CN217536993U - Horizontal supporting beam for green assembled foundation pit support - Google Patents

Abstract

The utility model provides a horizontal supporting beam for green assembly type foundation pit supporting, which comprises at least two rows of concrete-filled steel tube members which are fixedly connected into a whole horizontally, wherein each row of concrete-filled steel tube members comprises a plurality of concrete-filled steel tube units which are sequentially butted and fixed; the steel tube concrete unit comprises a steel tube body and a concrete filling body poured in the steel tube body; the two ends of the steel pipe body are respectively welded and fixed with flange plates, the peripheral wall is distributed with four T-shaped steel along the circumferential direction in a cross shape, the two ends of the T-shaped steel are respectively flush with the two flange plates and are welded and fixed, the web plate of the T-shaped steel is welded and fixed with the peripheral wall of the steel pipe body, and the wing plates are far away from the peripheral wall of the steel pipe body. The utility model provides a green assembled excavation supporting is with horizontal supporting beam can utilize the web of T shaped steel to promote horizontal supporting beam's bending strength, utilizes the pterygoid lamina of T shaped steel can conveniently carry out nimble equipment to the steel core concrete unit simultaneously, improves the efficiency of construction.

Description

Horizontal supporting beam for green assembly type foundation pit support

Technical Field

The utility model belongs to the technical field of the excavation supporting, concretely relates to green assembled excavation supporting is with horizontal supporting beam.

Background

A foundation pit support is a retaining, reinforcing and protecting measure adopted for the side wall of a foundation pit and the surrounding environment in order to ensure the safety of underground structure construction and the surrounding environment of the foundation pit, along with the vigorous development of the prefabricated building and the great attention to the green low-carbon sustainable development in the building field, and an assembled steel supporting structure gradually becomes a leading form of the foundation pit support by virtue of the advantages of high construction speed, diversified supporting forms, mature calculation theory, detachable reutilization, investment saving and the like.

At present, the prefabricated steel pipe concrete is mostly adopted in green assembled excavation supporting, conventional steel pipe concrete is exactly pour into the concrete into the steel pipe and tamp in order to increase the intensity and the rigidity of steel pipe, for making things convenient for length to utilize, adopt the required length size of standard length festival butt joint formation usually, the tip of standard length festival sets up the ring flange that can connect fast, can satisfy joint strength and fast-assembling demand, but can't satisfy the occasion of strutting the intensity requirement at single steel pipe concrete component, just need set up multirow steel pipe concrete structure side by side and strut, this kind of condition is because can't carry out reliable and fast connection between each row of steel pipe concrete and fix, consequently can't reach the effect of strutting that one adds one and equals two, also be the main factor that restricts strutting efficiency, more be the actual problem that needs to solve at present.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a green assembled excavation supporting is with horizontal supporting beam aims at improving and struts intensity and efficiency of construction.

In order to achieve the above object, the utility model adopts the following technical scheme: the horizontal supporting beam for the green assembly type foundation pit support comprises at least two rows of concrete-filled steel tube members which are horizontally and fixedly connected into a whole, wherein each row of concrete-filled steel tube members comprises a plurality of concrete-filled steel tube units which are sequentially butted and fixed; the steel pipe concrete unit comprises a steel pipe body and a concrete filling body; the two ends of the steel pipe body are respectively fixedly welded with flange plates, four T-shaped steels are distributed on the circumferential wall in a cross shape along the circumferential direction of the steel pipe body, the two ends of the T-shaped steels are respectively flush with and fixedly welded with the two flange plates, a web plate of the T-shaped steel is fixedly welded with the circumferential wall of the steel pipe body, and the wing plates are far away from the circumferential wall of the steel pipe body; the concrete filling body is poured in the steel pipe body, and two ends of the concrete filling body are flush with two ends of the steel pipe body.

In a possible implementation manner, four slots distributed in a cross shape are distributed on the flange plate at intervals along the circumferential direction of the flange plate, and the end parts of the four webs are correspondingly inserted into the corresponding slots and are welded and fixed.

In some embodiments, a plurality of groups of reinforcing supports are distributed at intervals along the axial direction of the peripheral wall of the steel pipe body, each group of reinforcing supports comprises a plurality of first stiffening ribs, one first stiffening rib is arranged between every two adjacent T-shaped steels, and the first stiffening ribs are welded and fixed with the peripheral wall of the steel pipe body and two corresponding webs.

Illustratively, the first stiffening rib and the corresponding two wing plates are respectively abutted and welded and fixed.

For example, at least one second stiffening rib is welded between every two adjacent T-shaped steels on the circumferential wall of the two ends of the steel pipe body, and the second stiffening rib is welded and fixed with the flange.

