Method for determining construction state of large-span space truss roof
Through temporary limiting devices and three-dimensional adjustable systems, the problem of high-altitude installation of large-span roofs is solved, efficient and accurate construction positioning and error compensation are achieved, and construction efficiency and accuracy are improved.
Patent Information
- Application Number
- CN202510757671.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-06
- Publication Date
- 2025-08-12
AI Technical Summary
It is difficult to install high-altitude roofs with large spans, roof conversion trusses have large spans and high-altitude construction. Traditional construction technology has limitations on construction sites, long construction periods, poor economy, and high-altitude cantilever assembly and semi-altitude assembly are difficult.
A temporary position limiting device is adopted, including installation parts and connection parts, and a ball hinge structure, hydraulic telescopic structure and drive structure are used, combined with the guide rod and the embedded seat body to realize a three-dimensional adjustable system. By combining the guide rod rough adjustment and hydraulic fine adjustment, the six-degree of freedom accurate positioning and error compensation at the end of the truss are achieved.
The construction efficiency is improved by more than 40%, the horizontal position adjustment accuracy is up to ±2mm, the truss closing error is controlled within L/10000, and the operating time is reduced by 60%, meeting the millimeter-level assembly requirements of large-span structures.
Smart Images
Figure CN120465628A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of building construction, and in particular relates to a method for determining the construction status of a large-span space truss roof. Background Art
[0002] The functions and structures of public buildings are becoming increasingly complex, and large-span space truss structures appear in large public buildings such as shopping malls, theaters, and libraries.
[0003] Traditional large-span steel structure construction can be achieved through a combination of high-altitude loose assembly, high-altitude cantilever assembly, integral lifting, jacking, or sliding construction techniques, taking into account factors such as construction site constraints, construction schedule, and economic efficiency. Large tower roof structures are characterized by large spans of transition steel trusses, high and heavy individual trusses, and a lattice steel structure suspended beneath the trusses. Due to the functional requirements of the stadium, the trusses are separated from the bottom construction interface by a large distance, requiring work to be performed dozens of meters above ground. How can we overcome the high-altitude challenges of large-span trusses with lattice steel structures at the bottom, as well as site constraints (e.g., heavy machinery lifting), complex venue structures (inconsistent vertical structures make bottom assembly impossible), and the difficulty of mid-altitude assembly (requiring a cradle and vertical supports, and the weak, pressure-resistant lattice structure beneath the steel trusses, making simultaneous assembly with the upper roof steel trusses difficult?). Therefore, it is crucial to address the challenges of high-altitude roof installation, the large spans of the transition trusses, and the difficulty of high-altitude construction. Summary of the Invention
[0004] The present invention discloses a method for determining the construction status of a large-span spatial truss roof, which aims to solve the problems of difficulty in high-altitude installation of large-span truss roofs and difficulty in high-altitude construction due to the large span of the roof conversion truss. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a construction device for a theater roof structure, comprising a temporary limiting device, the temporary limiting device comprising an installation part and a connection part, the installation part comprising a circular installation seat body and a connection seat body; a plurality of adjusting rods are arranged on the circumference of the installation seat body, and the ends of the adjusting rods are provided with connecting rings, the installation seat body is provided with a coaxial through hole, a guide rod is slidably arranged in the through hole, the installation seat body is provided with a driving structure for driving the guide rod to move, and a ball joint structure is connected between the end of the guide rod and the connection seat body; the connection part comprises an embedded seat body arranged on the vertical building structure, the embedded seat body is provided with a receiving groove for accommodating the connection seat body, the receiving groove is rectangular and has an area larger than the area of the connection seat body, the side walls of the receiving groove are slidably connected to a moving seat, the moving seat is provided with a hydraulic telescopic structure facing the center of the receiving groove, a locking pin is provided between the moving seat and the receiving groove, and the ends of the hydraulic telescopic structure are detachably connected to the side walls of the connection seat body.
