CN218596934U - Low net height large-span bent cap steel truss support system - Google Patents
Low net height large-span bent cap steel truss support system Download PDFInfo
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- CN218596934U CN218596934U CN202222884946.1U CN202222884946U CN218596934U CN 218596934 U CN218596934 U CN 218596934U CN 202222884946 U CN202222884946 U CN 202222884946U CN 218596934 U CN218596934 U CN 218596934U
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- 238000010276 construction Methods 0.000 abstract description 21
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model provides a low-net-height large-span bent cap steel truss support system, a truss support assembly, which comprises a distribution beam assembly and two truss pieces, wherein the two truss pieces are horizontally arranged at intervals, and two ends of the distribution beam assembly are respectively connected with the two truss pieces and used for supporting a bent cap; the first support column assemblies are arranged below the truss support assemblies and are used for supporting the truss support assemblies; the second support column assembly is arranged below the truss support assembly between the two first support column assemblies and used for supporting the truss support assembly, and a travelling crane channel is formed between the second support column assembly and the first support column assembly; the truss support assembly is located above the traffic channel. Compare current support system, the utility model discloses a cross-sectional height of lower chord of truss piece reduces, can practice thrift support system below driving headroom, satisfies the construction of low clean high bent cap.
Description
Technical Field
The utility model relates to a civil engineering technical field especially relates to a low net high large-span bent cap steel truss support system.
Background
With the continuous development of economy and the rapid increase of urban traffic volume, the contradiction between the existing urban roads and the increasing traffic demands is gradually highlighted, the urban road congestion condition is frequent, and the infrastructure construction strength must be increased to relieve the traffic pressure. Because urban roads have short land, the construction of urban infrastructures is gradually turned into the air from the ground to form an urban three-dimensional traffic network, and viaducts gradually become important components of urban traffic. The viaduct construction emphasizes practicability, the structural form mostly adopts a simple beam which is convenient to construct and high in efficiency, the upper structure generally adopts concrete prefabricated parts, the lower structure adopts piers, capping beams, tie beams and the like, wherein the capping beams can support, distribute and transmit upper structure load, and have important influence on the mechanical property of the viaduct, so that the capping beams are very important to select.
The large cantilever bent cap construction support can be mainly divided into two types of floor full space type supports and overhead supports, and the overhead supports are divided into column beam type overhead supports, attached type overhead supports and mixed supports, wherein the attached type overhead supports comprise three types of hoop method supports, pin method supports and bracket method supports. The full-hall type support consists of vertical rods, transverse rods, inclined rods and cross braces, has good integrity, mature construction process and definite technical standard, but is not suitable for construction environments with passing or barriers below the support; the column beam type overhead support comprises a steel column, profile steel, a cross beam and the like, has a clear force transmission path, is suitable for bent cap construction with higher building height and passing requirements, but has higher requirements on a foundation and relatively poorer economy; the three forms of frame bodies of the attached overhead support mainly comprise a steel hoop, a steel pin rod and a steel bracket which are respectively combined with a profile steel component, and have the advantages of high frame body construction speed, low bearing capacity requirement, capability of ensuring travelling crane clearance at a certain height on the ground and the like, but the steel hoop support has high construction difficulty and strict bolt tightening force requirement; the pin rod method support is provided with holes in the pier stud, so that the pier stud is damaged, and the appearance is also influenced to a certain extent; the bracket support method has the advantages of large welding workload, high quality requirement and poor economical efficiency.
Along with the increase of traffic and the development of building materials, the width and the height of the municipal elevated bridge are greatly increased, the size and the bearing capacity of the bent cap are greatly improved, the requirements of the bent cap support are more strict, particularly, the heavy load during the construction of the bent cap is born for the bent cap with low net height and large cantilever, and the traffic requirement below is met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low clean high large-span bent cap steel truss support system to solve the problem that current bent cap construction support can't be applicable to the bent cap construction of the low clean high of the large-span that allows the below vehicle to pass.
