Method for installing large-span truss in limited space

Abstract

The invention provides a method for installing a large-span truss in a limited space, which comprises the following steps of: S110, analyzing a to-be-installed truss structure, and determining an inflection point of the to-be-installed truss; s120, segmenting the truss structure to be mounted based on the inflection points so as to divide the truss structure to be mounted into at least three truss sections to be mounted; s130, based on the segmented to-be-installed truss structure, a structure column system is installed on the construction site, and a jig frame system is built; and S140, a to-be-installed truss structure is installed based on the structure column system and the jig frame system. According to the installation method of the large-span truss in the limited space, the problems that in the prior art, the installation efficiency of a truss structure in the limited space is low, and the installation safety coefficient is low can be solved.

Description

Technical Field

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

[0002] The urban construction environment is complex and diverse, and large-span buildings emerge in an endless stream. Truss structure is an excellent building structure form that has emerged as the construction industry has continued to develop. With the continuous development of the modern construction industry, steel trusses with increasingly larger spans and heights have been widely used in factories, exhibition halls and other construction fields. However, large-span trusses are basically shipped in pieces when they leave the factory because their own length and height basically exceed the limitations of overall transportation. They are basically shipped in pieces when they leave the factory and then assembled and installed after being transported to the construction site.

[0003] However, for places with limited space on the construction site, completing the installation of the truss is often a difficult problem. At present, there are several methods that can complete the assembly of high-altitude truss structures: one is the overall jacking method and the hydraulic lifting method. The disadvantage is that the error deformation is difficult to control. When the weight of the structure is very large, it requires a very high bearing capacity of the lower part. When the site is limited, its complex tooling makes the site more cramped; the second is the high-altitude sliding method. This method will occupy the vertical transportation machinery for a long time, the sliding is difficult, and the construction speed is slow; the third is the high-altitude bulk method. This method pays great attention to the installation sequence and is more dangerous.

[0004] Based on the above technical problems, there is an urgent need for an assembly solution for a truss structure with high safety factor and high construction efficiency. Summary of the invention

[0005] In view of the above problems, an object of the present invention is to provide a method for installing a large-span truss in a limited space, so as to solve the problems of low installation efficiency and low installation safety factor of the truss structure in a limited space in the prior art.

[0006] The method for installing a large-span truss in a limited space provided by the present invention comprises:

[0007] S110: Analyze the truss structure to be installed and determine the inflection point of the truss to be installed;

[0008] S120: Segmenting the truss structure to be installed based on the inflection point to divide the truss structure to be installed into at least three truss segments to be installed;

[0009] S130: installing a structural column system and building a cradle system at the construction site based on the segmented truss structure to be installed;

[0010] S140: Installing the truss structure to be installed based on the structural column system and the tire frame system.

[0011] In addition, a preferred solution is that the structural column system includes at least three groups of structural columns; and the installation of the structural column system at the construction site based on the segmented truss structure to be installed includes:

[0012] Installing each group of structural column groups at each first preset position of the construction site based on the segmented truss structure to be installed;

[0013] Install horizontal column head braces at the column heads of each group of structural columns.

[0014] In addition, a preferred solution is that each group of structural pillars includes at least two structural pillar monomers; and

[0015] The step of installing column head horizontal braces at the column heads of each group of structural column groups comprises:

[0016] The column heads of the grouped structural column monomers are connected by the column head horizontal brace.

[0017] In addition, a preferred solution is that the tire frame system includes at least two tire frame groups; and the construction of the tire frame system on the construction site based on the segmented truss structure to be installed includes:

[0018] Based on the segmented truss structure to be installed, corresponding sets of cradles are built at second preset positions of the construction site;

[0019] Install tire frame diagonal braces on each tire frame group;

[0020] Install adjustment joints on the top of each tire frame group.

[0021] In addition, a preferred solution is that the steps of building corresponding sets of truss frames at respective second preset positions of the construction site based on the segmented truss structures to be installed include:

[0022] Arranging respective cradle bases at respective second preset positions of the construction site based on the segmented truss structure to be installed;

[0023] Each tire frame group is installed on each tire frame base.

[0024] In addition, a preferred solution is that each tire frame group includes at least two tire frame units; and

[0025] The step of installing the tire frame diagonal braces on each tire frame group comprises:

[0026] The tire frame units in the group are connected with each other through the tire frame diagonal brace.

