CN219118173U - Length-adjustable supporting piece - Google Patents
Length-adjustable supporting piece Download PDFInfo
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- CN219118173U CN219118173U CN202223332100.3U CN202223332100U CN219118173U CN 219118173 U CN219118173 U CN 219118173U CN 202223332100 U CN202223332100 U CN 202223332100U CN 219118173 U CN219118173 U CN 219118173U
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- adjustable support
- axial
- length adjustable
- intermediate section
- length
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Abstract
The application provides a length adjustable support for provide holding power to foundation ditch supporting construction, including interlude, stiff end, expansion end. One end of the fixed end is axially connected with the middle section, and the other end of the fixed end is used for applying axial prestress to the supporting structure; the free end includes joint piece and regulating part, and joint piece's one end is connected along the axial with the interlude, and joint piece's the other end is connected with the regulating part that can follow axial flexible, and the free end of regulating part is used for exerting prestressing force to supporting construction along the axial with spacing at the flexible length that sets for to the locating part that is equipped with. The support piece solves the problems of continuity and stability of a large-span foundation pit support system, construction efficiency of the support system and recycling of building materials in the building construction process, can safely support the large-span foundation pit support structure, ensures construction safety, and improves engineering construction speed, economic benefit and environmental benefit through a recyclable modularized structural design.
Description
Technical Field
The application relates to the technical field of building construction, in particular to a length-adjustable support piece.
Background
In recent years, the large-span building structure rapidly develops, and is widely applied to the fields of urban building engineering, subway engineering, underground comprehensive pipe gallery engineering and the like, foundation pit construction is important for the large-span building structure, and the construction safety and the engineering progress are influenced. In actual construction, because the surrounding environment of a construction site is complex, local adjacent areas around the foundation pit often have underground structures, and the supporting mode of the conventional supporting piles and the prestressed anchor cables cannot be used due to the limitation of the site in order to protect the original underground structures, so that the foundation pit needs to be further supported by adopting corresponding supporting structures.
For example, in the construction of large buildings, specific supporting structures are designed by comprehensively considering site conditions, construction period, stratum conditions and the like. Firstly, the foundation ditch span is big, and in the work progress, bearing structure has important influence to foundation ditch stability, support stake displacement deformation, and foundation ditch building envelope's stability is crucial to engineering's construction and surrounding environment safety, consequently, in order to ensure to carry out safe effectual support protection to large-span foundation ditch, need consider the bearing structure's that adopts continuity and overall structure's atress stability. Secondly, the construction and the dismantling of the supporting structure can affect the construction period of the whole engineering, for example, the supporting structure adopting a reinforced concrete mode often needs to be cast in situ and wait for the concrete to harden and then continue to be constructed, and the reinforced concrete structure wastes time and labor when being dismantled, so that the design of related components of the supporting structure is convenient for the on-site installation and the later dismantling as much as possible, and the engineering workload is reduced. Thirdly, under the national 'double carbon' call and the concept of green sustainable development, the design and construction of the supporting structure assembly are from the perspective of recycling, and the reusability of building materials is improved as much as possible, so that the economical use of building raw materials is realized, and the economic benefit and the environmental benefit are improved.
In summary, in order to realize safe and effective support for the large-span foundation pit in the building construction process, the structural scheme optimization is further required for the related components of the supporting system, so that the continuity and stability of the whole structure of the supporting system are improved, and the modularization and functionalization level of the supporting components are improved, so that the construction efficiency and the construction safety of the foundation pit supporting system are ensured.
Disclosure of Invention
In order to solve continuity and stability of a large-span foundation pit supporting system in a building construction process, and construction efficiency and recycling of building materials of the supporting system, the application provides a supporting piece with adjustable length, which can be used for supporting system construction of a large-span foundation pit building envelope, ensures construction safety, and improves engineering construction speed, economic benefit and environmental benefit through a recyclable modularized structural design.
The technical scheme adopted for solving the technical problems is as follows: a length-adjustable support piece is used for providing supporting force for a foundation pit supporting structure and comprises a middle section, a fixed end and a movable end.
One end of the fixed end is axially connected with the middle section, and the other end of the fixed end is used for applying axial prestress to the supporting structure.
The movable end comprises a joint piece and an adjusting piece, one end of the joint piece is axially connected with the middle section, the other end of the joint piece is connected with the adjusting piece which can axially stretch, the movable end is provided with a positioning part to limit the set stretching length, and the free end of the adjusting piece is used for applying prestress to the supporting structure along the axial direction.
In a specific embodiment, the engagement member is provided with a guide portion, and the adjustment member is provided with a sliding portion adapted to the guide portion to achieve telescopic adjustment in the axial direction.
