures 1 - 4 and Figure 6 shown, including

[0090] The beam body 1. In this embodiment, the shape of the beam body 1 is not limited. The cross-section perpendicular to the axis can be rectangular, circular, etc. shapes, and the beam body 1 can be a positive arch convex toward the roof side, or it can be non-arched, or it can be an inverted arch convex toward the side away from the roof. Preferably, as Figure 1 shown, the beam body 1 in this embodiment is an inverted arch to reduce the height of the building and improve the aesthetic degree of the building. The beam body 1 in this embodiment includes a plurality of beam segments 7.

[0091] The splicing member 8, which is a metal member, is arranged at the ends of adjacent beam segments 7 and is fixedly connected to the two adjacent beam segments 7 respectively.

[0092] In this embodiment, the structure of the splicing member 8 is not specifically limited. As a preferred solution, as Figure 2 shown, a plurality of insertion rods are provided at both ends of the splicing member 8, and insertion holes adapted to the insertion rods are provided at the ends of the beam segment 7, so that the splicing member 8 is inserted and connected to the beam segment 7; of course, in other embodiments, the splicing member 8 can also be set as a sleeve structure adapted to the shape of the beam segment 7 and sleeved with the ends of the two adjacent beam segments 7 to fixedly connect the two beam segments 7.

[0093] The support 5, preferably a metal member, such as Figure 1 , Figure 3 and Figure 4 shown, is arranged at both ends of the beam body 1, and a second accommodation cavity 9 for accommodating the beam body 1 is provided thereon. The end of the beam body 1 is embedded in the second accommodation cavity 9, and the end face 13 and the length face 14 of the beam body 1 are both in contact with the corresponding cavity walls of the second accommodation cavity 9. Among them, the end face 13 is in contact with the side cavity wall of the second accommodation cavity 9, so that the second accommodation cavity 9 plays a role in restricting the beam segment 7 along the length direction of the beam body 1, avoiding loosening of the multiple beam segments 7 forming the beam body 1 along the length direction of the beam body 1. Its length face 14 is in contact with the bottom cavity wall of the second accommodation cavity 9, so that the second accommodation cavity 9 plays a supporting role for the beam segment 7, as Figure 3 and Figure 4 shown, the top surface of the support 5 and the bottom cavity wall of the second accommodation cavity 9 both support the beam body 1. By increasing the force-bearing surface between the beam body 1 and the support 5, the force per unit area of the force-bearing surface of the beam body 1 is reduced, thereby avoiding the phenomenon that the beam body 1 is deformed or even bent and broken due to the concentrated support force of the beam body 1 by the support 5.

[0094] In this embodiment, the connection structure between the support 5 and the beam body 1 is not limited. Preferably, as Figure 1 and Figure 3 shown, a first accommodation cavity 12 is provided at the end of the beam body 1. The opening of the first accommodation cavity 12 is located at the bottom of the beam body 1, and the first accommodation cavity 12 is located on the axis of the beam body 1. In this embodiment, the first accommodation cavity 12 is a groove adapted to the shape of the support 5, and a protruding portion adapted to the second accommodation cavity 9 is provided in the center of the first accommodation cavity 12. The support 5 is embedded in the first accommodation cavity 12, the protruding portion is embedded in the second accommodation cavity 9 and is in contact with the second accommodation cavity 9, and the support 5 and the beam body 1 are connected through a rebar member 6 arranged perpendicular to the support 5. Preferably, the rebar member 6 in this embodiment is a bolt; of course, in other embodiments, the end of the beam body 1 can be directly embedded in the second accommodation cavity 9 without setting the first accommodation cavity 12.

[0095] Of course, the connection manner between the first accommodation cavity 12 and the support 5 in this embodiment is not specifically limited. In other embodiments, the support 5 is fixed in the first accommodation cavity 12 through a clamping structure, and the above-mentioned clamping structure is a hook and a buckle.

