Large-span truss and construction method

Abstract

The invention discloses a large-span truss and a construction method, the large-span truss comprises a plurality of frame columns, a plurality of inter-column frame beams, a truss chord member group and a plurality of jig frames, the plurality of frame columns are connected through the inter-column frame beams to form a frame column group, the truss chord member group is assembled between the frame column groups, and the jig frames are assembled on the truss chord member group. The jig frame and the truss chord member set are movably assembled together and used for supporting the truss chord member set, and the construction method is used for construction of the large-span truss. According to the large-span truss and the construction method, the large-span use scene can be supported, the construction efficiency is high, the municipal road occupation time can be effectively controlled, and the structural stability and safety are high.

Description

Technical Field

[0001] The present invention relates to the technical field of trusses, and in particular to a large-span truss and a construction method thereof. Background Art

[0002] With the rapid development of cities and the increasing shortage of land resources, building corridors above municipal roads can effectively connect commercial complexes on both sides and improve space utilization. Currently, existing trusses cannot support large-span applications. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a large-span truss and a construction method that can support large-span usage scenarios, has high construction efficiency, can effectively control the occupation time of municipal roads, and has high structural stability and safety.

[0004] The present invention provides a large-span truss, comprising a plurality of frame columns, a plurality of inter-column frame beams, a truss chord group and a plurality of tire frames, wherein the plurality of frame columns are connected by the inter-column frame beams to form a frame column group, the truss chord group is assembled between the frame column groups, and the tire frames are movably assembled with the truss chord group to support the truss chord group.

[0005] In one embodiment, the truss chord group includes a truss upper chord, a truss middle chord and a truss lower chord, the heights of the truss upper chord, the truss middle chord and the truss lower chord are different, the truss upper chord, the truss middle chord and the truss lower chord are connected to the frame column, and the truss lower chord is assembled together with the tire frame.

[0006] In one embodiment, the truss chord group further includes a plurality of inter-truss connecting beams, and the truss upper chord, the truss middle chord and the truss lower chord are respectively connected by corresponding inter-truss connecting beams.

[0007] In one embodiment, the truss chord group further includes a first web member and a second web member, wherein the first web member vertically connects the truss upper chord, the truss middle chord and the truss lower chord, and the second web member obliquely connects the truss upper chord, the truss middle chord and the truss lower chord.

[0008] In one embodiment, the tire frame includes a tire frame standard section and a tire frame conversion section, and the tire frame standard section is connected to the truss chord group through the tire frame conversion section.

[0009] In one embodiment, the tire frame conversion section includes an adjustment section, a conversion beam and an adjustment section. The adjustment section is connected to the adjustment section through the conversion beam. The adjustment section is assembled on the tire frame standard section. The adjustment section is connected and fixed to the truss chord group.

[0010] In an embodiment, the frame columns include an underground frame column section and a plurality of aboveground frame column sections, the plurality of aboveground frame column sections are connected to each other to form an aboveground frame column part, the aboveground frame column part is connected to the underground frame column section, the column-to-column frame beams connect adjacent aboveground frame column sections, and the truss chord assembly is assembled on the aboveground frame column section.

[0011] The application further provides a large-span truss construction method, which is used for the construction of the large-span truss and includes the following steps:

[0012] A plurality of frame columns are installed, and the bottom of the frame columns is poured with concrete to connect the plurality of frame columns through column-to-column frame beams to form a stable frame system;

[0013] A cradle is arranged between the frame columns according to finite element analysis;

[0014] The truss chord assembly is assembled, and the truss chord assembly is cambered according to design requirements and finite element analysis;

[0015] The truss chord assembly is hoisted to a preset position, and the truss chord assembly is connected and fixed to the frame system and the cradle;

[0016] A floor slab is laid on the truss chord assembly.

[0017] In an embodiment, the truss chord assembly is assembled, and the truss chord assembly is cambered according to design requirements and finite element analysis, which further includes:

[0018] The truss lower chords are cambered according to design requirements and finite element analysis, and are hoisted after acceptance;

[0019] The truss lower chords are welded with the help of the cradle, and the column-to-column connecting beams in the 1 / 3-span region are installed between adjacent truss lower chords;

[0020] The first web members are installed, the truss middle chords are cambered according to design requirements and finite element analysis after the welding of the first web members and the truss lower chords is completed, and are hoisted after acceptance;

[0021] The two truss middle chords are installed and welded to the aboveground frame column sections and the first web members, and the column-to-column connecting beams in the 1 / 3-span region are installed to control out-of-plane stability, and the second web members are installed between the truss lower chords and the truss middle chords 202;

[0022] The truss upper chords are cambered according to design requirements and finite element analysis after the welding of the second web members and the truss middle chords is completed, are hoisted after acceptance, are welded to the aboveground frame column sections and the second web members, and the column-to-column connecting beams in the 1 / 3-span region are installed to control out-of-plane stability.

