A construction method for constructing a large-span steel structure truss in a limited space

Abstract

The present invention discloses a construction method for constructing a large-span steel structure truss in a limited space, comprising the following steps: determining an installation position of a lifting device on an existing building structure column, and installing the lifting device on the existing building structure column; assembling a first steel structure truss and a second steel structure truss respectively, and connecting them to the lifting device; lifting the first steel structure truss and the second steel structure truss to the same height and then connecting them, then lifting the connected steel structure truss to the installation position, installing a patching rod assembly, and installing the steel structure truss on the existing building structure column, removing the lifting device, and completing the construction. By utilizing the existing building structure column, installing the lifting device on the structure column, and adopting an on-site assembly and on-site lifting method, the large-span steel structure truss can be quickly hoisted even in a limited space without the need for large-scale hoisting equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a construction method for constructing a large-span steel structure truss in a limited space. Background Art

[0002] Traditionally, large-scale lifting equipment is used to hoist steel structures in construction. However, this approach was inadequate for the Hengdian Station steel structure project. The east and west sides of the project are flanked by railway entrances and exits, with both ongoing and completed tracks. Other construction units were also working on the south and north sides of the project, leaving no room for large-scale lifting equipment. Furthermore, the steel structure trusses on the north side of the project had a relatively large span, further complicating the construction process. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention designs a construction method for constructing a large-span steel structure truss in a limited space, comprising the following steps: Step 1, determining the installation position of the lifting device on the existing building structure column; Step 2, installing the lifting device on the existing building structure column; Step 3, assembling the first steel structure truss and the second steel structure truss respectively, and connecting the first steel structure truss and the second steel structure truss to the lifting device respectively; Step 4, lifting the first steel structure truss and the second steel structure truss to the same height, and connecting the first steel structure truss to the second steel structure truss; Step 5, synchronously lifting the first steel structure truss and the second steel structure truss connected as a whole to the installation position, and installing the patch rod assembly; Step 6, installing the assembled large-span steel structure truss on the existing building structure column, and removing the lifting device, and the construction is completed.

[0004] Preferably, in step 1, the installation position of the lifting device on the existing building structure column is determined, including the following steps: establishing a model of the existing building structure column and the large-span steel structure truss; establishing a model of the lifting device on the building structure column; simulating lifting through the model of the lifting device and the model of the large-span steel structure truss, and judging whether the model of the lifting device will collide with the model of the large-span steel structure truss during the simulated lifting process. If there is no collision, the position of the lifting device is the final installation position; if a collision occurs, the model position of the lifting device is adjusted, and the lifting is re-simulated until the positions of all lifting devices are determined.

[0005] Preferably, in step 2, the lifting device is installed on the existing building structure column, including the following steps: installing a lifting device on the inner side of the existing building structure column at the edge position; installing a lifting device on each side of the existing building structure column at the middle position; and connecting all the lifting devices to the control system.

[0006] Preferably, in step 3, the first steel structure truss and the second steel structure truss are assembled respectively, including the following steps: assembling the first steel structure truss at a first assembly position, wherein the first assembly position is the first constructed floor directly below the installation position of the first steel structure truss; assembling the second steel structure truss at a second assembly position, wherein the first assembly position is the first constructed floor directly below the installation position of the second steel structure truss.

[0007] Preferably, the first assembly position is lower than the second assembly position.

[0008] Preferably, in step 4, the first steel structure truss and the second steel structure truss are lifted to the same height, comprising the following steps: controlling a lifting device connected to the first steel structure truss through a control system to lift the first steel structure truss, and the lifting height matches the height difference between the first assembly position and the second assembly position.

[0009] Preferably, in step 5, the first steel structure truss and the second steel structure truss connected as a whole are synchronously lifted to the installation position, including the following steps: controlling all lifting devices to lift synchronously through a control system, and lifting the first steel structure truss and the second steel structure truss connected as a whole to the installation position synchronously.

[0010] Preferably, the large-span steel structure truss includes: a first steel structure truss, a second steel structure truss and a patching rod assembly; the number of the second steel structure trusses is two, and the two second steel structure trusses are respectively installed at both ends of the first steel structure truss, and the first steel structure truss and the second steel structure truss are both connected to the patching rod assembly; the number and position of the patching rod assemblies match the number and position of the existing building structure columns.

[0011] Preferably, the lifting device includes: a sling, a first fixing frame and a second fixing frame; wherein the sling is fixedly mounted on the first fixing frame; the first fixing frame is mounted on an existing building structure column through the second fixing frame; the sling is connected to the first steel structure truss or the second steel structure truss.

[0012] Compared with the closest prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention utilizes existing building structure columns, installs lifting devices on the structure columns, and adopts the method of on-site assembly and on-site lifting. It can complete the lifting without large-scale lifting equipment. When space is limited, the large-span steel structure truss can be quickly lifted.