[0096] The structure of the support 5 is not limited in this embodiment. Preferably, as Figure 3 and Figure 6 shown, the support 5 is a plate-like structure provided with a second accommodation cavity 9. One end of the support 5 away from the hidden cable segment 10 is located in the first accommodation cavity 12, and it is connected to the beam body 1 through a plurality of rebar embedment members 6 arranged in the vertical direction of the support 5. One end of the support 5 close to the hidden cable segment 10 forms an ear plate suitable for connecting the cable 3 below the beam body 1. Preferably, the top of the ear plate is connected to the beam body 1 through the rebar embedment member 6.

[0097] Hidden cable segment 10. Preferably, there are multiple splicing members 8 in this embodiment. The hidden cable segments 10 between the splicing members 8 are respectively connected to the adjacent splicing members 8, and the hidden cable segments 10 between the support 5 and the splicing members 8 are respectively connected to the adjacent support 5 and splicing members 8, so that the support 5, the splicing members 8 and the multiple hidden cable segments 10 in this embodiment are connected into a whole; of course, in other embodiments, when only one splicing member 8 is provided, the hidden cable segment 10 is only respectively connected to the adjacent support 5 and splicing member 8; or in other embodiments, the hidden cable segment 10 is only provided between the adjacent splicing members 8, and at this time it is only respectively connected to the adjacent splicing members 8.

[0098] The hidden cable segment 10 is embedded in the beam segment 7. Preferably, as Figure 2 shown, a receiving groove 11 is provided on one side of the beam segment 7 away from the roof along the length direction of the beam segment 7. The hidden cable segment 10 is embedded in the receiving groove 11, so that in the use state of this embodiment, the use state and whether there is damage of the hidden cable segment 10 can be directly observed through the receiving groove 11, and at the same time, it is convenient to perform connection operations on the ends of the hidden cable segment 10; of course, in other embodiments, through holes can be provided on the beam segment 7 along its length direction, and the hidden cable segment 10 is located in the through holes.

[0099] The end of the hidden cable segment 10 is provided with a joint, and the insertion rod at the end of the splicing member 8 located in the receiving groove 11 is hinged to the corresponding joint; preferably, when the ear plate of the support 5 connecting the cable 3 is located in the receiving groove 11, the joint at the end of the hidden cable segment 10 can be directly hinged to the ear plate. When the ear plate of the support 5 connecting the cable 3 does not coincide with the receiving groove 11, the support 5 is provided with another ear plate for hinging the joint at the end of the hidden cable segment 10; of course, when the ear plate of the support 5 connecting the cable 3 is located in the receiving groove 11, another ear plate for hinging the joint at the end of the hidden cable segment 10 can also be provided separately.

[0100] This embodiment also provides a load-bearing beam, such asFigures 1 - 6 As shown in the figure, it includes the above-mentioned load-bearing beam; and a cable 3 connecting the supports 5 at both ends of the beam body 1. Preferably, the end of the cable 3 in this embodiment is provided with a joint, and the joint is hinged to the ear plate.

[0101] There is no limit to the number of cables 3 in this embodiment. Preferably, as Figure 3 and Figure 5 shown in the figure, the cables 3 are symmetrically arranged along the axis of the beam body 1. At this time, two ear plates are correspondingly provided on the support 5.

[0102] A strut 4, preferably a metal member, one end of which is fixedly connected to the beam body 1 and the other end is connected to the cable 3 to provide prestress to the beam body 1.

[0103] There is no limitation on the connection method between the strut 4 and the beam body 1 in this embodiment. It can be connected only by a plug-in method in which the end is embedded in the beam body 1. Preferably, as Figure 5 shown in the figure, the end of the strut 4 in this embodiment is provided with a T-shaped structure, and the plate-like member inserted into the beam body 1 in the T-shaped structure is connected to the beam body 1 through the rebar embedment member 6.

[0104] There is no limitation on the connection method between the strut 4 and the cable 3 in this embodiment. A through hole for the cable 3 to pass through can be provided at the end of the strut 4, or a groove for the cable 3 to be embedded can be provided at the end of the strut 4. In this embodiment, a through-hole-shaped cable clamp is provided; when the cables 3 are arranged in pairs, as Figure 5 shown in the figure, the cables 3 are arranged on both sides of the strut 4.