In a possible implementation manner, the web heights of the upper T-shaped steel and the lower T-shaped steel are greater than the web heights of the left T-shaped steel and the right T-shaped steel.

In some embodiments, a plurality of lifting holes are distributed on the upper web plate and the lower web plate at intervals along the axial direction of the upper web plate and the lower web plate, and a first connecting hole array is arranged on each wing plate.

In some embodiments, the two ends of each wing plate are distributed with a second connecting hole array, and the two ends of each web plate are distributed with a third connecting hole array.

Exemplarily, green assembled horizontal support beam for excavation supporting still includes a plurality of first coupling assembling and a plurality of second coupling assembling, and wherein, first coupling assembling is used for the end connection of two corresponding pterygoid laminas fixed through two sets of second connecting hole arrays, and second coupling assembling is used for the end connection of two corresponding webs fixed through two sets of third connecting hole arrays.

For example, the first connecting assembly comprises a first connecting plate and two second connecting plates, wherein two ends of the first connecting plate are respectively attached to the surfaces, away from the steel pipe body, of the two corresponding wing plates, and two groups of fourth connecting hole arrays corresponding to the two corresponding groups of second connecting hole arrays are arranged on the first connecting plate; the two second connecting plates are respectively positioned at two sides of the corresponding web plate, two ends of the first connecting plate are respectively attached to the plate surfaces of the two adjacent wing plates facing the steel pipe body, and the first connecting plate is provided with a fifth connecting hole array corresponding to the fourth connecting hole array; the second connecting assembly comprises two third connecting plates which are respectively attached to the plate surfaces on the two sides of the end parts of the two corresponding webs, and two groups of sixth connecting hole arrays which respectively correspond to the two corresponding groups of third connecting hole arrays are arranged on the connecting plates.

The utility model provides a green assembled excavation supporting lies in with horizontal supporting beam's beneficial effect: compared with the prior art, the utility model discloses green assembled excavation supporting uses horizontal support beam, the steel core concrete unit can carry out quick butt joint through the ring flange of steel pipe end of body and assemble one row and the steel core concrete component that required size matches, then connect the steel core concrete component of corresponding row number as an organic whole and form horizontal support beam according to strutting the intensity requirement, because the perisporium of steel pipe body is equipped with T shaped steel, consequently only need when connecting between row to lean on the pterygoid lamina of the T shaped steel that the position corresponds each other and fixed connection can, connected mode is simple and convenient, can improve and strut the efficiency of construction, because steel pipe body perisporium becomes cross distribution and has T shaped steel, can utilize the web of T shaped steel to promote the bending strength of steel pipe body itself, and it is fixed to utilize the laminating between the corresponding pterygoid lamina, can reach the effect that one adds one and is greater than two, promote horizontal support beam's whole supporting intensity, the pterygoid lamina that utilizes T shaped steel also is convenient for carrying out nimble assembled connection to multirow steel core concrete component simultaneously, thereby construction efficiency is improved.

Drawings

Fig. 1 is a schematic perspective view of a horizontal support beam for green fabricated foundation pit support according to an embodiment of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic perspective view of a concrete filled steel tube unit according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

fig. 5 is a schematic structural view of a flange plate adopted in the embodiment of the present invention;

fig. 6 is a schematic perspective view of a first connecting plate according to an embodiment of the present invention;

fig. 7 is a schematic perspective view of a second connecting plate according to an embodiment of the present invention;

fig. 8 is a schematic perspective view of a third connecting plate according to an embodiment of the present invention.

In the figure: 10. a concrete filled steel tube unit; 11. a steel pipe body; 111. a flange plate; 1111. a slot; 112. t-shaped steel; 1121. a web; 1122. a wing plate; 113. hoisting holes; 114. a first array of connection holes; 115. a second connection hole array; 116. a third connection hole array; 12. a concrete filler; 13. a first stiffener; 14. a second stiffener; 20. a first connection assembly; 21. a first connecting plate; 211. a fourth array of connection holes; 22. a second connecting plate; 221. a fifth array of connection holes; 30. a second connection assembly; 31. a third connecting plate; 311. and a sixth array of connection holes.

Detailed Description

In order to make the technical problem, technical solution and beneficial effects to be solved by the present invention more clearly understood, the following description is made in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "on" another element, it can be directly on the other element or be indirectly on the other element.