[0005] The technical solution adopted in the present invention is as follows:
[0006] Equipment erection: Assemble the tire frame in mid-air and install the support frame between the tire frame and the base plate;
[0007] Embedded seat installation: Lay two layers of installation parts on the vertical structure so that the two layers of installation parts are distributed corresponding to the two hovering points during the lifting process of the roof structure;
[0008] Assembling the truss layer: assemble the truss structure layer of the roof structure one by one on the frame, then connect the connecting rings at both ends of the adjusting rod to the truss structure layer, so that the connection part is installed at the end of the truss structure layer; and install the lifting equipment on the top of the vertical structure of the building; first lifting: connect the steel cable of the lifting equipment to the truss structure layer, use the lifting equipment to perform the first lifting, and stop lifting after the end of the truss structure layer is facing the installation part of the first layer; rotate the annular block, the limit teeth separate, and the limit teeth are out of the limit groove under the action of the elastic reset member; then energize the electromagnet to push The movable protrusion and the electromagnet attract the limit rod, allowing the support to slide relative to the guide groove; the guide rod is then driven to move by the driving structure, thereby pushing the connecting seat body at the end of the guide rod to move toward the embedded seat body until the embedded seat body extends into the receiving groove; the position of the movable seat is then adjusted, and the hydraulic telescopic structure at the end of the moving section is connected to the side wall of the connecting seat body; the closing plate is then deflected to close the receiving groove, and the connecting piece is installed to fix the closing plate; during the entire process, the length of the connecting piece is adjusted by deflecting the supporting rods of the cross unit relative to each other, so that the connecting seat body, the mounting seat body and the support ring are kept connected;
[0009] Adjustment: By adjusting the position of the movable seat and coordinating the expansion and contraction of the hydraulic telescopic structure, the position of the connecting seat body is adjusted, and then the angle and position of the truss structure layer are adjusted through the guide rod and the mounting seat body, and the horizontal position of the truss structure layer is adjusted by the driving structure to drive the movement of the guide rod to ensure that the position of the truss structure layer meets the design requirements, thereby ensuring the assembly accuracy of the grid structure; at this time, the annular block is rotated in the opposite direction, and the limit teeth are pushed into the limit groove by pushing the protrusion, thereby limiting the sliding of the support ring relative to the guide rod; and the electromagnet is powered off, and the limit rod is inserted into the limit hole under the action of the elastic support member, limiting the sliding of the support, thereby limiting the length of the connecting member, and using the connecting member and the support ring to play a supporting role between the connecting seat body and the mounting seat body; in addition, when the guide rod is subjected to shear force, the support rings adjacent on both sides of the guide rod at the shear force position engage with the limit teeth and the limit groove, and cooperate with the support of the connecting member to convert the shear force into the axial force of the guide rod, thereby improving the shear resistance of the guide rod;
[0010] Grille structure assembly: Assemble the lower grille structure layer at the bottom of the truss structure layer;
[0011] Second lifting: After removing the connector, reset the closing plate and separate the hydraulic telescopic structure from the connecting base. Rotate the annular block again and energize the electromagnet. Then, drive the guide rod through the drive structure to reset the connecting base. Then, perform the second lifting until the end of the truss structure layer is aligned with the installation position of the second layer and then stop lifting.
[0012] Roof structure installation: Repeat step 5 to adjust the truss structure layer into place, and fill in the connecting rods between the roof structure and the vertical structure; then dismantle the equipment in sequence.
[0013] Beneficial effects of the present invention:
[0014] 1. A split design combines the mounting area (including the drive guide rod) and the connection area (including the hydraulic adjustment embedded seat) through a ball joint structure, forming a three-dimensional adjustable system. The advantage lies in the coordinated operation of the multi-directional adjustment rod of the mounting body and the hydraulic telescopic structure of the embedded body to achieve precise positioning of the truss end with 6 degrees of freedom. The error tolerance is compensated by the rectangular accommodating groove design, solving the problem of cumulative error caused by traditional welding fixation.
[0015] 2. Establish a three-stage coordinated adjustment system: "drive structure - guide rod - hydraulic expansion and contraction." This system combines coarse guide rod adjustment with fine hydraulic adjustment. This system improves construction efficiency by over 40%, achieving a horizontal position adjustment accuracy of ±2mm, meeting the millimeter-level assembly requirements for large-span structures. Actual measurement data shows that this method can control the closing error of a 200-meter span truss to within L / 10,000.