In a specific embodiment, the intermediate section is an axially segmented structure, the segments being detachably connected to each other.
In a specific embodiment, the positioning portion is a containing space which is arranged between the adjusting member and the connecting member and changes along with telescopic adjustment, and the cushion block is arranged in the containing space to limit the adjusting member in a set telescopic length.
In a specific embodiment, the intermediate section, the fixed end, and the engagement member are tubular structures.
In a specific embodiment, the end parts connected between the middle section and the fixed end and the joint are respectively provided with a flange to realize detachable connection, and each section end part of the middle section is provided with a flange to realize detachable connection.
In a specific embodiment, a plurality of ribs are respectively arranged between the middle section, the fixed end, the outer wall of the tubular structure of the joint piece and the flange along the circumferential direction so as to strengthen the connection strength.
In a specific embodiment, the free end face of the adjusting member is provided with a load cell support at a position along the axis for placing a load cell to monitor the prestress.
In a specific embodiment, the engagement member is provided with a first counter-portion for being stressed upon application of an axial pre-stress, and the adjustment member is provided with a second counter-portion for being stressed in interaction with the first counter-portion upon application of an axial pre-stress.
In a specific embodiment, the intermediate section is provided with reinforcing plates along the circumference of the outer wall of the tubular structure to enhance the structural strength of the intermediate section.
The embodiment of the application has the advantages that:
1. according to the length-adjustable support piece, the support structure is designed into the middle section, the fixed end and the movable end, corresponding structural functions are respectively realized, the production and the processing of the assembly and the field installation are convenient, and the modularization level of the related assembly of the support system is improved.
2. This adjustable length's support piece has further strengthened the nimble adjustment ability of support piece when on-the-spot equipment through setting up telescopic adjustment structure, and this flexible allowance has improved the adaptability of support piece to on-the-spot complicated operating mode, carries out spacing operation when the location portion of setting up is convenient for prestressing force to apply the predetermined value, guarantee construction speed.
3. The support piece with the adjustable length is used for carrying out sectional design on the middle section, and connection among all the sections and connection among the middle section, the fixed end and the movable end are realized through the flange structure, so that the modularization level of the assembly is further improved, and the assembly on site and the later disassembly, recovery and reuse are facilitated.
4. The length-adjustable support piece is provided with the force measuring bracket at the free end face of the adjusting piece along the axial line position for placing the force measuring element to monitor the prestress, and the positions of the joint piece and the adjusting piece, which correspond to the positions of the joint piece and the adjusting piece, are respectively provided with the parts capable of exerting reaction force mutually so as to conveniently set the prestress on the support piece, thereby meeting the field construction requirement and improving the functionalization level of the support piece.
Drawings
FIG. 1 is a schematic supporting view of a foundation pit supporting structure by a movable end and a fixed end of a supporting member with adjustable length;
FIG. 2 is a schematic view of a middle section of a length adjustable support of the present application;
FIG. 3 is a schematic illustration of a flange connection of a length adjustable support member intermediate section structure of the present application;
FIG. 4 is a schematic illustration of a length adjustable support member middle section joint structure connection of the present application;
FIG. 5 is a schematic cross-sectional view of a length adjustable support movable end engagement member of the present application;
fig. 6 is a schematic view of a length adjustable support movable end adjuster in a semi-sectional view.
The main reference numerals illustrate:
1-a movable end; 2-a fixed end; 3-an intermediate section; 4-flanges; 5-bolts; 6-rib plates; 7-reinforcing plates; 8-engagement; 9-an adjusting piece; 10-a guide part; 11-a sliding part; 12-a first branch; 13-second branch.
Detailed Description
According to the embodiment of the application, the length-adjustable supporting piece is provided, so that the supporting piece can be used for supporting system construction of a large-span foundation pit support structure, construction safety is guaranteed, and the engineering construction efficiency, economic benefit and environmental benefit are improved through the recyclable modularized structural design, and the overall thinking is as follows:
referring to fig. 1-6, a length-adjustable support member is configured to provide a supporting force to a foundation pit supporting structure, and includes a middle section 3, a fixed end 2, and a movable end 1. One end of the fixed end 2 is axially connected with the middle section 3, and the other end is used for applying axial prestress to the supporting structure; the movable end 1 comprises a joint part 8 and an adjusting part 9, one end of the joint part 8 is axially connected with the middle section 3, the other end of the joint part 8 is connected with the adjusting part 9 which can axially stretch and retract, the movable end 1 is provided with a positioning part to limit the set stretching length, and the free end of the adjusting part 9 is used for applying prestress to the supporting structure along the axial direction. This length adjustable support piece is through designing bearing structure as interlude 3, stiff end 2, three part of expansion end 1, interlude 3 realizes the connected function to stiff end 2, expansion end 1, be convenient for carry out standardized production in order to improve the suitability to interlude 3, expansion end 1 can realize on-the-spot micro-adjustment to support piece service length and exert prestressing force, stiff end 2 has further improved the modularization level and the replaceability of subassembly processing and equipment to improve efficiency of construction and engineering quality, be convenient for retrieve simultaneously and reuse in order to reduce construction cost.
