CN213773394U

CN213773394U - Novel assembled rectangular steel tube concrete truss support system

Info

Publication number: CN213773394U
Application number: CN202022758729.9U
Authority: CN
Inventors: 娄卫校; 李雪良; 娄单杰
Original assignee: Shanghai Hengneng Building Modular Technology Co ltd
Current assignee: Shanghai Hengneng Building Modular Technology Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-07-23
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses a novel assembled rectangle steel pipe concrete truss braced system is applicable to the building field. In order to solve the unable reuse of traditional concrete support, the bearing capacity is poor, and the installation, dismantle troublesome, and steel structural support arranges that density is big, is unfavorable for the construction and transports perpendicularly and the great problem of steel pipe support axial deformation ratio, the utility model discloses a each part of truss braced system sets up to the single rectangle steel pipe concrete that does not exceed 5 tons, has realized shortening construction period in the excavation supporting work progress, through having enough to meet the need the use many times, reduce cost improves the resistance to compression bearing capacity, the resistance to shear bearing capacity, the resistance to deformation of support simultaneously.

Description

Novel assembled rectangular steel tube concrete truss support system

Technical Field

The utility model relates to a building field particularly is novel assembled rectangle steel pipe concrete truss braced system.

Background

The traditional support system of the underground structure generally adopts a concrete wale and a support to form a cast-in-place concrete structure or a steel surrounding purlin and a round steel pipe support.

Disadvantages of concrete supports:

1. underground space reinforcing steel bar normal position ligature takes manpower, the cycle length.

2. The concrete can enter the next construction link when the curing strength of the concrete reaches 100%, and the construction waiting time is long.

3. After the construction is completed, the concrete support needs to be dismantled and then needs to be transported out, building waste exists, and time and labor are wasted.

The steel pipe supports the shortcoming:

1. the steel pipe supports are arranged densely, and the spacing is usually 3m, so that the steel pipe supports are not beneficial to mechanical construction and vertical transportation.

2. The axial deformation of the steel pipe support is large, the monitoring is easy to alarm, and the alarm dismounting procedure is complex.

SUMMERY OF THE UTILITY MODEL

The utility model aims at shortening construction period in the excavation supporting construction process, through having enough to meet the need the use many times, reduce cost.

The utility model discloses a concrete technical scheme as follows:

a novel assembly type rectangular steel tube concrete truss support system is used for foundation pit support construction and comprises an upper chord and a lower chord, wherein the upper chord and the lower chord are detachably connected through a vertical web member; the upper chord and the lower chord comprise detachable girls around and supports between the girls, and the supports are detachably connected with the girls on the adjacent edges or the girls on the opposite edges.

The waist beams comprise three-way waist beams and two-way waist beams, the waist beams on the same side are detachably connected through waist beam connectors, and the waist beams on the adjacent sides are detachably connected through corner connectors.

The supports are divided into vertical supports and diagonal supports, the vertical supports are detachably connected with the waist beams on opposite sides, and the diagonal supports are detachably connected with the waist beams on adjacent sides.

The left end and the right end of the three-way waist rail are respectively detachably connected with a two-way waist rail, and the middle end of the three-way waist rail is detachably connected with the vertical support; the bidirectional waist beam is provided with a bracket which is used for being detachably connected with the inclined support.

The waist rail support and bight connecting piece are rectangular steel pipe concrete, and steel pipe concrete is exactly pour into the steel pipe concrete and tamp in order to increase the intensity and the rigidity of steel pipe, make full use of steel and concrete material's strong point, and the steel construction has compensatied concrete material weak and connect inconvenient shortcoming that the anti shear capacity of bearing is weak promptly, and the concrete has compensatied the steel construction and has warp greatly, synthesizes the advantage of two kinds of materials to the resistance to compression bearing capacity, anti shear capacity, the resistance to deformation that realize improving the support. The cross section of the steel pipe is preferably rectangular, and steel pipes with other shapes can be used as required.

Each support comprises two same support rods, and the two same support rods are connected into a whole through a transverse web member.

Splayed inclined struts are arranged between the left end and the right end and the middle end of the three-way waist rail, and the corner connecting piece is in an A shape. This is to enhance the degree of stability of the joint.

Hanging ear plates are arranged on the upper and lower chord waist beams, and the upper and lower chord waist beams are hung on the side wall of the maintenance structure through the hanging ear plates.

The vertical web members are connected with the upper chord and the lower chord through bolt and nut structures; the waist rail is connected with the support through a flange. The waist rail with the junction department of bight connecting piece has the arch, the both ends of waist rail connecting piece have the shape size with protruding recess or the through-hole of gomphosis each other, work as the waist rail with the waist rail or when joining mutually between the bight connecting piece, the both ends of waist rail connecting piece can be simultaneously with the protruding gomphosis mutually at both ends.