[0027] In addition, a preferred solution is that the truss segment to be installed is divided into a truss segment at the end side and a second truss segment at the inner side, and the structural column group is divided into a first structural column group at the end side and a second structural column group at the inner side; wherein the end of the first truss segment corresponds to the first structural column group, and the second truss segment is located above the second structural column group; and,

[0028] The installation of the truss structure to be installed based on the structural column system and the tire frame system includes:

[0029] Installing the second truss segment based on the second structural column group;

[0030] The section of truss segments is installed based on the first structural column group.

[0031] In addition, a preferred solution is that each set of tire frame groups is respectively arranged between two adjacent sets of structural column groups; and the step of installing the truss segment based on the first set of structural columns includes:

[0032] The truss section is installed by the corresponding tire frame group in cooperation with the first structural column group; wherein,

[0033] The end of one section of the truss segment is connected to the first structural column group, and the middle of one section of the truss segment is connected to the top of the tire frame group.

[0034] In addition, a preferred solution is that the installation of the two truss segments based on the second structural column group and the installation of the one truss segment based on the first structural column group both include:

[0035] Each truss segment to be installed is connected to the corresponding structural column group or tire frame group through the truss diagonal brace.

[0036] In addition, a preferred solution is that during the process of installing each truss segment to be installed, each truss segment to be installed is lifted to a preset height by a crane.

[0037] Compared with the prior art, the method for installing a large-span truss in a limited space provided by the present invention can significantly improve the installation efficiency and safety of a large-span truss in a limited space by first determining the inflection point of the truss to be installed, then segmenting the truss structure to be installed based on the inflection point, and finally segmentally installing each truss segment to be installed based on the structural column group and the frame group.

[0038] In order to achieve the above and related purposes, one or more aspects of the present invention include features that will be described in detail later and are particularly pointed out in the claims. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all of these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] By referring to the following description and claims in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more apparent and easier to understand. In the accompanying drawings:

[0040] Figure 1 It is a schematic diagram of a section of a large-span truss in a limited space provided by an embodiment of the present invention;

[0041] Figure 2 It is a schematic diagram of the method for installing a large-span truss in a limited space provided by an embodiment of the present invention when installing each structural column group and each tire frame group;

[0042] Figure 3 is a schematic diagram of a method for installing a large-span truss in a limited space provided by an embodiment of the present invention when installing two truss sections;

[0043] Figure 4 is a schematic diagram of a method for installing a large-span truss in a limited space provided by an embodiment of the present invention when installing a truss segment;

[0044] Figure 5 It is a flow chart of a method for installing a large-span truss in a limited space provided by an embodiment of the present invention.

[0045] In the figure, there are structural columns 1, a section of truss 2, an inflection point 3, a tire frame 4, a tire frame diagonal brace 5, an adjustment section 6, a truss diagonal brace 7, a column head horizontal brace 8, a crane 9, a tire frame base 10, and a second section of truss 11.

[0046] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0047] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details. In other examples, for ease of describing one or more embodiments, known structures and devices are shown in the form of block diagrams.

[0048] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. 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 circumstances.

[0049] Figure 1 The embodiment of the present invention shows the segmentation method of the large-span truss in the limited space. Figure 2 The structure of the method for installing a large-span truss in a limited space provided by an embodiment of the present invention when installing each structural column group and each tire frame group is shown. Figure 3 The structure of the method for installing a large-span truss in a limited space provided by an embodiment of the present invention when installing two truss sections is shown. Figure 4 The structure of the method for installing a large-span truss in a limited space provided by an embodiment of the present invention when installing a truss segment is shown. Figure 5 The flowchart of the method for installing a large-span truss in a limited space provided by an embodiment of the present invention is shown.

[0050] Combination Figures 1 to 5 It can be seen that the installation method of the large-span truss in a limited space provided by the present invention includes:

[0051] S110: Using professional design software, a detailed analysis is performed on the truss structure to be installed to determine the positions of the inflection points 3 of the truss to be installed;

[0052] S120: Segmenting the truss structure to be installed based on each inflection point 3, so as to divide the truss structure to be installed into at least three truss sections to be installed; wherein, in the segmentation process, it is ensured that each truss section (each truss section to be installed) can work together when subjected to force, thereby improving the stability and safety of the overall structure; Figure 1 As shown, the segmentation point positions and connection point positions of each segment as well as the position of the inflection point 3 are clearly marked;

[0053] S130: installing a structural column system and building a cradle system at the construction site based on the segmented truss structure to be installed;

[0054] S140: Installing the truss structure to be installed based on the structural column system and the tire frame system.