[0023] The large-span truss and construction method provided by the present invention can support large-span usage scenarios, have high construction efficiency, can effectively control the occupation time of municipal roads, and have high structural stability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a structural diagram of a large-span truss provided in Example 1 of the present invention.

[0026] Figure 2 This is a schematic structural diagram of a frame column of a large-span truss provided in Example 1 of the present invention.

[0027] Figure 3 This is a schematic structural diagram of a standard section of a large-span truss frame provided in Example 1 of the present invention.

[0028] Figure 4 This is a schematic structural diagram of a frame conversion section of a large-span truss provided in Example 1 of the present invention.

[0029] Figure 5 This is a schematic diagram of hoisting the lower chord of the truss in the large-span truss construction method provided in Example 2 of the present invention.

[0030] Figure 6 This is a schematic diagram of assembling the lower chord of the truss in the large-span truss construction method provided in Example 2 of the present invention. DETAILED DESCRIPTION

[0031] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are merely some, and not all, of the embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the description of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0032] In the description of the present invention, unless otherwise specified or limited, the terms "disposed," "installed," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances.

[0033] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0034] The terms "first," "second," "third," etc. are merely used to distinguish between elements of similar nature and do not indicate or imply relative importance or a particular order.

[0035] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0036] Example 1

[0037] See also Figure 1 The large-span truss provided by the present invention includes a plurality of frame columns 1, a plurality of inter-column frame beams 4, a truss chord group 2 and a plurality of tire frames 3. The plurality of frame columns 1 are connected by the inter-column frame beams 4 to form a frame column group. The truss chord group 2 is assembled between the frame column groups. The tire frames 3 are movably assembled with the truss chord group 2 to support the truss chord group 2.

[0038] It can be understood that the frame columns 1 can be a group of four, and adjacent frame columns 1 can be connected by inter-column frame beams 4 to form a frame column group. The frame column group can be buried in the ground and poured with concrete. The truss chord group 2 can be assembled between two frame column groups, and several tires 3 are located between the two frame column groups. The tires 3 can also be buried in the ground in the above manner. Floor decking can be laid on the truss chord group 2 to form a steel corridor.

[0039] See also Figure 1 In some embodiments, the truss chord group 2 includes a truss upper chord 203, a truss middle chord 202 and a truss lower chord 201. The heights of the truss upper chord 203, the truss middle chord 202 and the truss lower chord 201 are different. The truss upper chord 203, the truss middle chord 202 and the truss lower chord 201 are connected to the frame column 1, and the truss lower chord 201 is assembled together with the tire frame 3.

[0040] It can be understood that the truss upper chord 203 is located above the truss middle chord 202, and the truss middle chord 202 is located above the truss lower chord 201. The spacing between the truss upper chord 203 and the truss middle chord 202 is the same as the spacing between the truss middle chord 202 and the truss lower chord 201. The two ends of the truss upper chord 203, the truss middle chord 202 and the truss lower chord 201 are respectively assembled on the frame column group, and the tire frame 3 supports the truss lower chord 203. The truss chord group 2 of this structure has good overall stability.

[0041] Please continue reading Figure 2 In some embodiments, the truss chord group 2 further includes a plurality of inter-truss connecting beams 206 , and the truss upper chord 203 , the truss middle chord 202 and the truss lower chord 201 are respectively connected by corresponding inter-truss connecting beams 206 .

[0042] It can be seen that adjacent truss upper chords 203 are connected by corresponding inter-truss connecting beams 206, adjacent truss middle chords 202 are connected by corresponding inter-truss connecting beams 206, and similarly, adjacent truss lower chords 201 are also connected by corresponding inter-truss connecting beams 206. The overall stability of the truss chord group 2 of this structure is good.

[0043] See also Figure 1 In some embodiments, the truss chord group 2 further includes a first web member 205 and a second web member 204, the first web member 205 vertically connecting the truss middle chord 202 and the truss lower chord 201, and the second web member 204 obliquely connecting the truss upper chord 203 and the truss middle chord.

[0044] It can be understood that the tire frame 3 can be located directly below the first web member 205, and an inclined web member 207 can also be set. The inclined web member 207 is obliquely connected to the frame truss upper chord 203, the truss middle chord 202 and the truss lower chord 201. The truss chord group 2 of this structure has good overall stability.