The utility model discloses well each part is prefabricated in advance, then transports to the job site equipment, because prefabricated component has all carried out reasonable division, its dead weight is lighter relatively (single component control is within 5 tons), convenient transportation and installation to realize shortening construction period, simultaneously because the component outward appearance is the steel construction, it is convenient to maintain, can manifold cycles use reduce cost.

Has the advantages that: the foundation pit support can be recycled, so that construction waste is reduced, and the cost is reduced; the construction efficiency is improved; the compression bearing capacity, the shearing bearing capacity and the deformation resistance of the support are improved.

Drawings

Fig. 1 is a plan view of a novel fabricated rectangular concrete filled steel tube truss support system.

Fig. 2 is an axonometric view of a novel fabricated rectangular concrete filled steel tube truss support system.

FIG. 3 is an isometric view of the vertical support of the upper and lower chords joined by vertical web members.

FIG. 4 is a vertical support axis perspective view of the upper or lower chord.

Fig. 5 is a schematic view of a three-way wale.

Figure 6 is a schematic view of a corner connector.

Figure 7 is a schematic view of a bi-directional wale.

Fig. 8 and 9 are schematic diagrams of diagonal support.

Figure 10 is a schematic illustration of a wale connector.

Figure 11 is a schematic view of a hanger ear plate.

Fig. 12 is a schematic view of the vertical web member connecting the upper and lower chords.

Figure 13 is a schematic illustration of a wale connector connection.

The three-way waist rail comprises a three-way waist rail 1, a corner connecting piece 2, a two-way waist rail 3, an oblique support 4, a vertical support 5, a waist rail connecting piece 6, a hanging ear plate 7, a bracket 8, a vertical web member 9, a left end 11, a right end 12, a middle end 13, a vertical web member joint 15, a waist rail connecting end 16, a splayed inclined strut 17, a transverse web member 51, a vertical support lower chord 52, a vertical support upper chord 53 and a through hole 61.

Detailed Description

Example 1: as shown in fig. 1-2, the novel assembly type rectangular concrete filled steel tube truss support system is rectangular as a whole, four sides of the novel assembly type rectangular concrete filled steel tube truss support system are waist beams, each waist beam comprises a three-way waist beam 1 and a two-way waist beam 3, the left side and the right side of each three-way waist beam 1 are respectively connected with one two-way waist beam 3, and the other end of each two-way waist beam 3 is connected with a corner connecting piece 2; as shown in fig. 6, the corner connecting piece 2 is 90 degrees and is in an a shape as a whole; as shown in fig. 7, the inner angled connecting member 2 of each bidirectional wale 2 has two brackets 8, and a flange is connected to one side of each bracket 8 for connecting with the diagonal support 4; similarly, the middle end of the three-way wale 1 is also provided with a flange for connecting with the vertical support 5; as shown in fig. 5, splayed diagonal braces 17 are arranged between the left end 11 and the middle end 13, and between the right end 12 and the middle end 13 of the three-way wale 1, and the two splayed diagonal braces 17 are distributed in bilateral symmetry. The splayed inclined strut 17, the A-shaped structure of the corner connecting piece 2 and the inclined strut 4 are all of triangular structures, and the system is integrally stable by means of the stability of the triangles. Both ends of the inclined support 4 and the vertical support 5 are provided with flange joints. As shown in fig. 10 and 13, the wale connecting member 6 is a rectangular metal sheet, two square through holes 61 are respectively formed at two ends of the metal sheet, and correspondingly, the wale connecting ends 16 distributed at two ends of the three-way wale 1, the corner connecting member 2 and the two-way wale 3 are also square protrusions, the size of the protrusion is slightly smaller than that of the through holes 61, and the wale are connected through the structure, and the wale and the corner connecting member 2 are connected through the structure. The above is a single layer structure, two layers of the same structure are connected through a vertical web member 9, the upper layer is called an upper chord, and the lower layer is called a lower chord. As can be seen in fig. 12, the vertical web member 9 is also a rectangular piece of metal, and both ends are connected to the vertical web member joints 15 on the upper chord and the lower chord by means of bolt and nut structures, for example, the vertical support lower chord 52 and the vertical support upper chord 53 in fig. 3 are connected by means of the vertical web member 9, and, as shown in fig. 4, the vertical support lower chord 52 and the vertical support upper chord 53 are both formed by two identical support bars and a transverse web member 51 between the two support bars. As shown in fig. 8-9, the diagonal bracing 4 is divided into two types, one shorter with three transverse web members 51 connected, and the other longer with six transverse web members 51 connected, with the remaining structure of the two types being identical. The hanging ear plate 7 is composed of two parts, one part is an independent component, the shape is shown in figure 11, the hanging ear plate comprises a rectangular plate, the rectangular plate is connected with the side wall of the maintenance structure through bolts and nuts, a convex plate is arranged at the back of the rectangular plate, and a through hole is arranged on the convex plate; the other part is uniformly distributed on the upper surfaces of the upper and lower chord waist beams, a gap is arranged in the middle of the part, the gap can accommodate the raised plate, two ends of the part are respectively provided with a through hole, and the through holes on the raised plate are connected with the through holes on the two ends of the part through bolts and nuts after being superposed. The wale with support and bight connecting piece are rectangular steel pipe concrete.