[0014] 2. The present invention controls multiple lifting devices simultaneously through a control system, which can ensure that all points of the steel structure truss are lifted synchronously, avoid the steel structure truss from tilting during the lifting process, reduce the deformation of the large-span steel structure truss during the lifting process, and ensure the quality of construction.

[0015] 3. The first floor slab directly below the steel structure truss of the present invention is not on the same level. The steel structure truss at the lower position is first lifted and connected to the steel structure truss at the higher position. After the connection is completed, it is lifted and positioned for installation. This construction method ensures construction efficiency and also ensures the forming quality of the steel structure truss. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic flow chart of the large-span steel structure truss construction method of the present invention.

[0017] Figure 2 This is a first structural schematic diagram of the large-span steel structure truss of the present invention.

[0018] Figure 3 This is a second structural schematic diagram of the large-span steel structure truss of the present invention.

[0019] Figure 4 This is a schematic diagram of the installation structure of the lifting device of the present invention.

[0020] Figure 5 It is a structural schematic diagram of the lifting device of the present invention.

[0021] Figure 6 This is a schematic diagram of the assembly structure of the first steel structure truss of the present invention.

[0022] Figure 7 It is a structural schematic diagram of the first steel structure truss of the present invention.

[0023] Figure 8 This is a schematic diagram of the assembly structure of the second steel structure truss of the present invention.

[0024] Figure 9 It is a structural schematic diagram of the second steel structure truss of the present invention.

[0025] Figure 10 This is a schematic diagram of the connection structure between the first steel structure truss and the second steel structure of the present invention.

[0026] Figure 11 It is a schematic diagram of the synchronous hoisting structure of the first steel structure truss and the second steel structure truss of the present invention.

[0027] Figure 12 This is a structural schematic diagram of the installation of the patching rod assembly of the present invention.

[0028] Figure 13 It is a structural schematic diagram of the patching rod assembly of the present invention.

[0029] Reference numerals:

[0030] 1-first steel structure truss, 2-second steel structure truss, 3-existing building structure column, 4-lifting device, 41-spreader, 42-first fixing frame, 43-second fixing frame, 5-patch rod assembly. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] Example 1

[0033] like Figures 1-13 As shown, the present invention provides a construction method for constructing a large-span steel structure truss in a limited space, comprising the following steps:

[0034] S1. Determine the installation position of the lifting device 4 on the existing building structure column 3: establish a model of the existing building structure column 3 and the large-span steel structure truss; establish a model of the lifting device 4 on the building structure column 3; simulate hoisting using the model of the lifting device 4 and the model of the large-span steel structure truss to determine whether the model of the lifting device 4 will collide with the model of the large-span steel structure truss during the simulated hoisting process. If there is no collision, the position of the lifting device 4 is the final installation position; if a collision occurs, adjust the model position of the lifting device 4 and re-simulate the hoisting until the positions of all lifting devices 4 are determined. The lifting device 4 includes: a sling 41, a first fixing frame 42, and a second fixing frame 43; the sling 41 is fixedly mounted on the first fixing frame 42; the first fixing frame 42 is mounted on the existing building structure column 3 via the second fixing frame 43; the sling 41 is connected to the first steel structure truss 1 or the second steel structure truss 2. By utilizing existing building structural columns and installing lifting devices on them, the system adopts an on-site assembly and lifting method. This eliminates the need for large-scale lifting equipment to complete the lifting, allowing large-span steel trusses to be quickly and efficiently installed even in limited space. By controlling multiple lifting devices simultaneously through a control system, the lifting of each point on the steel truss can be ensured to be synchronized, preventing the steel truss from tilting during the lifting process and reducing deformation of the large-span steel truss during the lifting process, thus ensuring the quality of construction.

[0035] S2. Install the lifting device 4 on the existing building structure column 3: install a lifting device 4 on the inner side of the existing building structure column 3 at the edge position; install a lifting device 4 on each side of the existing building structure column 3 at the middle position; connect all the lifting devices 4 to the control system.

[0036] S3. Assemble the first steel structure truss 1 and the second steel structure truss 2 respectively, and connect the first steel structure truss 1 and the second steel structure truss 2 to the lifting device 4 respectively; wherein, assembling the first steel structure truss 1 and the second steel structure truss 2 respectively includes: assembling the first steel structure truss 1 at a first assembly position, wherein the first assembly position is the first constructed floor directly below the installation position of the first steel structure truss 1; assembling the second steel structure truss 2 at a second assembly position, wherein the first assembly position is the first constructed floor directly below the installation position of the second steel structure truss 2. The first assembly position is lower than the second assembly position. wherein, the long-span steel structure truss includes: a first steel structure truss 1, a second steel structure truss 2 and a patching rod assembly 5; the number of the second steel structure trusses 2 is two, and the two second steel structure trusses 2 are respectively installed at both ends of the first steel structure truss 1, and the first steel structure truss 1 and the second steel structure truss 2 are both connected to the patching rod assembly 5; the number and position of the patching rod assembly 5 match the number and position of the existing building structure columns 3.