[0105] There is no specific limitation on the material of the beam body 1 in this embodiment. This embodiment preferably uses it in wooden buildings, that is, the beam body 1 is made of wood, which can effectively solve the problem of small span caused by insufficient rigid strength of the wooden structure. Of course, in other embodiments, this embodiment can also be used in steel buildings and steel-concrete buildings, that is, the beam body 1 is a steel member.

[0106] A support column 2, preferably a metal member, is used to support the support 5, so that the tension of the cable 3 is directly transmitted to the support column 2 through the support 5. Compared with the prior art in which the beam body 1 is directly connected to the support column 2 and the connecting member of the cable 3 is located on one side of the support column 2, so that the tension of the cable 3 needs to act on the beam body 1 first and then be transmitted to the support column 2 by the beam body 1. In this embodiment, since the support 5 connecting the cable 3 is arranged on the support column 2, the tension of the cable 3 acting on both ends of the beam body 1 in opposite directions is avoided, and the end of the beam body 1 is damaged due to excessive force.

[0107] In this embodiment, the connection method between the support column 2 and the support 5 is not specifically limited. They can be connected by welding, or a boss can be provided at the bottom of the support 5 and inserted into the groove at the top of the support column 2, so that the tension of the cable 3 is directly transmitted to the support column 2 through the support 5, avoiding damage to the beam body 1 caused by the tension acting on the end of the beam body 1.

[0108] This embodiment also provides an installation method for the above-mentioned load-bearing beam, including the following steps:

[0109] S1. Install the hidden cable segments 10 corresponding to each beam segment 7 in the beam segment 7; install the end of the beam body 1 in the second accommodation cavity 9, and fixedly connect the support 5 and the beam body 1 through the rebar embedment member 6; when the first accommodation cavity 12 is provided on the beam body 1, while installing the end of the beam body 1 in the second accommodation cavity 9, the support 5 is also installed in the first accommodation cavity 12.

[0110] S2. Fix the two adjacent beam segments 7 in the beam body 1 through the splicing member 8; that is, insert the multiple insertion rods provided at both ends of the splicing member 8 into the corresponding beam segment 7.

[0111] S3. Fix the adjacent splicing members 8 through the hidden cable segments 10, that is, stretch the hidden cable segments 10 so that the joints at their ends are hinged to the corresponding splicing members 8; fix the adjacent supports 5 and the splicing members 8 through the hidden cable segments 10, that is, stretch the hidden cable segments 10 so that the joints at their ends are hinged to the corresponding ear plates or splicing members 8; the multiple hidden cable segments 10 form a hidden cable running through the beam body 1 in its longitudinal direction.

[0112] This embodiment does not specifically limit the operation positions of the above steps S1 - S3. The above steps S1 - S3 can be directly operated on the ground and then hoisted, that is, hoisted after assembly, and the support 5 is installed on the support column 2. Preferably, in step S2, each component is hoisted into the air for the next operation, and step S2 specifically includes the following steps:

[0113] S2 - 1. Fix the splicing member 8 to any one of the two adjacent beam segments 7.

[0114] S2 - 2. Hoist the beam segment 7 into the air through the hoisting equipment and place it on the support.

[0115] S2 - 3. Fix the splicing member 8 to the other of the two adjacent beam segments 7.

[0116] This embodiment also provides an installation method for the above-mentioned roof load-bearing structure, including the following steps:

[0117] S1. Insert the hidden cable segments 10 corresponding to the respective beam segments 7 into the beam segments 7; and insert the end of the beam body 1 into the second accommodation cavity 9 and fixedly connect it to the beam body 1. When the first accommodation cavity 12 is provided on the beam body 1, while inserting the end of the beam body 1 into the second accommodation cavity 9, the support 5 is also inserted into the first accommodation cavity 12.