[0016] 3. The innovative design of the sliding support ring and the limit tooth mechanism, combined with the adjustable connector, forms a distributed support network. Advantages: The elastic engagement design of the limit teeth enables the support ring to quickly switch between sliding and locking states, reducing operation time by 60%. The cross unit design achieves discontinuous support, allowing local adjustment without affecting overall stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the truss roof of the present invention;
[0018] Figure 2 It is a structural schematic diagram of the present invention;
[0019] Figure 3 This is the enlarged part of support node 9;
[0020] Figure 4 This is the enlarged part of support node A;
[0021] The markings in the accompanying drawings are as follows: 1 is the mounting seat body, 2 is the connecting seat body, 3 is the adjusting rod, 4 is the connecting ring, 5 is the guide rod moving seat, 6 is the embedded seat body, 7 is the adjusting movable seat, 8 is the hydraulic telescopic structure, 9 is the supporting ring, 10 is the limiting tooth, 11 is the elastic reset part, 12 is the annular block, 13 is the moving protrusion, 14 is the limiting protrusion, 15 is the support rod, 16 is the support, 17 is the limiting rod, 18 is the elastic support part, 19 is the electromagnet, 20 is the closing plate, the bottom plate 21, the tire frame 22, the support frame 23, the truss structure layer 24, the vertical structure 25, and the lifting equipment 26. DETAILED DESCRIPTION
[0022] like Figure 1 、 Figure 2 As shown: During the construction process, it is first necessary to divide the embedded seat 6 into two layers on the vertical structure 25, corresponding to the two hovering positions during the truss lifting process, to ensure that they can be accurately docked later. Then, an assembly frame 22 is erected in mid-air, and a support frame 23 is installed between the frame and the base plate 21 to form a stable assembly platform. After assembling the truss structure layer 24 one by one on the frame 22, the temporary limit device is fixed to the end of the truss by adjusting the rod 3 and the connecting ring 4. The lifting equipment 26 is connected to the truss structure layer 24 through a steel cable and slowly lifted to the first hovering position so that the end of the truss is preliminarily aligned with the first layer of embedded seat 6. At this time, the truss position is fine-tuned by the guide rod 5 and the hydraulic telescopic structure 8 to ensure that the connecting seat 2 can smoothly enter the receiving groove of the embedded seat 6 and complete the preliminary positioning. When the truss is hovering, the driving structure on the installation seat 1 is started to push the guide rod 5 toward the embedded seat 6 so that the connecting seat 2 enters the receiving groove. Then, adjust the position of the movable seat 7 so that the hydraulic telescopic structure 8 connects to the side wall of the connecting seat 2. The horizontal and vertical position of the truss is fine-tuned by hydraulic telescopic adjustment with an accuracy of ±2mm. Once adjusted into position, insert the locking pin of the movable seat 7 to ensure that the connecting seat 2 is stable and prevent displacement during construction. Finally, rotate the closing plates 20 on both sides of the embedded seat 6 to cover the opening of the receiving slot and secure it with the connector to prevent external factors from interfering with the limit device, completing the precise fixation of the truss.
[0023] like Figure 3 As shown: When the position of the guide rod 5 needs to be adjusted, the annular block 12 is rotated forward to disengage the pushing protrusion 13 from the limiting tooth 10. The limiting tooth retracts under the action of the elastic reset member 11, and the support ring 9 can slide freely along the guide rod 5. At the same time, the electromagnet 19 is energized to adsorb the limiting rod 17 out of the limiting hole, so that the support 16 can slide, and the cross unit support rod 15 is deflected accordingly, and the length of the connector is adjusted to adapt to the change in the truss position. After the adjustment is completed, the annular block 12 is rotated in the opposite direction to push the protrusion 13 to press the limiting tooth 10 so that it engages the limiting groove of the guide rod 5 and fixes the position of the support ring 9. If the guide rod 5 is subjected to lateral force, the adjacent support rings 9 convert the shear force into axial force through the limiting teeth 10 and the connector, thereby enhancing the overall stability and ensuring construction safety;
[0024] like Figure 4 As shown: after the electromagnet 19 is energized, the limit rod 17 is adsorbed and retracted into the chamber, allowing the support 16 to slide freely in the guide groove, and the support rod 15 can now deflect freely. When the truss position is adjusted by driving the guide rod 5 or the hydraulic telescopic structure 8, the support rod 15 automatically deflects, and the length of the connector changes accordingly, ensuring that support is always maintained between the connecting seat 2, the mounting seat 1 and the support ring 9. After adjustment, the electromagnet 19 is turned off, and the elastic support member 18 pushes the limit rod 17 into the limit hole to fix the position of the support 16, thereby locking the length of the connector. This design allows for adjustment of individual connectors without affecting the overall structure. It is particularly suitable for dynamic adjustment needs in high-altitude assembly, and improves the flexibility and accuracy of construction.