It will be understood that the terms "length," "width," "up-down," "left-right," "front," "back," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 to 4, a horizontal supporting beam for green fabricated foundation pit support according to the present invention will now be described. The horizontal supporting beam for the green assembly type foundation pit supporting comprises at least two rows of concrete-filled steel tube members which are horizontally and fixedly connected into a whole, wherein each row of concrete-filled steel tube members comprises a plurality of concrete-filled steel tube units 10 which are sequentially fixed in a butt joint mode; the steel pipe concrete unit 10 comprises a steel pipe body 11 and a concrete filling body 12; the two ends of the steel pipe body 11 are respectively welded and fixed with flange plates 111, four T-shaped steels 112 are distributed on the circumferential wall in a cross shape along the circumferential direction, the two ends of the T-shaped steels 112 are respectively flush with the two flange plates 111 and are welded and fixed, a web 1121 of the T-shaped steels 112 is welded and fixed with the circumferential wall of the steel pipe body 11, and the wing plates 1122 are far away from the circumferential wall of the steel pipe body 11; the concrete filling body 12 is poured into the steel pipe body 11, and two ends of the concrete filling body are flush with two ends of the steel pipe body 11.

It should be noted that the T-shaped steel 112 is a commonly used section, and the positions of the web 1121 and the wing 1122 of the T-shaped steel 112 are also the same as the meaning understood by the common general knowledge in the art, that is, the position of the edge of the integral structure when the wing 1122 is in use, the web 1121 is the position in the middle of the integral structure, the T-shaped steel 112 made of Q345B is preferably used here, the steel pipe body 11 can be made of a pipe made of Q345B with a diameter of 300mm and a wall thickness of 8mm, the concrete is more than C50, and in addition, high-strength bolts of M27 or M30 of grade 10.9 and more are preferably used when the flange 111 is connected, and the size of the welding leg at each welding position is not less than 10mm.

Compared with the prior art, the horizontal support beam for green fabricated foundation pit support provided by the embodiment can be rapidly assembled into a row of concrete-filled steel tube members matched with a required size by butt joint through the flange 111 at the end part of the steel tube body 11, then the concrete-filled steel tube members in corresponding rows are connected into a whole according to the support strength requirement to form the horizontal support beam, because the circumferential wall of the steel tube body 11 is provided with the T-shaped steel 112, only the wing plates 1122 of the T-shaped steel 112 in corresponding positions are required to be abutted against each other and fixedly connected when the rows are connected, the connection mode is simple and convenient, the support construction efficiency can be improved, the T-shaped steel 112 distributed in a cross shape on the circumferential wall of the steel tube body 11 can be used for improving the bending strength of the steel tube body 11 by using the web 1121 of the T-shaped steel 112, and the effect that one plus one is larger than two can be achieved by using the attaching and fixing among the wing plates 1122, the overall support strength of the horizontal support beam can be improved, and the flexible assembly and connection of multiple rows of the concrete-filled steel tube members can be facilitated by using the wing plates 1122 of the T-shaped steel tube 112, so that the construction efficiency is improved.

In some embodiments, with reference to fig. 3 to 5, four slots 1111 are distributed on the flange 111 at intervals along the circumferential direction thereof, and the ends of the four webs 1121 are respectively inserted into and welded to the corresponding slots 1111. The end parts of the webs 1121 (the step structures can be cut according to the depth of the slots 1111, the depth of the slots 1111 is not less than 50 mm) are inserted into the corresponding slots 1111 and then are welded and fixed, so that the welding reliability between the webs 1121 and the flange 111 can be improved, the risk of weld cracking is reduced, meanwhile, the welding relation between the webs 1121 and the peripheral wall of the steel pipe body 11 is utilized, the steel pipe body 11, the flange 111 and the webs 1121 can be connected into a whole, the comprehensive strength of the steel pipe body 11 can be improved, and the overall supporting strength is further improved.

In this embodiment, in order to improve the connection strength between each T-shaped steel 112 and the steel pipe body 11, referring to fig. 3 and 4, a plurality of sets of reinforcing supports are distributed at intervals along the axial direction of the peripheral wall of the steel pipe body 11, each set of reinforcing supports includes a plurality of first stiffening ribs 13, wherein one first stiffening rib 13 is arranged between every two adjacent T-shaped steels 112, and the first stiffening ribs 13 are welded and fixed to the peripheral wall of the steel pipe body 11 and two corresponding webs 1121. The first stiffening ribs 13 can provide auxiliary welding support positions between the web 1121 and the circumferential wall of the steel pipe body 11, and can also avoid the phenomenon that the web 1121 is distorted and deformed due to too large span, so that the structural strength of the steel pipe body 11 is improved.