[0045] See also Figure 1 and, Figure 3 and Figure 4 In some embodiments, the tire frame 3 includes a tire frame standard section 302 and a tire frame conversion section 301 , and the tire frame standard section 302 is connected to the truss chord group 2 through the tire frame conversion section 301 .

[0046] It can be known that the standard section 302 of the tire frame can include four vertical columns and a base plate. The four vertical columns are respectively located at the four corners of the rectangle. The four vertical columns are connected to the base plate. The four adjacent vertical columns are connected by diagonal struts. The diagonal struts can also be staggered. The vertical columns are connected and fixed to the tire frame conversion section 302, thereby well supporting and fixing the truss chord group 2.

[0047] Please refer to Figure 4In some embodiments, the tire frame conversion section 301 includes an adjustment section 301a, a conversion beam 301b and an adjustment section 301c. The adjustment section 301a is connected to the adjustment section 301c through the conversion beam 301b. The adjustment section 301a is assembled on the tire frame standard section 302, and the adjustment section 301c is connected and fixed to the truss chord group 2.

[0048] It can be known that the adjustment section 301a is assembled on the vertical pole column, and the height of the adjustment section 301c can be selected according to actual needs. The adjustment section 301c can be connected and fixed to the truss lower chord 201 to support the truss chord group 2. The structure of the tire frame conversion section 301 is simple.

[0049] See also Figure 2 In some embodiments, the frame column 1 includes an underground frame column segment 101 and several above-ground frame column segments 102. The several above-ground frame column segments 102 are interconnected to form an above-ground frame column portion. The above-ground frame column portion is connected to the underground frame column segment 101. The inter-column frame beam 4 connects adjacent above-ground frame column segments 102. The truss chord group 2 is assembled on the above-ground frame column segment 102.

[0050] It can be known that the underground frame column section 101 can be conical and can be buried below the ground. The above-ground frame column section 102 is located above the ground. The number of above-ground frame column sections 102 can be two. The two above-ground frame column sections 102 are connected, and one of the above-ground frame column sections 102 is connected and fixed to the lower frame column section 101. The frame column 1 of this structure is convenient for inserting into the ground, and the truss upper chord 203, the truss middle chord 202 and the truss lower chord 201 of the truss chord group 2 are connected to the above-ground frame column 102 part.

[0051] Example 2

[0052] See also Figure 5 and Figure 6 This embodiment provides a large-span truss construction method for the above-mentioned large-span truss construction, comprising the following steps:

[0053] Several frame columns 1 are installed, and concrete is poured on the bottom of the frame columns 1. After the concrete is poured, several frame columns 1 are connected by inter-column frame beams 4 to form a stable frame system.

[0054] It can be known that after the underground frame column section 101 is installed and the poured concrete strength reaches the required level, the above-ground frame column section 102 is installed and the inter-column frame beams 4 form a stable frame system.

[0055] The tire frame 3 is arranged between the frame columns 1 according to the finite element analysis.

[0056] It can be understood that the tire standard section 302 is arranged according to finite element analysis, and the tire conversion section 301 is arranged on the tire standard section 302 . The tire 3 can be arranged directly below the first web member 205 of the truss chord group 2 .

[0057] The truss chord group 2 is assembled and arched according to the design requirements and finite element analysis.

[0058] The truss chord group 2 is hoisted to a preset position, and the truss chord group 2 is connected and fixed to the frame system and the tire frame 3.

[0059] It can be known that the truss lower chord 201 produced in three sections is assembled into a whole to form the truss lower chord 201, and the truss lower chord 201 is arched according to design requirements and finite element analysis, and hoisted after passing the acceptance inspection.

[0060] After the two truss lower chords 201 are welded in place, an inter-truss connecting beam 206 with a span of 1 / 3 is installed between adjacent truss lower chords 201 to control out-of-plane stability.

[0061] The first web member 205 is installed to ensure that the truss middle chord 202 has reliable support. After the first web member 205 is welded to the truss lower chord 201, the cradle is arranged and the truss middle chord 202, which is also produced in three sections, is assembled into a whole. The truss middle chord 202 is arched according to the design requirements and finite element analysis. After acceptance, it is hoisted, the two truss middle chords 202 are installed and welded to the ground frame column section 102 and the first web member 205, and the inter-truss connecting beam 206 of the 1 / 3 span area is installed to control the out-of-plane stability.