[0118] S2. Fix the two adjacent beam segments 7 in the beam body 1 by the splicing member 8, that is, insert the multiple insertion rods provided at both ends of the splicing member 8 into the corresponding beam segments 7.

[0119] S3. Fix the adjacent splicing members 8 by the hidden cable segments 10, that is, stretch the hidden cable segments 10 so that the joints at their ends are hinged to the corresponding splicing members 8. Fix the adjacent supports 5 and the splicing members 8 by the hidden cable segments 10, that is, stretch the hidden cable segments 10 so that the joints at their ends are hinged to the corresponding ear plates or splicing members 8. The multiple hidden cable segments 10 form a hidden cable running through the beam body 1 in its longitudinal direction.

[0120] S4. Insert one end of the T-shaped structure of the strut 4 into the beam body 1, and fixedly connect the plate-shaped member inserted into the beam body 1 to the beam body 1 through the rebar embedment member 6 to fix the strut 4 to the beam body 1. Pass the cable 3 through the cable clamp at the end of the strut 4 to make the cable 3 movably connected to the strut 4.

[0121] S5. Hinge the joint at the end of the cable 3 to the ear plate of the support 5 at both ends of the beam body 1 and provide a tension force to the cable 3 to tension the cable 3.

[0122] In this embodiment, the operating positions of the above steps S1 - S5 are not specifically limited. The above steps S1 - S5 can be directly operated on the ground, and then hoisted, that is, assembled and tensioned and then hoisted, and the support 5 is installed on the support column 2.

[0123] Preferably, hoisting can be carried out in step S5, that is, after assembly, first hoist, and then tension. Step S5 specifically includes the following steps:

[0124] S5 - 1. Connect the cable 3 to the supports 5 at both ends of the beam body 1. At this time, only hinge the joint at the end of the cable 3 to the ear plate of the support 5.

[0125] S5 - 2. Lift the beam body 1 into the air by a hoisting device and place it at a position suitable for installing the beam body 1, that is, fix the support 5 on the support column 2.

[0126] S5 - 3. Provide a tension force to the cable 3 to tension the cable 3.

[0127] Of course, preferably, hoisting can also be carried out in step S2, that is, first hoist each component, then assemble them, and finally carry out tensioning. Specifically, step S2 includes the following steps:

[0128] S2-1, fixedly connect the splicing member 8 to any one of the adjacent two beam segments 7;

[0129] S2-2, hoist the beam segment 7 into the air by a hoisting device and place it on a bracket;

[0130] S2-3, fixedly connect the splicing member 8 to the other one of the adjacent two beam segments 7.

[0131] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A load-bearing beam, characterized in that, Comprising: A beam body (1), the beam body (1) comprising a plurality of beam segments (7); A splicing member (8), the splicing member (8) being a metal member, arranged at the ends of adjacent beam segments (7), and fixedly connected to the two adjacent beam segments (7) respectively; A bearing (5), the bearing (5) being arranged at both ends of the beam body (1), provided with a second accommodating cavity (9) for accommodating the beam body (1), the end of the beam body (1) being embedded in the second accommodating cavity (9) and fixedly connected to the beam body (1), the end face (13) and the length face (14) of the beam body (1) being in contact with the corresponding cavity walls of the second accommodating cavity (9), the end face (13) being in contact with the side cavity wall of the second accommodating cavity (9), and the length face (14) being in contact with the bottom cavity wall of the second accommodating cavity (9); a first accommodating cavity (12) is provided at the end of the beam body (1), the opening of the first accommodating cavity (12) is located at the bottom of the beam body (1), the bearing (5) is embedded in the first accommodating cavity (12); the first accommodating cavity (12) is a groove adapted to the shape of the bearing (5), and a protruding portion adapted to the second accommodating cavity (9) is provided in the center of the first accommodating cavity (12), the bearing (5) is embedded in the first accommodating cavity (12), the protruding portion is embedded in the second accommodating cavity (9) and is in contact with the second accommodating cavity (9); Hidden cable segments (10), the hidden cable segments (10) being respectively connected to adjacent splicing members (8), and / or the hidden cable segments (10) being respectively connected to adjacent bearings (5) and splicing members (8); and the hidden cable segments (10) are embedded in the beam segments (7); A cable (3), connecting the bearings (5) at both ends of the beam body (1).