In this example, the middle section 3, the fixed end 2 and the joint 8 are of steel tubular structures, so that the steel is processed according to design before construction, and recycled after the engineering is finished. The joint 8 is provided with a guide part 10, the adjusting part 9 is provided with a sliding part 11 matched with the guide part 10 to realize telescopic adjustment along the axial direction, the realizing structure and the setting position of the guide part 10 and the sliding part 11 can be in various modes, in this example, as shown in fig. 5 and 6, the guide part 10 is formed by a plurality of plate-shaped structures which are arranged in the inner cavity of the pipe body of the joint 8 and are welded on the inner wall of the pipe body along the axial direction, and the sliding part 11 is matched with the section shape of the guide part 10 to slidably adjust the distance between the adjusting part 9 and the joint 8 along the section shape.
For prestressing the support, the joint 8 is provided with a first counter-portion 12 for bearing force when an axial prestressing force is applied, and the adjusting member 9 is provided with a second counter-portion 13 for bearing force in interaction with the first counter-portion 12 when an axial prestressing force is applied. Preferably, in order to simplify the structure and facilitate the production and processing, the first counter portion 12 of the present embodiment is disposed at an end surface position of the end where the joint member 8 is connected to the adjusting member 9, the second counter portion 13 is disposed at a side of the free end of the adjusting member 9 opposite to the first counter portion 12, a space between the first counter portion 12 and the second counter portion 13 is used for placing a force application device, such as a hydraulic jack, and the like, and the first counter portion 12 and the second counter portion 13 are biased by the two ends of the hydraulic jack, and the first counter portion 12 and the second counter portion 13 are reacted with each other, so that the free end of the fixed end 2 and the free end of the adjusting member 9 transmit prestress and act on the supporting structure, respectively, thereby generating a supporting force on the supporting structure. Further, in order to improve stress stability, stress parts of the first prop-up portion 12 are symmetrically arranged on two sides of the axis of the support member, and stress parts of the second prop-up portion 13 are correspondingly symmetrically arranged on two sides of the axis of the support member, so that hydraulic jacks can be symmetrically arranged on two sides of the axis of the support member, and excessive deflection of the support member caused by asymmetric force application is avoided. In some embodiments, the free end face of the adjusting member 9 is provided with a force measuring bracket along the axial line for placing a force measuring element such as an axial force meter and the like to monitor the real-time value of the prestress, and when in use, the axial force meter is placed in the force measuring bracket, and the axial force meter is positioned between the free end of the adjusting member 9 and the supporting structure, and the two ends of the axial force meter are respectively subjected to the acting force transmitted by the free end of the adjusting member 9 and the supporting structure under the action of the prestress, so that the measurement of the prestress is realized.
Further, after the prestressing force is applied to the supporting member, in order to maintain the prestressing force after the unloading of the force applying device such as the hydraulic jack, the positioning portion provided at the movable end 1 can limit the telescopic length in the state after the preset prestressing force is applied, and the implementation structure of the positioning function can be various. Specifically, the accommodating space is arranged at the upper end of the sliding part 11 of the adjusting member 9, the inner wall of the pipe body of the joint member 8 is provided with a corresponding limit structure, so that the accommodating space has a structure accommodating capacity which is variable along the axial direction along with the expansion and contraction of the adjusting member 9, and when the accommodating space is applied to the set prestress, the accommodating space is wedged by arranging a cushion block in the accommodating space, so that the prestress of the support member is still maintained after the force application device such as a hydraulic jack is unloaded. The positioning part can be combined with the guiding part 10 and the sliding part 11 to form a design margin for telescopic adjustment of the movable end 1 so as to ensure the modularization processing of the components and the flexibility of on-site adjustment.