[0055] It should be noted that, for the inflection point 3, due to limited space, when this type of large-span truss is divided into sections between two columns, considering factors such as excessive length and complex site, the expansion rod and the swing rod cannot be smoothly carried out when the crane 9 hoists the components, and the truss length needs to be appropriately reduced. According to structural mechanics, the continuous truss will have a negative bending moment area at the column head. After the truss is disconnected from this point, the bending moment it is subjected to is the smallest, which can minimize the adverse effects of splicing large-span trusses. In addition, the design arch value and the deflection caused by the deadweight of the structure should be considered at the inflection point 3, or the arch value should be determined by calculation for reference for subsequent construction.

[0056] Specifically, for the structural column system, the structural column system includes a plurality of structural column groups (at least three structural column groups); and the step of installing the structural column system on the construction site based on the segmented truss structure to be installed includes:

[0057] Install each group of structural column groups at each first preset position of the construction site based on the segmented truss structure to be installed, ensuring that the structural column monomers in each group of structural column groups (corresponding to the structural column 1 in the attached figure) are vertical and accurately positioned;

[0058] A column head horizontal support 8 is installed at the column head of each group of structural column groups to strengthen the connection between each structural column monomer in each group of structural column groups so that they can bear force in coordination; Figure 2 As shown, it is ensured that the installation of the structural column monomer and the column head horizontal support 8 meets the design requirements, and provides stable support for the installation of subsequent truss sections to be installed.

[0059] Furthermore, each group of structural columns includes a plurality of columns (at least 2, Figure 2 3) structural column monomers (corresponding to Figure 2 and the installation of a column head horizontal support 8 at the column head of each group of structural column groups includes: connecting the column heads of each structural column monomer in the group through the column head horizontal support 8 to strengthen the connection between each structural column monomer in each group of structural column groups so that they can cooperate in force.

[0060] It should be noted that the structural columns, the first truss section and the second truss section are components of the entire truss structure, which have a large span, heavy weight and limited installation space. It is necessary to determine a reasonable installation sequence to ensure the smooth installation of the structure; and, during the installation of the structure, it is necessary to consider the arrival and stacking of the truss components.

[0061] Specifically, the tire frame system includes at least two tire frame groups; and the tire frame system is constructed on the construction site based on the segmented truss structure to be installed, including:

[0062] Based on the segmented truss structure to be installed, corresponding groups of tire frames are built at each second preset position of the construction site, and each tire frame monomer (corresponding to Figure 2 The position and height of the tire frame 4) are accurate;

[0063] A tire frame diagonal brace 5 is installed on each tire frame group to enhance the stability of each tire frame group;

[0064] An adjusting section 6 is installed on the top of each tire frame group so as to adjust the height and position of each tire frame unit in subsequent construction.

[0065] Furthermore, the method of building corresponding sets of truss frames at respective second preset positions of the construction site based on the segmented truss structure to be installed includes:

[0066] Based on the segmented truss structure to be installed, each tire frame base 10 is set at each second preset position of the construction site; each tire frame group is installed on each tire frame base 10. By setting the corresponding tire frame base 10, it can be ensured that each tire frame monomer in each tire frame group can be firmly fixed on the ground.

[0067] Furthermore, each tire frame group includes multiple (at least 2, Figure 2 2) tire frame monomers are shown; and,

[0068] The step of installing the tire frame diagonal braces on each tire frame group includes: connecting each tire frame monomer in the group through the tire frame diagonal braces.

[0069] By setting the above-mentioned tire frame groups, a stable tire frame system can be formed to provide a stable rooting point for the subsequent installation of the second-stage truss.

[0070] It should be noted that when a truss section is installed, a bending moment will inevitably be added to the column head, causing the column head to be "top-heavy" and thus displacement. The truss will have misaligned seams, too large welds at the joints, or too small spacing between nodes, making it difficult to install, adjust, and weld the structure. Therefore, it is necessary to directly add a vertical support system and a lateral support system to the structural column and a truss section to form a stable whole and reduce the impact of displacement at the end of the structural column.