[0037] S4. Lift the first steel structure truss 1 and the second steel structure truss 2 to the same height, and connect the first steel structure truss 1 to the second steel structure truss 2. Wherein, lifting the first steel structure truss 1 and the second steel structure truss 2 to the same height includes: controlling the lifting device 4 connected to the first steel structure truss 1 through the control system to lift the first steel structure truss 1, and the lifting height matches the height difference between the first assembly position and the second assembly position. The first floor slab constructed directly below the steel structure truss is not on the same horizontal plane. First, lift the steel structure truss at a lower position and connect it to the steel structure truss at a higher position. After the connection is completed, lift and position and install. This construction method ensures construction efficiency and also ensures the forming quality of the steel structure truss.

[0038] S5. The control system controls all the lifting devices 4 to lift synchronously, lifts the first steel structure truss 1 and the second steel structure truss 2 connected as a whole to the installation position synchronously, and installs the patching rod assembly 5.

[0039] S6. Install the assembled large-span steel structure truss on the existing building structure column 3, and remove the lifting device 4. The construction is completed.

[0040] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the pending claims.

Claims

1. A construction method for constructing a large-span steel structure truss in a limited space, characterized in that: The following steps are involved: Step 1: Determine the installation position of the lifting device (4) on the existing building structure column (3); Step 2: Install the lifting device (4) on the existing building structure column (3); Step 3: assemble the first steel structure truss (1) and the second steel structure truss (2) respectively, and connect the first steel structure truss (1) and the second steel structure truss (2) to the lifting device (4) respectively; Step 4: Lift the first steel structure truss (1) and the second steel structure truss (2) to the same height, and connect the first steel structure truss (1) and the second steel structure truss (2); Step 5: synchronously lifting the first steel structure truss (1) and the second steel structure truss (2) connected as a whole to the installation position, and installing the patching rod assembly (5); Step 6: Install the assembled large-span steel structure truss on the existing building structure column (3) and remove the lifting device (4). The construction is completed. In step 1, the installation position of the lifting device (4) on the existing building structure column (3) is determined, including the following steps: Model the existing building structure columns (3) and the long-span steel structure trusses; Building a model of a lifting device (4) on a building structure column (3); By simulating the hoisting of the model of the lifting device (4) and the model of the long-span steel structure truss, it is determined whether the model of the lifting device (4) will collide with the model of the long-span steel structure truss during the simulated hoisting process. If there is no collision, the position of the lifting device (4) is the final installation position; If a collision occurs, adjust the model position of the lifting device (4) and re-simulate the lifting until the positions of all lifting devices (4) are determined. In step 2, the lifting device (4) is installed on the existing building structure column (3), including the following steps: Installing a lifting device (4) on the inner side of an existing building structure column (3) at an edge position; A lifting device (4) is installed on each side of the existing building structure column (3) at the middle position; Connect all lifting devices (4) to the control system, In step 3, the first steel structure truss (1) and the second steel structure truss (2) are assembled separately, including the following steps: Assembling the first steel structure truss (1) at a first assembly position, wherein the first assembly position is the first constructed floor directly below the installation position of the first steel structure truss (1); Assembling the second steel structure truss (2) at the second assembly position, wherein the second assembly position is the first constructed floor directly below the installation position of the second steel structure truss (2), The first assembly position is lower than the second assembly position, In step 4, the first steel structure truss (1) and the second steel structure truss (2) are lifted to the same height, which includes the following steps: The control system controls a lifting device (4) connected to the first steel structure truss (1) to lift the first steel structure truss (1), and the lifting height matches the height difference between the first assembly position and the second assembly position.

2. The method for constructing a large-span steel structure truss in a limited space as claimed in claim 1, characterized in that: The large-span steel structure truss comprises: a first steel structure truss (1), a second steel structure truss (2) and a patching rod assembly (5); The number of the second steel structure trusses (2) is two, and the two second steel structure trusses (2) are respectively installed at both ends of the first steel structure truss (1), and the first steel structure truss (1) and the second steel structure truss (2) are both connected to the patching rod assembly (5); The number and position of the patching rod assemblies (5) match the number and position of the existing building structure columns (3).

3. The method for constructing a large-span steel structure truss in a limited space according to any one of claims 1 to 2, characterized in that: The lifting device (4) comprises: a sling (41), a first fixing frame (42) and a second fixing frame (43); Wherein, the sling (41) is fixedly mounted on the first fixing frame (42); The first fixing frame (42) is installed on an existing building structure column (3) via the second fixing frame (43); The sling (41) is connected to the first steel structure truss (1) or the second steel structure truss (2).

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