Further, in the present embodiment, referring to fig. 4, the first stiffening ribs 13 are abutted against and welded to the respective two flanges 1122, respectively. Utilize the butt of first stiffening rib 13 to support and the welded fastening effect, can form the welding of the perisporium of four first stiffening ribs 13 and four webs 1121 and the steel pipe body 11 that strengthen the support of every group into whole closed loop construction to improve the structural strength of steel pipe body 11, and then promote whole supporting strength.

Specifically, in order to improve the connection strength of the flange 111, referring to fig. 3 and 4, in this embodiment, at least one second stiffening rib 14 is welded between every two adjacent T-shaped steels 112 on the peripheral wall of the two ends of the steel pipe body 11, and the second stiffening rib 14 is welded and fixed to the flange 111. By welding and fixing the second stiffening rib 14 with the flange 111 and the peripheral wall of the steel pipe body 11, the traction and fixation of the outer edge area of the flange 111 can be formed, the phenomenon that the welding seam between the flange 111 and the end part of the steel pipe body 11 is broken due to the concentrated bending moment or torque borne by the outer edge area connected with the flange 111 is avoided, and the connection strength is improved.

It should be noted that, referring to fig. 4, the height of the web 1121 of the two upper and lower T-shaped steels 112 in the present embodiment is greater than the height of the web 1121 of the two left and right T-shaped steels 112. Since the present embodiment is mainly used for horizontal support, the upper and lower webs 1121 have better bending strength reinforcing effect on the steel pipe body 11, so that the higher upper and lower webs 1121 can be used to reinforce the bending strength of the steel pipe body 11, thereby improving the horizontal support strength.

It should be understood that, in some embodiments, for convenience of assembly and improvement of construction efficiency, referring to fig. 3, a plurality of lifting holes 113 are distributed on each of the upper and lower webs 1121 at intervals along the axial direction thereof, and a first connection hole array 114 is disposed on each wing plate 1122. All be equipped with the hole for hoist 113 on two upper and lower webs 1121, can carry out the handling with arbitrary (high) web 1121 mode up to directly adopt the high-strength bolt to penetrate the first connecting hole array 114 on two pterygoid laminas 1122 that paste each other and fix when the handling targets in place, convenient operation is nimble.

In some possible implementations, referring to fig. 1-4, a second connection hole array 115 is distributed at both ends of each wing 1122, and a third connection hole array 116 is distributed at both ends of each web 1121. The second connecting hole array 115 and the third connecting hole array 116 can be used for conveniently connecting and fixing the T-shaped steel 112 which is butted with each other, so that the butting reliability of two adjacent concrete-filled steel tube units 10 is improved by matching with the connection and fixation of the flange plate 111, and the strength of a supporting structure is further improved.

In this embodiment, as shown in fig. 1, the horizontal support beam for green fabricated foundation pit support further includes a plurality of first connection assemblies 20 and a plurality of second connection assemblies 30, wherein the first connection assemblies 20 are used for connecting and fixing the ends of the two corresponding wing plates 1122 through two sets of second connection hole arrays 115, and the second connection assemblies 30 are used for connecting and fixing the ends of the two corresponding web plates 1121 through two sets of third connection hole arrays 116. Two wing plates 1122 in butt joint can be fixedly connected through the first connecting assembly 20 matched with the second connecting hole array 115 by adopting high-strength bolts, two web plates 1121 in butt joint can be fixedly connected through the second connecting assembly 30 matched with the third connecting hole array 116 by adopting high-strength bolts, the connection is simple and reliable, and the improvement of the overall supporting strength and the construction efficiency is facilitated.

Specifically, referring to fig. 1 and 2, and fig. 6 to 8, in the present embodiment, the first connection assembly 20 and the second connection assembly 30 may be selectively configured such that the first connection assembly 20 includes a first connection plate 21 and two second connection plates 22, wherein two ends of the first connection plate 21 are respectively attached to the surfaces of the two corresponding wing plates 1122 facing away from the steel pipe body 11, and two sets of fourth connection hole arrays 211 corresponding to the two corresponding sets of second connection hole arrays 115 are disposed on the first connection plate 21; the two second connecting plates 22 are respectively located at two sides of the corresponding web 1121, two ends of the first connecting plate 21 are respectively attached to the plate surfaces of the two adjacent wing plates 1122 facing the steel pipe body 11, and the first connecting plate 21 is provided with a fifth connecting hole array 221 corresponding to the fourth connecting hole array 211; the second connecting assembly 30 includes two third connecting plates 31 respectively attached to two side plate surfaces of the end portions of the two corresponding webs 1121, and two groups of sixth connecting hole arrays 311 respectively corresponding to the two corresponding groups of third connecting hole arrays 116 are disposed on the connecting plates.