The mounting steps are as follows

1. And excavating earthwork until the elevation of the crown beam layer is reached, binding reinforcing steel bars, and casting the concrete crown beam in situ.

2. After the crown beam is maintained to a certain strength, a chemical anchor bolt is arranged on the envelope structure and a connecting piece to be connected with the hanging ear plate 7 is installed; and installing a first-layer novel assembly type rectangular steel tube concrete truss support system.

3. And excavating the earthwork, and after the supporting position elevation of the next layer of novel assembly type rectangular steel pipe concrete truss supporting system is reached, arranging a chemical anchor bolt on the enclosure structure and installing a connecting piece to be connected with the hanging ear plate 7.

4. The waist beams at the periphery are connected with the building envelope through the connecting pieces and the hanging ear plates 7, and then the middle support of the waist beam is arranged on the waist beam through the flanges, the vertical web members and other parts 9. Gaps between the waist beams and the enclosure structure are poured through micro-expansion high-strength concrete, and the enclosure structure and the supporting system are ensured to work cooperatively.

5. And repeating the steps of 3-4 in sequence until the last support is completed.

After the foundation pit is excavated, the lower structure is sequentially bound with reinforcing steel bars to pour concrete, the prefabricated concrete-filled steel tube supports are gradually removed according to design requirements, and the removed components can still be continuously used in subsequent projects.

The above disclosure is only for the preferred embodiment of the present invention, but not intended to limit itself, and any changes and modifications made by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. The novel assembly type rectangular concrete filled steel tube truss supporting system is characterized by comprising an upper chord and a lower chord, wherein the upper chord and the lower chord are detachably connected through a vertical web member; the upper chord and the lower chord comprise detachable girls around and supports between the girls, and the supports are detachably connected with the girls on the adjacent edges or the girls on the opposite edges.

2. The novel assembled rectangular concrete filled steel tube truss support system according to claim 1, wherein the wales comprise three-way wales and two-way wales, the wales on the same side are detachably connected with each other through a wale connecting piece, and the wales on the adjacent sides are detachably connected with each other through a corner connecting piece.

3. The novel fabricated rectangular concrete filled steel tube truss support system according to claim 2, wherein the supports are divided into vertical supports detachably connecting the wales on opposite sides and diagonal supports detachably connecting the wales on adjacent sides.

4. The novel assembled rectangular concrete filled steel tube truss support system according to claim 3, wherein the left and right ends of the three-way wale are respectively detachably connected with a two-way wale, and the middle end of the three-way wale is detachably connected with the vertical support; the bidirectional waist beam is provided with a bracket which is used for being detachably connected with the inclined support.

5. The novel fabricated rectangular concrete filled steel tube truss support system according to any one of claims 2-4, wherein the wales, the braces and the corner connectors are rectangular concrete filled steel tubes.

6. The novel fabricated rectangular concrete filled steel tube truss support system according to any one of claims 1-4, wherein each support comprises two identical support rods, and the two identical support rods are connected into a whole through a transverse web member.

7. The novel assembly type rectangular concrete filled steel tube truss supporting system according to claim 2, wherein splayed inclined struts are arranged between the left end and the right end and the middle end of the three-way wale, and the corner connecting piece is in an A shape.

8. The novel fabricated rectangular concrete filled steel tube truss support system according to any one of claims 1-4, wherein the upper and lower chord wales are provided with hanging ear plates, and the upper and lower chord wales are hung on the side wall of the maintenance structure through the hanging ear plates.

9. The novel fabricated rectangular concrete filled steel tube truss support system according to any one of claims 1-4, wherein the vertical web members are connected with the upper chord and the lower chord by a bolt and nut structure; the waist rail is connected with the support through a flange.

10. The novel fabricated rectangular concrete filled steel tube truss support system according to any one of claims 2 to 4, wherein a protrusion is formed at the connecting end of the wale and the corner connector, and a groove or a through hole is formed at both ends of the wale connector, so that both ends of the wale connector can be simultaneously engaged with the protrusions of both ends when the wale and the wale or the corner connector are engaged with each other.