The utility model provides a low net high large-span bent cap steel truss support system, include:
the truss support assembly comprises a distribution beam assembly and two truss pieces, the two truss pieces are horizontally arranged at intervals, and two ends of the distribution beam assembly are respectively connected with the two truss pieces and used for supporting the cover beam;
the first support column assemblies are arranged below the truss support assembly and used for supporting the truss support assembly;
the second support column assembly is arranged below the truss support assembly between the two first support column assemblies and used for supporting the truss support assembly, and a travelling crane channel is formed between the second support column assembly and the first support column assembly; the truss support assembly is located above the traffic channel.
In one embodiment, the truss sheet is vertically arranged and comprises an upper chord, a lower chord and web members connecting the upper chord and the lower chord; the distribution beam assembly is connected with the lower chord; the truss support assembly further comprises a truss connecting system, and the truss connecting system is welded with the lower chords of the two truss pieces.
In one embodiment, the distributor beam assembly comprises a plurality of first distributor beams and a plurality of second distributor beams, the plurality of first distributor beams being spaced apart along the length of the lower chord; a plurality of second distribution beams are arranged between the two first distribution beams; the truss support assembly further comprises a first truss inclined strut, the lower end of the first truss inclined strut is connected with the first distribution beam, and the upper end of the first truss inclined strut is connected with the upper chord member.
The first distribution beam and the second distribution beam are welded on the lower chord, so that the transverse stability of the truss support assembly can be ensured, and a working surface is provided for capping beam construction. When the bent cap is constructed, the facility platform plate can be paved on the first distribution beam and the second distribution beam, and constructors can construct the bent cap on the facility platform plate.
In one embodiment, the first support column assembly comprises:
the first cross beam assembly is arranged below the truss support assembly and supports the two truss sheets;
the first longitudinal beam assembly is arranged below the first cross beam assembly;
the first steel upright post assembly is arranged below the first longitudinal beam assembly;
the first foundation is arranged at the lower end of the first steel upright post assembly.
In one embodiment, the first longitudinal beam assembly comprises two parallel first longitudinal beams, one first steel column assembly is arranged below each first longitudinal beam, and the first steel column assembly comprises two first steel columns arranged at intervals along the length direction of the first longitudinal beams; the first support column assembly further comprises a first stand column connecting system and a second stand column connecting system, the first stand column connecting system is connected with two first steel stand columns of the first steel stand column assembly, and the second stand column connecting system is connected with the first steel stand column assembly at the lower end of the two first longitudinal beams.
In one embodiment, the first support column assembly further comprises a first height adjustment member disposed between the first steel stud assembly and the first stringer assembly for adjusting the elevation of the first stringer assembly.
In one embodiment, the second strut assembly comprises:
the second beam assembly comprises a second connecting beam and a second supporting beam, and the second connecting beam is welded with the lower chord; the second supporting cross beam is arranged below the second connecting cross beam;
the second height adjusting piece is arranged between the second connecting cross beam and the second supporting cross beam and used for adjusting the elevation of the second connecting cross beam;
the second steel upright post assembly is arranged at the lower end of the second supporting cross beam;
and the second foundation is arranged at the lower end of the second steel upright post component.
In one embodiment, the second support column assembly further comprises a hoop connector; the second steel upright post assembly is arranged below each truss piece; and the two second steel upright post assemblies below the two truss sheets are connected with the pier posts below the bent cap through the hoop connecting pieces.
In one embodiment, the second support column assembly further comprises a second truss brace, an upper end of the second truss brace being connected to the upper chord, and a lower end of the second truss brace being connected to the second connecting beam.
In one embodiment, the second support column assembly further comprises a third diagonal brace, an upper end of the third diagonal brace being connected with the second support beam, and a lower end of the third diagonal brace being connected with the second steel stud assembly.
The utility model has the advantages that:
the truss supporting assembly is formed by combining the truss sheets and the distribution beam assembly, the structural bearing capacity is large, the splicing characteristic of the truss sheets is utilized, the truss supporting assembly is suitable for bent cap construction of different spans, the investment of frame body turnover materials in infrastructure engineering can be reduced, and the truss supporting assembly is particularly suitable for bent cap construction of large spans.
Set up first support column subassembly through the both ends at truss supporting component, set up second support column subassembly between first support column subassembly to form the driving passageway that is located truss supporting component below, ensure that the bent cap construction does not influence the traffic, satisfy the large-span bent cap construction under the bridge traffic environment.