2. The load-bearing beam according to claim 1, wherein The bearing (5) is of a plate-like structure; the bearing (5) and the beam body (1) are connected through a rebar embedment member (6) arranged in the vertical direction of the bearing (5).

3. The load-bearing beam according to claim 1, wherein, A receiving groove (11) is provided on the side of the beam segment (7) away from the roof along the length direction of the beam segment (7); The hidden cable segment (10) is embedded in the receiving groove (11).

4. A roof load-bearing structure, characterized in that, Comprising: The load-bearing beam according to claim 1; And, A strut (4), one end of which is fixedly connected to the beam body (1) and the other end is connected to the cable (3) to provide prestress to the beam body (1).

5. The roof load-bearing structure according to claim 4, characterized in that, The end of the strut (4) is embedded in the beam body (1) and is connected to the beam body (1) through a rebar embedment member (6).

6. The roof load-bearing structure according to claim 4, wherein, The beam body (1) is made of wood, and the beam body (1) has an inverted arch structure arched away from the roof.

7. The installation method of the load-bearing beam according to claim 1, characterized in that Comprising the following steps: S1, embedding the hidden cable segments (10) corresponding to the respective beam segments (7) in the beam segments (7); and embedding the end of the beam body (1) in the second accommodating cavity (9) and fixedly connecting it to the beam body (1); S2, fixedly connecting two adjacent beam segments (7) in the beam body (1) through the splicing member (8); S3. Fix and connect adjacent splicing members (8) through the hidden cable segment (10); fix and connect the adjacent support (5) and the splicing member (8) through the hidden cable segment (10); multiple hidden cable segments (10) form a hidden cable running through the beam body (1) in its longitudinal direction.

8. The installation method of the load-bearing beam according to claim 7, characterized in that, Step S2 specifically includes the following steps: S2-1. Fix and connect the splicing member (8) to any one of two adjacent beam segments (7). S2-2. Lift the beam segment (7) into the air by a hoisting device and place it on a support. S2-3. Fix and connect the splicing member (8) to the other of the two adjacent beam segments (7).

9. The installation method of the roof load-bearing structure according to claim 4, characterized in that, Include the following steps: S1. Install the hidden cable segment (10) corresponding to each beam segment (7) in the beam segment (7); install the end of the beam body (1) in the second accommodation cavity (9) and fix it to the beam body (1). S2. Fix and connect two adjacent beam segments (7) in the beam body (1) through the splicing member (8). S3. Fix and connect adjacent splicing members (8) through the hidden cable segment (10); fix and connect the adjacent support (5) and the splicing member (8) through the hidden cable segment (10); multiple hidden cable segments (10) form a hidden cable running through the beam body (1) in its length direction. S4. Fix and connect the strut (4) to the beam body (1); and movably connect the cable (3) to the strut (4). S5. Connect the cable (3) to the supports (5) at both ends of the beam body (1) and apply a tension force to the cable (3) to tension the cable (3).

10. The installation method of the roof load-bearing structure according to claim 9, characterized in that, Step S5 specifically includes the following steps: S5-1. Connect the cable (3) to the supports (5) at both ends of the beam body (1). S5-2. Lift the beam body (1) into the air by a hoisting device and place it at a position suitable for installing the beam body (1). S5-3. Apply a tension force to the cable (3) to tension the cable (3).

11. The installation method of the roof load-bearing structure according to claim 10, characterized in that, Step S2 specifically includes the following steps: S2-1. Fix and connect the splicing member (8) to any one of two adjacent beam segments (7). S2-2. Lift the beam segment (7) into the air by a hoisting device and place it on a support. S2-3. Fix and connect the splicing member (8) to the other of the two adjacent beam segments (7).

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