[0071] Specifically, the tire frame, the adjustment section 6, and the tire frame base 10 constitute a vertical support system for a truss section; the tire frame is the main body of the support system. When there is no embedded part fixed under the tire frame, the tire frame set on the tire frame base 10 can ensure the stability of the tire frame. The adjustment section 6 is set above the tire frame to adjust the elevation of the tire frame at the bottom support point of a section of the truss. During installation, it is necessary to be 50mm more than the predetermined elevation to adjust the installation of the truss. The tire frame diagonal brace, the truss diagonal brace 7, the column head horizontal brace 8, the tire frame vertical support system, and the structural column are combined to form the lateral support system of the first truss. A tire frame diagonal brace is set between the two tire frames to ensure that the tire frame system can form a stable unit and constrain the displacement of the tire frame end. After the tire frame forms a stable unit, the truss diagonal brace 7, the tire frame diagonal brace, and the column head horizontal brace 8 form a lateral support system to ensure that the structural column and a section of the truss are accurately installed and positioned and can ensure its wind resistance in the summer typhoon climate.

[0072] It needs to be further explained that the assembly of a truss section, the expansion rod, the swing rod, and the placement of the tire frame when the crane 9 hoisted the components will all affect the installation, so the accuracy of the operation of each part must be ensured.

[0073] In a specific embodiment of the method for installing a large-span truss in a limited space provided by the present invention, the truss segment to be installed can be divided into a truss segment at the end side and two truss segments at the inner side, and the structural column group can be divided into a first structural column group at the end side and a second structural column group at the inner side; wherein the end of the first truss segment corresponds to the first structural column group, and the second truss segment is located above the second structural column group; and,

[0074] The installation of the truss structure to be installed based on the structural column system and the tire frame system includes:

[0075] The second truss segment (i.e. Figure 3 The second truss section 11);

[0076] The truss section (i.e. Figure 4 A section of truss in 2).

[0077] Specifically, installing the second truss segment based on the second structural column group includes: installing the second truss segment on the second structural column group, and ensuring that the position and angle of the second truss segment are accurate; installing the truss diagonal brace 7 on the second truss segment to enhance the lateral stability of the second truss segment; Figure 3 As shown, the two truss sections and the bottom structural column group form a stable unit, ensuring that the newly added components can quickly form a stable structure with the existing structure.

[0078] More specifically, each set of tire frame groups is respectively arranged between two adjacent sets of structural column groups; and the installation of the truss segment based on the first set of structural columns includes:

[0079] The truss section is installed by cooperating with the first structural column group through the corresponding tire frame group; wherein,

[0080] The end of one truss section is connected to the first structural column group, and the middle of one truss section is connected to the top of the tire frame group;

[0081] Accurately connect the first truss section with the second truss section and ensure the connection stability;

[0082] A truss brace 7 is installed on a truss section to enhance the lateral stability of the truss section.

[0083] It should be noted that, in the process of installing a truss segment, it is necessary to ensure that the connection between the first truss segment and the second truss segment meets the design requirements to form a stable connection, thereby completing the installation of the first truss (including the connector between the first truss segment and the second truss segment).

[0084] In addition, it should be noted that the installation of the two truss segments based on the second structural column group and the installation of the one truss segment based on the first structural column group both include:

[0085] Each truss segment to be installed is connected to the corresponding structural column group or tire frame group through the truss diagonal brace 7 to enhance the supporting stability of the first truss segment and the second truss segment.

[0086] It should be noted that after completing the first truss segment and the second truss segment, the installation of the first truss (including the first truss segment and the second truss segment) in the entire large-span truss is completed. For a large-span truss including multiple trusses, repeating the above-mentioned installation process of the first truss can complete the overall installation of the entire large-span truss in a limited space.

[0087] Of course, in the process of installing each truss segment to be installed, it is necessary to lift each truss segment to be installed to a preset height by a crane 9 so as to be installed on the top of the corresponding tire frame or structural column. It should be noted that, when the site is limited, using a suitable crane 9 can reduce the construction difficulty and improve the construction efficiency. It should be noted that.

[0088] It can be seen from the above specific embodiments that the method for installing a large-span truss in a limited space provided by the present invention has at least the following advantages:

[0089] 1. Analyze the truss segmentation points through professional design software, which ensures the stability and safety of the entire structure from a system perspective, and helps avoid structural instability or safety hazards that may occur in traditional construction methods;

[0090] 2. Construction process optimization: Starting from the installation of structural columns and column head horizontal braces, the connection between columns is gradually strengthened to provide stable support for subsequent truss installation. This gradual strengthening method ensures the stability and safety of the construction process.

[0091] 3. Application of the tire frame stabilization system: By ensuring the position and stability of the tire frame, a solid foundation is provided for the installation of the truss. This helps to reduce errors and uncertainties during the construction process and improve construction efficiency and quality.