Utilize the relatively less characteristic of cross section of truss piece, especially compare current support system, the utility model discloses a cross-sectional height of the lower chord of truss piece reduces, can practice thrift the support system below driving headroom, satisfies the construction of low net high bent cap.
Drawings
Fig. 1 is the utility model discloses low net high large-span bent cap steel truss support system's main structure schematic diagram of looking.
Fig. 2 is a schematic top view of the truss support assembly of fig. 1.
Fig. 3 is a side view of the truss support assembly of fig. 1.
Fig. 4 is a side view of the truss support assembly of fig. 1 with a first support column assembly disposed below the truss support assembly.
Figure 5 is a side view of the truss support assembly of figure 1 with a second support column assembly disposed below the truss support assembly.
Figure 6 is a top view of the second support column assembly of figure 5.
In the figure: 1-a distribution beam assembly; 101-a second distribution beam; 102-a first distribution beam; 2-truss sheet; 201-upper chord; 202-web member; 203-lower chord; 3-truss linkage; 401-a first truss brace; 402-a third truss brace; 403-a second truss diagonal; 404-a third diagonal brace; 5-a first stringer assembly; 6-a first beam assembly; 601-a first beam; 602-a second connecting beam; 603-a second supporting beam; 7-a sand box; 801-a first steel stud assembly; 802-a second steel stud assembly; 901-a first column connection; 902-a second column linkage; 1001-steel anchor ear; 1002-anchor ear connecting tie bar; 1101 — a first basis; 1102-second basis.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1, the utility model provides a low net high large-span bent cap steel truss support system. The method comprises the following steps: the truss support assembly comprises a truss support assembly, two first support column assemblies and two second support column assemblies.
The truss support component comprises a distribution beam component 1 and two truss pieces 2, the two truss pieces 2 are horizontally arranged at intervals, and two ends of the distribution beam component 1 are connected with the two truss pieces 2 respectively and used for supporting the cover beam.
The two first support column components are respectively arranged at two ends of the truss support component, and the first support column components are arranged below the truss support component and used for supporting the truss support component.
The two second support column assemblies are arranged below the truss support assembly between the two first support column assemblies and used for supporting the truss support assembly, and a travelling crane channel is formed between the second support column assemblies and the first support column assemblies; the truss support assembly is located above the traffic channel. Taking fig. 1 as an example, a driving channel is formed by one second support column assembly on the left side and one first support column assembly on the left side, and another driving channel is formed by one second support column assembly on the right side and one first support column assembly on the right side. In actual construction, the bent cap is usually located above the road, and the pier stud is arranged below the bent cap, and the two second support column assemblies are connected with the pier stud. In urban roads, the piers under the bent cap are usually placed on the green belt, and the two sides of the green belt are two-way lanes, and the outer side of the two-way lanes (i.e. the side far away from the green belt) is provided with a first support column assembly. Through the support system of this embodiment, when supporting the bent cap, can not influence the vehicle of two-way lane of bent cap below and pass.
Referring to fig. 1 and 2, the truss pieces 2 are vertically arranged, and each truss piece includes an upper chord 201, a lower chord 203, and a web 202 connecting the upper chord 201 and the lower chord 203. The truss sheet 2 is a market finished product. The truss sheet 2 comprises a plurality of sections, each of which can be spliced together. The lengths of the sections are 16m, 5m and 6m, the height is 2.1m, the longest length of the truss sheet 2 is preferably 42m, holes are reserved at the end parts of each section, the sections are connected through bolts, the sections with different lengths are spliced to form the truss sheet 2 with the target length, and the truss sheet is suitable for construction of cover beams with different spans and convenient to turnover after being disassembled.
The distributor beam assembly 1 is connected, bolted or welded to the lower chord 203. The truss support assembly further comprises a truss connecting system 3, the truss connecting system 3 is welded with the lower chords 203 of the two truss pieces 2, and the truss connecting system 3 connects the two truss pieces 2 into an integral structure.
The distribution beam assembly 1 comprises a plurality of first distribution beams 102 and a plurality of second distribution beams 101, wherein the plurality of first distribution beams 102 are distributed at intervals along the length direction of the lower chord 203; between two first distribution beams 102 a number of second distribution beams 101 are arranged; the length of the first distribution beam 102 is longer than the length of the second distribution beam 101. The two ends of the first distribution beam 102 extend beyond the opposite sides of the two truss sheets 2 to form cantilevered ends.