Claims
1. A method for determining the construction status of a large-span space truss roof, characterized by: The steps include: Step 1: The temporary limiting device comprises a mounting portion and a connecting portion, wherein the mounting portion comprises a circular mounting seat body (1) and a connecting seat body (2); a plurality of adjusting rods (3) are provided on the circumference of the mounting seat body (1), and the ends of the adjusting rods (3) are provided with connecting rings (4); a coaxial through hole is provided on the mounting seat body (1), and a guide rod (5) is slidably provided in the through hole; a driving structure for driving the guide rod (5) to move is provided on the mounting seat body (1), and the ends of the guide rod (5) are connected to the connecting seat body ( 2) are connected with a ball joint structure; the connecting portion includes an embedded seat body (6) arranged on the vertical building structure, the embedded seat body (6) is provided with a receiving groove for accommodating the connecting seat body (2), the receiving groove is rectangular and the side walls are slidably connected to a movable seat (7), the movable seat (7) is provided with a hydraulic telescopic structure (8) facing the center of the receiving groove, a locking pin is provided between the movable seat (7) and the receiving groove, and the ends of the hydraulic telescopic structure (8) are detachably connected to the side walls of the connecting seat body (2); Step 2: Install the installation part of the temporary limit device at the end of the roof structure, and when the roof structure is suspended, drive the guide rod (5) to move through the driving structure, thereby pushing the connecting seat body (2) at the end of the guide rod (5) to move toward the embedded seat body (6) until the embedded seat body (6) extends into the receiving groove; then adjust the position of the moving seat (7), and connect the hydraulic telescopic structure (8) at the end of the moving section to the side wall of the connecting seat body (2); then adjust the position of the moving seat (7) in conjunction with the expansion and contraction of the hydraulic telescopic structure (8), thereby adjusting the position of the connecting seat body (2), and then adjust the angle and position of the truss structure layer (24) through the guide rod (5) and the installation seat body (1), and use the driving structure to drive the movement of the guide rod (5) to adjust the horizontal position of the truss structure layer, ensuring that the position of the truss structure layer (24) meets the design requirements, thereby ensuring the assembly accuracy of the structure; The installation of the embedded seat body (6) requires laying two layers of installation parts on the vertical structure (25), assembling the tire frame (22) in mid-air, and installing the support frame (23) between the tire frame (22) and the bottom plate (21), assembling the truss structure layer (24) of the roof structure on the tire frame (22) one by one, and then connecting the connecting rings (4) at both ends of the adjusting rod (3) to the truss structure layer (24), thereby installing the connection part at the end of the truss structure layer (24), and then driving the guide rod (5) through the driving structure to drive the connection seat body (2) to be lifted; Step 3: The guide rod (5) is slidably connected to a plurality of support rings (9), the inner walls of the support rings (9) are provided with sliding grooves facing the axis thereof, the sliding grooves are slidably connected to limit teeth (10), elastic reset is provided between the limit teeth (10) and the sliding grooves, the outer wall of the support ring (9) is rotatably connected to an annular block, the support ring (9) is provided with a rotating structure for driving the annular block to rotate, the inner wall of the annular block is provided with a pushing protrusion for pushing the limit teeth (10), and the end of the pushing protrusion is arc-shaped; the circumference of the guide rod (5) is provided with a plurality of limiting grooves cooperating with the limit teeth (10); a plurality of groups of length-adjustable connecting pieces are provided between adjacent support rings (9) and between the support rings (9) and the mounting seat body (1) and the connecting seat body (2); Step 4: When the connecting seat (2) needs to move, the annular block (12) is rotated forward to separate the pushing protrusion (13) from the limiting tooth (10). The limiting tooth (10) is disengaged from the limiting groove under the action of the elastic reset member (11), so that the support ring (9) can move relative to the guide rod (5). The length of the connecting member is adjusted so that the connecting seat (2) can move relative to the mounting seat (1); the limiting tooth (10) is pushed to be inserted into the limiting groove to limit the sliding of the supporting ring (9) relative to the guide rod (5) and limit the length of the connecting member at the same time. The supporting ring (9) and the connecting member can be used to support the connecting seat (2) and the mounting seat (1) by means of the cooperation between the supporting ring (9) and the connecting member, thereby providing stability for the temporary limiting device. Step 5: The connecting piece comprises a plurality of mutually hinged cross units, and the side walls of the support ring (9), the connecting seat body (2) and the mounting seat body (1) are all provided with a plurality of guide grooves corresponding to the connecting piece, and two symmetrically arranged supports (16) are slidably connected in the guide grooves, and the supports are hinged to the ends of adjacent support rods (15), and a plurality of limiting holes are provided on the side walls of the guide grooves, and a cavity is provided inside the supports (16), and through grooves facing the limiting holes are provided on both sides of the cavity, and limiting rods (17) are slidably connected in the through grooves; Step 6: Connect the steel cable of the lifting device (26) to the truss structure layer (24) until the end of the truss structure layer (24) is aligned with the installation position of the first layer. When the length of the connecting piece needs to be adjusted, the electromagnet (19) is energized, and the electromagnet (19) adsorbs the limiting rod (17), so that the support (16) can slide relative to the guide groove, thereby enabling the support rod (15) of the cross unit to deflect relative to each other, thereby adjusting the length of the connecting piece; when the electromagnet (19) is deenergized, the limiting rod (17) is inserted into the limiting hole under the action of the elastic support member (18), limiting the sliding of the support (16), thereby limiting the length of the connecting piece; the entire operation process is simple and quick; in addition, when the guide rod (5) is subjected to shear force, the support rings (9) adjacent to the two sides of the guide rod (5) at the position subjected to the shear force engage with the limiting groove through the limiting teeth (10), cooperate with the support of the connecting piece, and convert the shear force into the axial force of the guide rod (5), thereby improving the shear resistance of the guide rod (5).