[0062] The second web member 204 is installed to ensure that the truss upper chord 203 has reliable support. After the second web member 204 is welded to the truss middle chord 202, the assembly cradle is arranged to assemble the truss upper chord 203 produced in three sections into a whole. The truss upper chord 203 is arched according to the design requirements and finite element analysis, and hoisted after acceptance. The two truss upper chords 203 are installed and welded to the ground frame column section 102 and the second web member 204. The inter-truss connecting beam 206 of the 1 / 3 span area is installed to control the out-of-plane stability. At the same time, the second web member 204 is installed obliquely between the truss upper chord 203 and the truss middle chord 202.

[0063] Lay the floor deck on the truss chord group 2.

[0064] It is understandable that after installing the inter-truss connecting beams 206 in the remaining areas of each floor and laying the floor decking, the tire frame 3 can be removed.

[0065] From the above description, it can be seen that the large-span truss and construction method provided by the present invention can support large-span usage scenarios, have high construction efficiency, can effectively control the occupation time of municipal roads, and have high structural stability and safety.

[0066] The foregoing description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be readily conceived by a person skilled in the art within the technical scope disclosed herein are intended to be encompassed within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A long-span truss, characterized in that: It includes a plurality of frame columns, a plurality of inter-column frame beams, a truss chord group and a plurality of tire frames. The plurality of frame columns are connected by the inter-column frame beams to form a frame column group. The truss chord group is assembled between the frame column groups. The tire frame is movably assembled with the truss chord group to support the truss chord group.

2. The long-span truss according to claim 1, characterized in that: The truss chord group includes a truss upper chord, a truss middle chord and a truss lower chord. The heights of the truss upper chord, the truss middle chord and the truss lower chord are different. The truss upper chord, the truss middle chord and the truss lower chord are connected to the frame column, and the truss lower chord is assembled together with the tire frame.

3. The long-span truss according to claim 2, characterized in that: The truss chord group further includes a plurality of inter-truss connecting beams, and the truss upper chord, the truss middle chord and the truss lower chord are respectively connected by corresponding inter-truss connecting beams.

4. The long-span truss according to claim 2, characterized in that: The truss chord member group further includes a first web member and a second web member, wherein the first web member vertically connects the truss lower chord and the truss middle chord, and the second web member vertically connects the truss middle chord and the truss upper chord.

5. The long-span truss according to claim 1, wherein: The tire frame includes a tire frame standard section and a tire frame conversion section, and the tire frame standard section is connected to the truss chord group through the tire frame conversion section.

6. The long-span truss according to claim 5, characterized in that: The tire frame conversion section includes an adjustment section, a conversion beam and an adjustment section. The adjustment section is connected to the adjustment section through the conversion beam. The adjustment section is assembled on the tire frame standard section. The adjustment section is connected and fixed to the truss chord group.

7. The long-span truss according to claim 1, wherein: The frame column includes an underground frame column segment and several above-ground frame column segments. The several above-ground frame column segments are interconnected to form an above-ground frame column part. The above-ground frame column part is connected to the underground frame column segment. The inter-column frame beam connects adjacent above-ground frame column segments. The truss chord group is assembled on the above-ground frame column segment.

8. A long-span truss construction method, characterized in that: The construction of the long-span truss according to any one of claims 1 to 7 comprises the following steps: Installing a plurality of frame columns and pouring concrete at the bottom of the frame columns to connect the frame columns through inter-column frame beams to form a stable frame system; Arrange the tire frame between the frame columns based on finite element analysis; Assemble the truss chord group and arch the truss chord group according to design requirements and finite element analysis; Hoisting the truss chord group to a preset position, and connecting and fixing the truss chord group to the frame system and the tire frame; A floor deck is laid on the truss chord group.

9. The long-span truss construction method according to claim 8, characterized in that: The assembling of the truss chord group and arching the truss chord group according to design requirements and finite element analysis further includes: According to the design requirements and finite element analysis, the lower chord of the truss is arched and hoisted after passing the acceptance inspection; The truss lower chords are welded with the help of a cradle, and inter-truss connecting beams covering 1 / 3 of the span area are installed between adjacent truss lower chords; Install the first web member. After the first web member is welded to the truss bottom chord, arch the truss middle chord according to the design requirements and finite element analysis. Hoist the truss after passing the acceptance inspection. Install the two truss middle chords and weld them to the above-ground frame column segments and the first web members. Install the inter-truss coupling beams in the 1 / 3 span area to control out-of-plane stability. Install the second web member between the truss bottom chord and the truss middle chord 202. After the second web is welded to the truss middle chord, the truss upper chord is arched according to the design requirements and finite element analysis. After acceptance, it is hoisted and the truss upper chord is welded to the ground frame column section and the second web. The inter-truss connecting beam of the 1 / 3 span area is installed to control the out-of-plane stability.

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