As shown in fig. 3, the truss support assembly further comprises a first truss brace 401, wherein the lower end of the first truss brace 401 is connected to the first distribution girder 102, and the upper end of the first truss brace 401 is connected to the upper chord 201. That is, the first truss brace 401 is provided at the overhanging end of the first distribution beam 102 so as to support and reinforce the truss piece 2.
As shown in fig. 1 and 4, the first support column assembly includes: the first cross beam assembly 6, the first longitudinal beam assembly 5, the first height adjusting piece, the first steel column assembly 801 and the first foundation 1101.
The first beam assembly 6 is arranged below the truss support assembly and supports the two truss sheets 2. For ease of understanding, we will refer to the length direction of the truss work 2 as the longitudinal direction, i.e. the length direction of the capping beam. The width direction of the capping beam is referred to as the transverse direction. Therefore, the first cross member assembly 6 is disposed in the width direction of the head beam. The first girder assembly 6 includes a plurality of horizontal first girders 601 arranged in the width direction of the cap girder. The first beam 601 supports and supports the two truss pieces 2.
The first longitudinal beam assembly 5 is disposed below the first cross beam assembly 6. The first longitudinal beam assembly 5 comprises two parallel first longitudinal beams, each supporting a plurality of first transverse beams 601 of the first transverse beam assembly 6.
A first steel stud assembly 801 is disposed below the first stringer assembly 5. A first steel upright post assembly 801 is arranged below each first longitudinal beam, and each first steel upright post assembly 801 comprises two first steel upright posts arranged at intervals along the length direction of the first longitudinal beam; the first support column assembly further comprises a first column connection system 901 and a second column connection system 902, the first column connection system 901 connects the two first steel columns of the first steel column assembly 801, and the second column connection system 902 connects the first steel column assembly 801 at the lower ends of the two first longitudinal beams.
A first height adjustment is provided between the first steel stud assembly 801 and the first stringer assembly 5 for adjusting the elevation of the first stringer assembly 5. As shown in fig. 1, two first height adjusting members are arranged below each first longitudinal beam, and the two first height adjusting members are located at the upper ends of two first steel columns of the first steel column assembly 801 below the first longitudinal beam. In this embodiment, the first height adjusting member is preferably a sand box 7, and the sand box 7 not only serves to adjust the elevation of the first side rail assembly 5, but also serves to support the same.
Referring to fig. 1 and 4, the truss support assembly further includes a third truss diagonal brace 402, an upper end of the third truss diagonal brace 402 is welded to the upper chord 201, a lower end of the third truss diagonal brace 402 may be welded to the first cross beam 601, or may be welded to a first pad beam disposed on the first cross beam 601, and a length direction of the first pad beam is parallel to a length direction of the first cross beam 601 and is welded to an upper end of the first cross beam 601.
As shown in fig. 5, the second strut assembly includes: second beam assembly, second height adjustment spare, second steel column subassembly 802, staple bolt connecting piece, second basis 1102.
The second beam assembly comprises a second connecting beam 602 and a second supporting beam 603, the second connecting beam 602 is welded with the lower chord 203 and welded on the outer side of the lower chord 203, and the length direction of the second connecting beam 602 is vertical to the length direction of the lower chord 203 and is horizontal; the second supporting beams 603 are disposed at intervals below the second connecting beams 602.
The second height adjusting member is disposed between the second connecting beam 602 and the second supporting beam 603, and is used for adjusting the elevation of the second connecting beam 602; a second pad beam may also be disposed between the second connecting beam 602 and the second supporting beam 603. The second height adjustment member is also preferably a sand box 7. It should be noted that the height of the sand box 7 is adjusted in the building field, which is a relatively conventional application, so the embodiment does not specifically describe how the height of the sand box 7 is adjusted. For example, the sand box 7 is provided with a sand discharge hole, engineering sand in the sand discharge hole is discharged to adjust the clear height or elevation of the upper structure of the sand box, and the support system after the capping beam construction is finished can be conveniently detached.