2. A method for determining the construction status of a large-span space truss roof according to claim 1, characterized in that: The guide rod (5) is slidably connected to a plurality of support rings (9), the inner walls of the support rings (9) are provided with sliding grooves facing the axis thereof, the sliding grooves are slidably connected to limit teeth (10), an elastic reset member is provided between the limit teeth (10) and the sliding grooves, the outer wall of the support ring (9) is rotatably connected to an annular block (12), the support ring (9) is provided with a rotating structure for driving the annular block (12) to rotate, the inner wall of the annular block (12) is provided with a pushing protrusion (13) for pushing the limit teeth (10), the end of the pushing protrusion (13) is arc-shaped; the peripheral side of the guide rod (5) is provided with a plurality of limit grooves cooperating with the limit teeth (10); a plurality of groups of length-adjustable connecting members are provided between adjacent support rings (9) and between the support ring (9) and the mounting seat body (1) and the connecting seat body (2).
3. The method for determining the construction status of a large-span space truss roof according to claim 1, characterized in that: The connecting piece comprises a plurality of mutually hinged cross units, and the cross units comprise two mutually hinged support rods (15) at the middle portions; the side walls of the support ring (9), the connecting seat body (2) and the mounting seat body (1) are all provided with a plurality of guide grooves corresponding to the connecting piece, two symmetrically arranged supports (16) are slidably connected in the guide grooves, the supports (16) are hinged to the ends of adjacent support rods (15), a plurality of limiting holes are provided on the side walls of the guide grooves, a cavity is provided inside the supports, through grooves facing the limiting holes are provided on both sides of the cavity, limiting rods (17) are slidably connected in the through grooves, and the same elastic support members (18) are provided between the limiting rods (17) and the through grooves, and an electromagnet (19) for adsorbing the limiting rods is provided in the cavity.
4. The method for determining the construction status of a large-span space truss roof according to claim 1, characterized in that: Two closing plates (20) are hingedly connected to both sides of the end surface of the embedded seat body (6), the ends of the closing plates (20) are each provided with an opening, and connecting pieces are detachably connected between adjacent closing plates (20); The annular block is driven to rotate by the rotating structure, so that the pushing protrusion (13) is separated from the limiting tooth (10), and the limiting tooth (10) is separated from the limiting groove under the action of the elastic reset member (11); then the electromagnet (19) is energized, and the electromagnet (19) adsorbs the limiting rod (17), so that the support (16) can slide relative to the guide groove; then the guide rod (5) is driven to move by the driving structure, thereby pushing the connecting seat body (2) at the end of the guide rod (5) to move toward the embedded seat body (6) until the embedded seat body (6) extends into the receiving groove; then the position of the movable seat (7) is adjusted, and the hydraulic telescopic structure (8) at the end of the movable section is connected to the side wall of the connecting seat body (2); during the whole process, the length of the connecting member is adjusted by the mutual deflection of the support rods (15) of the cross unit, so that the connection between the connecting seat body (2), the mounting seat body (1) and the support ring (9) is maintained.
5. The method for determining the construction status of a large-span space truss roof according to claim 1, characterized in that: The position of the adjusting movable seat (7) cooperates with the expansion and contraction of the hydraulic telescopic structure (8) to adjust the position of the connecting seat body (2), and then adjusts the angle and position of the truss structure layer through the guide rod (5) and the mounting seat body (1), limiting the sliding of the support ring (9) relative to the guide rod (5); and the electromagnet (19) is powered off, and the limit rod (17) is inserted into the limit hole under the action of the elastic support member (18), limiting the sliding of the support (16); the connecting member and the support ring (9) are used to play a supporting role between the connecting seat body (2) and the mounting seat body (1); in addition, when the guide rod (5) is subjected to shear force, the support rings (9) adjacent to the two sides of the guide rod (5) at the position subjected to the shear force are engaged with the limit teeth and the limit groove, and cooperate with the support of the connecting member to convert the shear force into the axial force of the guide rod (5), thereby improving the shear resistance of the guide rod (5).