The first connecting plate 21 and the two second connecting plates 22 can be matched to clamp and fix the two butted wing plates 1122 into an integral structure, similarly, the two third connecting plates 31 can be matched to clamp and fix the two butted web plates 1121 into an integral structure, so that the connection strength between the mutually butted concrete-filled steel tube units 10 can be greatly improved, and meanwhile, because the fourth connecting hole array 211 is preset on the first connecting plate 21, the fifth connecting hole array 221 is preset on the second connecting plate 22, and the sixth connecting hole array 311 is preset on the third connecting plate 31, high-strength bolts can be directly penetrated and fixed during assembly, the connection is convenient and efficient, and the construction efficiency can be improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims (10)

1. The horizontal supporting beam for the green assembly type foundation pit support is characterized by comprising at least two rows of concrete-filled steel tube members which are fixedly connected into a whole, wherein each row of concrete-filled steel tube members comprises a plurality of concrete-filled steel tube units which are sequentially butted and fixed;

wherein the concrete filled steel tube unit comprises:

the two ends of the steel pipe body are respectively welded and fixed with flange plates, four T-shaped steels are distributed on the circumferential wall in a cross shape along the circumferential direction of the steel pipe body, the two ends of the T-shaped steels are respectively flush with and welded and fixed with the two flange plates, a web plate of the T-shaped steel is welded and fixed with the circumferential wall of the steel pipe body, and the wing plates are far away from the circumferential wall of the steel pipe body;

and the concrete filling body is poured in the steel pipe body, and two ends of the concrete filling body are flush with two ends of the steel pipe body.

2. The horizontal support beam for green fabricated foundation pit support of claim 1, wherein four slots distributed in a cross shape are distributed on the flange plate at intervals along the circumferential direction thereof, and the end parts of the four webs are respectively inserted and welded with the corresponding slots.

3. The horizontal support beam for green fabricated foundation pit support of claim 1, wherein the peripheral wall of the steel pipe body is distributed with a plurality of groups of reinforcing supports at intervals along the axial direction thereof, each group of reinforcing supports comprises a plurality of first stiffening ribs, wherein one first stiffening rib is arranged between every two adjacent T-shaped steels, and the first stiffening ribs are welded and fixed with the peripheral wall of the steel pipe body and two corresponding webs.

4. The horizontal support beam for green fabricated foundation pit support according to claim 3, wherein the first reinforcing rib abuts against and is welded to the corresponding two flanges.

5. The horizontal support beam for green fabricated foundation pit support according to claim 1, wherein at least one second stiffening rib is welded to the circumferential wall of each two ends of the steel pipe body between every two adjacent T-shaped steels, and the second stiffening rib is welded to the flange.

6. The horizontal support beam for green fabricated foundation pit support of claim 1, wherein the height of the web of the upper and lower T-sections is greater than the height of the web of the left and right T-sections.

7. The horizontal support beam for green fabricated foundation pit support of claim 6, wherein a plurality of hoisting holes are distributed on the upper and lower web plates at intervals along the axial direction of the web plates, and each wing plate is provided with a first connection hole array.

8. The horizontal support beam for green fabricated foundation pit support according to any one of claims 1 to 7, wherein a second connection hole array is distributed at both ends of each wing plate, and a third connection hole array is distributed at both ends of each web plate.

9. The green fabricated foundation pit supporting horizontal support beam of claim 8, further comprising a plurality of first connection members and a plurality of second connection members, wherein the first connection members are used for connecting and fixing the end portions of the two corresponding wing plates through two sets of the second connection hole arrays, and the second connection members are used for connecting and fixing the end portions of the two corresponding web plates through two sets of the third connection hole arrays.

10. The green-fabricated horizontal support beam for foundation pit support of claim 9, wherein the first connection assembly comprises:

two ends of the first connecting plate are respectively attached to the plate surfaces of the two corresponding wing plates departing from the steel pipe body, and two groups of fourth connecting hole arrays corresponding to the two corresponding groups of second connecting hole arrays are arranged on the first connecting plate;

the two second connecting plates are respectively positioned on two sides of the corresponding web plate, two ends of the first connecting plate are respectively attached to the surfaces, facing the steel pipe body, of the two adjacent wing plates, and a fifth connecting hole array corresponding to the fourth connecting hole array is arranged on the first connecting plate;

the second connecting assembly comprises two third connecting plates which are respectively attached to two side plate surfaces of the end parts of the corresponding two webs, and two groups of sixth connecting hole arrays which respectively correspond to the corresponding two groups of third connecting hole arrays are arranged on the connecting plates.

Images