Claims (10)
1. A low net height large-span bent cap steel truss support system which characterized in that includes:
the truss support assembly comprises a distribution beam assembly and two truss pieces, the two truss pieces are horizontally arranged at intervals, and two ends of the distribution beam assembly are respectively connected with the two truss pieces and used for supporting the cover beam;
the first support column components are arranged at two ends of the truss support component respectively and are used for supporting the truss support component;
the second support column assembly is arranged below the truss support assembly between the two first support column assemblies and used for supporting the truss support assembly, and a travelling crane channel is formed between the second support column assembly and the first support column assembly; the truss support assembly is located above the traffic passage.
2. The system of claim 1, wherein the truss pieces are vertically arranged and comprise an upper chord, a lower chord and web members connecting the upper chord and the lower chord; the distribution beam assembly is connected with the lower chord; the truss support assembly further comprises a truss connecting system, and the truss connecting system is welded with the lower chords of the two truss pieces.
3. The system of claim 2, wherein the distribution beam assembly comprises a plurality of first distribution beams and a plurality of second distribution beams, the plurality of first distribution beams being spaced apart along the length of the lower chord; a plurality of said second distribution beams are arranged between two of said first distribution beams; the truss support assembly further comprises a first truss inclined strut, the lower end of the first truss inclined strut is connected with the first distribution beam, and the upper end of the first truss inclined strut is connected with the upper chord member.
4. The low net height large span capping beam steel truss support system of claim 1 wherein said first support column assembly comprises:
the first cross beam assembly is arranged below the truss support assembly and supports the two truss sheets;
the first longitudinal beam assembly is arranged below the first cross beam assembly;
the first steel upright post assembly is arranged below the first longitudinal beam assembly;
the first foundation is arranged at the lower end of the first steel upright post assembly.
5. The system of claim 4, wherein the first longitudinal beam assembly comprises two parallel first longitudinal beams, one first steel column assembly is arranged below each first longitudinal beam, and the first steel column assembly comprises two first steel columns arranged at intervals along the length direction of the first longitudinal beams; first support column subassembly still includes first stand connected system and second stand connected system, first stand connected system connects two first steel stand of first steel stand subassembly, the first steel stand subassembly of the lower extreme of two first longerons is connected to the second stand connected system.
6. The low net height large span capping steel truss support system of claim 4 wherein the first support column assembly further comprises a first height adjustment disposed between the first steel column assembly and the first stringer assembly for adjusting the elevation of the first stringer assembly.
7. A low net height large span capping beam steel truss support system as defined in claim 2 wherein said second support column assembly comprises:
the second beam assembly comprises a second connecting beam and a second supporting beam, and the second connecting beam is welded with the lower chord; the second supporting cross beam is arranged below the second connecting cross beam;
the second height adjusting piece is arranged between the second connecting cross beam and the second supporting cross beam and used for adjusting the elevation of the second connecting cross beam;
the second steel upright post assembly is arranged at the lower end of the second supporting cross beam;
and the second foundation is arranged at the lower end of the second steel upright post component.
8. The low net height large span capping beam steel truss support system of claim 7 wherein the second support column assembly further comprises hoop connectors; the second steel upright post assembly is arranged below each truss piece; and the two second steel upright post assemblies below the two truss sheets are connected with the pier columns below the bent cap through the hoop connecting piece.
9. The system of claim 7, wherein the second support column assembly further comprises a second diagonal truss, an upper end of the second diagonal truss being connected to the upper chord and a lower end of the second diagonal truss being connected to the second connecting beam.
10. The system of claim 7, wherein the second support column assembly further comprises a third brace, an upper end of the third brace is connected to the second support beam, and a lower end of the third brace is connected to the second steel column assembly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222884946.1U CN218596934U (en) | 2022-10-31 | 2022-10-31 | Low net height large-span bent cap steel truss support system |
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| CN202222884946.1U CN218596934U (en) | 2022-10-31 | 2022-10-31 | Low net height large-span bent cap steel truss support system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116575338A (en) * | 2023-05-09 | 2023-08-11 | 安徽省公路桥梁工程有限公司 | Large cantilever cover beam support system and construction method |
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2022
- 2022-10-31 CN CN202222884946.1U patent/CN218596934U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116575338A (en) * | 2023-05-09 | 2023-08-11 | 安徽省公路桥梁工程有限公司 | Large cantilever cover beam support system and construction method |
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