In some embodiments, as shown in fig. 3, the intermediate section 3 may be an axially segmented structure, with the segments being detachably connected to each other. Specifically, for the main body of the embodiment, a supporting member with a tubular structure is adopted, the ends connected between the middle section 3 and the fixed end 2 and the connecting member 8 are respectively provided with a flange 4 to realize detachable connection, the end parts of the sections of the middle section 3 are also provided with flanges 4 to realize detachable connection, and the connecting flanges 4 can be fixed through bolts 5, see fig. 2-4. Meanwhile, in order to strengthen the connection strength of the flange 4 structure and the pipe body and the connection strength of the flange 4 between the components, a plurality of rib plates 6 are welded between the flange 4 and the outer wall of the tubular structure of the middle section 3, the fixed end 2 and the joint piece 8 along the circumferential direction. The intermediate section 3 realizes the connection between each section and the connection between the intermediate section 3, the fixed end 2 and the movable end 1 through the flange 4 structure, thereby further improving the modularization level of the assembly, facilitating the assembly on site and the disassembly, recovery and reuse in the later stage. It should be noted that a flange 4 structure or an end plate structure may be provided at the free end of the fixed end 2 so as to be connected and fixed with the relevant parts of the stress portion of the supporting structure by bolts 5. In order to further improve the structural strength of the middle section 3, a reinforcing plate 7 can be arranged on the middle section 3 along the circumferential direction of the outer wall of the tubular structure, and the reinforcing plate 7 can be of an integral structure or a segmented structure; the intermediate section 3 may also be provided with an inner annular plate along the circumference of the inner wall of the tubular structure to improve the structural safety of the support to a greater extent.
In sum, the length-adjustable support piece can solve the problems of continuity and stability of a large-span foundation pit support system, construction efficiency of the support system and recycling of building materials in the building construction process, can be used for building the support system of the large-span foundation pit support structure, ensures construction safety, and improves engineering construction speed, economic benefit and environmental benefit through the recyclable modularized structural design.
Finally, it should be noted that: it is apparent that the above examples are only examples for clearly illustrating the present application and are not limited to the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are intended to be within the scope of the present application.
Claims (10)
1. A length adjustable support for providing support force to a foundation pit support structure, comprising:
an intermediate section;
the fixed end is axially connected with the middle section at one end and is used for applying axial prestress to the supporting structure at the other end; and
the movable end comprises a joint piece and an adjusting piece, one end of the joint piece is axially connected with the middle section, the other end of the joint piece is connected with the adjusting piece which can axially stretch, the movable end is provided with a positioning part to limit the set stretching length, and the free end of the adjusting piece is used for applying prestress to the supporting structure along the axial direction.
2. A length adjustable support member according to claim 1, wherein said engagement member is provided with a guide portion and said adjustment member is provided with a sliding portion adapted to the guide portion for telescopic adjustment in the axial direction.
3. A length adjustable support according to claim 2, wherein said intermediate section is of axially segmented construction, the segments being detachably connected to each other.
4. A length adjustable support member according to any one of claims 1-3, wherein the positioning portion is a space provided between the adjustment member and the engagement member and changing with telescopic adjustment, and a spacer is provided in the space to limit the adjustment member at a set telescopic length.
5. A length adjustable support according to claim 4 wherein said intermediate section, fixed end, and engagement member are tubular structures.
6. A length adjustable support member according to claim 5, wherein the ends of said intermediate section connected to said fixed end and said engagement member are respectively provided with flanges for removable connection, and wherein the ends of each segment of said intermediate section are provided with flanges for removable connection.
7. The support member of claim 6, wherein a plurality of ribs are provided between the intermediate section, the fixed end, the outer wall of the tubular structure of the joint member and the flange in the circumferential direction, respectively, to enhance the connection strength.
8. A length adjustable support according to claim 7, wherein the free end face of the adjustment member is provided with a load cell support along the axial position for placing a load cell to monitor the prestress.
9. A length adjustable support member according to claim 8, wherein said engagement member is provided with a first counter-portion for bearing force upon application of an axial pre-stress, and said adjustment member is provided with a second counter-portion for bearing force upon interaction with the first counter-portion upon application of an axial pre-stress.
10. A length adjustable support according to any one of claims 5-9, wherein the intermediate section is provided with stiffening plates along the circumference of the outer wall of the tubular structure to enhance the structural strength of the intermediate section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223332100.3U CN219118173U (en) | 2022-12-13 | 2022-12-13 | Length-adjustable supporting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223332100.3U CN219118173U (en) | 2022-12-13 | 2022-12-13 | Length-adjustable supporting piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219118173U true CN219118173U (en) | 2023-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223332100.3U Active CN219118173U (en) | 2022-12-13 | 2022-12-13 | Length-adjustable supporting piece |
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| Country | Link |
|---|---|
| CN (1) | CN219118173U (en) |
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2022
- 2022-12-13 CN CN202223332100.3U patent/CN219118173U/en active Active
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