[0092] 4. Rapid formation of stable units: When installing the first section of trusses and truss braces, it can ensure that the newly added components quickly form a stable unit with the existing structure. This method of quickly forming a stable unit helps to shorten the construction period and improve construction efficiency.

[0093] 5. Reproducibility and applicability: The construction method of this patent is not only applicable to specific large-span truss installation projects, but its principles and technologies can also be extended to the construction of other similar structures. This reproducibility and applicability make this patent have a wider application prospect.

[0094] As above Figures 1 to 5 The installation method of the large-span truss in a limited space according to the present invention is described in an exemplary manner. However, those skilled in the art should understand that various improvements can be made to the installation method of the large-span truss in a limited space proposed by the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the content of the attached claims.

Claims

1. A method for installing a large-span truss in a limited space, characterized in that: The installation method comprises: S110: Analyze the truss structure to be installed and determine the inflection point of the truss to be installed; S120: Segmenting the truss structure to be installed based on the inflection point to divide the truss structure to be installed into at least three truss segments to be installed; S130: installing a structural column system and building a cradle system at the construction site based on the segmented truss structure to be installed; S140: Installing the truss structure to be installed based on the structural column system and the tire frame system.

2. The method for installing a large-span truss in a limited space according to claim 1, characterized in that: The structural column system includes at least three groups of structural column groups; and the installation of the structural column system on the construction site based on the segmented truss structure to be installed includes: Installing each group of structural column groups at each first preset position of the construction site based on the segmented truss structure to be installed; Install horizontal column head braces at the column heads of each group of structural columns.

3. The method for installing a large-span truss in a limited space as claimed in claim 2, characterized in that: Each group of structural columns includes at least two structural column monomers; and The step of installing column head horizontal braces at the column heads of each group of structural column groups comprises: The column heads of the grouped structural column monomers are connected by the column head horizontal brace.

4. The method for installing a large-span truss in a limited space as claimed in claim 3, characterized in that: The tire frame system includes at least two tire frame groups; and the tire frame system is built on the construction site based on the segmented truss structure to be installed, including: Based on the segmented truss structure to be installed, corresponding sets of cradles are built at second preset positions of the construction site; Install tire frame diagonal braces on each tire frame group; Install adjustment joints on the top of each tire frame group.

5. The method for installing a large-span truss in a limited space as claimed in claim 3, characterized in that: The method of building corresponding sets of truss frames at respective second preset positions of the construction site based on the segmented truss structure to be installed comprises: Arranging respective cradle bases at respective second preset positions of the construction site based on the segmented truss structure to be installed; Each tire frame group is installed on each tire frame base.

6. The method for installing a large-span truss in a limited space according to claim 5, characterized in that: Each tire frame group includes at least two tire frame units; and The step of installing the tire frame diagonal braces on each tire frame group comprises: The tire frame units in the group are connected with each other through the tire frame diagonal brace.

7. The method for installing a large-span truss in a limited space according to claim 6, characterized in that: The truss segment to be installed is divided into a truss segment at the end side and a second truss segment at the inner side, and the structural column group is divided into a first structural column group at the end side and a second structural column group at the inner side; wherein the end of the first truss segment corresponds to the first structural column group, and the second truss segment is located above the second structural column group; and, The installation of the truss structure to be installed based on the structural column system and the tire frame system includes: Installing the second truss segment based on the second structural column group; The section of truss segments is installed based on the first structural column group.

8. The method for installing a large-span truss in a limited space according to claim 7, characterized in that: Each set of tire frame groups is respectively arranged between two adjacent sets of structural column groups; and the step of installing the truss segment based on the first set of structural columns includes: The truss section is installed by the corresponding tire frame group in cooperation with the first structural column group; wherein, The end of one section of the truss segment is connected to the first structural column group, and the middle of one section of the truss segment is connected to the top of the tire frame group.

9. The method for installing a large-span truss in a limited space as claimed in claim 8, characterized in that: The step of installing the two truss segments based on the second structural column group, and the step of installing the one truss segment based on the first structural column group both include: Each truss segment to be installed is connected to the corresponding structural column group or tire frame group through the truss diagonal brace.

10. The method for installing a large-span truss in a limited space according to any one of claims 1 to 9, characterized in that: During the process of installing each truss segment to be installed, each truss segment to be installed is lifted to a preset height by a crane.

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