CN218990208U - Trench vertical excavation supporting construction - Google Patents

Trench vertical excavation supporting construction Download PDF

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Publication number
CN218990208U
CN218990208U CN202223005850.XU CN202223005850U CN218990208U CN 218990208 U CN218990208 U CN 218990208U CN 202223005850 U CN202223005850 U CN 202223005850U CN 218990208 U CN218990208 U CN 218990208U
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China
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trench
strip
shaped locking
retaining wall
wall
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CN202223005850.XU
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Chinese (zh)
Inventor
欧竞泽
罗茂华
戴超
赵云鹏
文仁武
刘腾
李智
杨井
简正阳
任运豪
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China Construction Third Bureau Group Co Ltd
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China Construction Third Bureau Construction Engineering Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/60Planning or developing urban green infrastructure

Abstract

The utility model discloses a trench vertical excavation supporting structure, which comprises a supporting main body, wherein the supporting main body comprises a strip-shaped locking port and a protective wall arranged at the bottom of the strip-shaped locking port, the strip-shaped locking port is arranged at the left side and the right side of the top of a trench along the length direction of the trench, the protective wall is arranged in a segmented manner along the depth direction of the trench, a plurality of transverse supporting partition walls are arranged on the front side and the back side of the trench and between the front side and the back side of the trench, the transverse supporting partition walls are arranged in a segmented manner along the depth direction of the trench, the left side and the right side of the transverse supporting partition walls are respectively connected with the supporting main body, the bottom surface of the trench is provided with a bottom plate connected with the bottom of the protective wall, the bottom of the transverse supporting partition walls is reserved with an installing port, and the strip-shaped locking port, the protective wall, the transverse supporting partition walls and the bottom plate all comprise concrete structures, and the inner parts of the concrete structures of the strip-shaped locking port, the protective wall, the transverse supporting partition walls and the bottom plate are provided with mutually connected steel bar structures; the utility model has the advantages of small disturbance, high safety and wide applicability.

Description

Trench vertical excavation supporting construction
Technical Field
The utility model belongs to the technical field of trench construction, and particularly relates to a trench vertical excavation supporting structure.
Background
The rapid development of cities continuously brings new requirements for the conveying capacity of the urban pipe network, and the conveying capacity gradually decreases along with the aging of the urban pipe network, so that the normal demands of the cities cannot be met, and the urban pipe network needs to be continuously updated and modified. The pipe network reconstruction construction in the current stage of China still mainly comprises excavation and restoration, and the pipe network reconstruction construction in the old urban area has the problems of complex construction environment, high difficulty in traffic dispersion, high difficulty in external coordination and the like, and trench excavation can only adopt vertical excavation. In particular, in the pipe network construction involving rail transit, railways, viaducts and related auxiliary structures, special protection measures are required for related facilities, and the construction machinery and the construction range are often limited greatly, so that the selection of the support form in the trench excavation process is particularly important.
The traditional trench vertical excavation supporting mode adopts a transverse plate supporting mode or a steel pipe pile supporting mode. The horizontal plate support has lower support strength and is generally only suitable for supporting the trench with better geological conditions and shallower excavation depth. The steel pipe pile support has higher requirements on support materials and construction machinery, and large-scale road occupation construction needs to occupy a larger road width, meanwhile, vibration generated by the steel pipe pile construction easily causes adverse effects on adjacent buildings, foundation of structures and structures, even structural safety and use functions are affected, and construction noise is large.
In the prior art, the strength of the support and the support of the transverse plate is low, and the application range is small; the steel pipe pile support has high requirements on support materials and construction machinery, and the mechanical operation has large disturbance.
Disclosure of Invention
The utility model aims at solving the problems in the prior art and provides a trench vertical excavation supporting structure, which breaks through the limitations of high requirements on construction machinery and supporting materials and large disturbance of mechanical operation of the traditional trench vertical excavation steel pipe pile supporting, and has the advantages of small disturbance, high safety and wide applicability.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a slot vertical excavation supporting structure, includes the supporting body, the supporting body contains banded fore shaft and locates the dado of banded fore shaft bottom, the left and right sides at slot top is located along slot length direction to banded fore shaft, the dado sets up along slot depth direction segmentation, is provided with a plurality of stull partition walls between the front and back side and the front and back side of slot, the stull partition wall sets up along slot depth direction segmentation, the left and right sides of stull partition wall is connected with the supporting body respectively, the bottom surface of slot is provided with the bottom plate of being connected with the bottom of dado, the bottom of stull partition wall is reserved there is the installing port, banded fore shaft, dado, stull partition wall, bottom plate all contain concrete structure, banded fore shaft, dado, stull partition wall, the inside interconnect's of concrete structure that is provided with of bottom plate.
In the scheme, the strip-shaped locking openings are formed in the two sides of the top of the groove along the length direction, the retaining walls are arranged at the bottoms of the strip-shaped locking openings, so that the collapse of the groove top and the sinking of the supporting structure are prevented, meanwhile, the rainwater on the ground surface is prevented from flowing into the groove, the safety of the groove is guaranteed, the retaining walls and the transverse supporting partition walls are constructed in a segmented mode along with the downward digging of the groove, the stability of the construction structure is guaranteed, the transverse supporting partition walls are arranged to guarantee the stability of the supporting main body, supporting force is provided, the retaining walls are prevented from being deformed by the soil layer pressure, the transverse supporting partition walls, the retaining walls and the bottom plate on the front side and the rear side of the groove are connected to support the soil layer of the groove through the concrete structure, the groundwater is prevented from invading the groove, the bearing capacity of the foundation of the pipeline is influenced, the construction progress is hindered, the installation openings are reserved between the transverse supporting partition walls and the bottom plate, the inner reinforcing steel bar structures of the strip-shaped locking openings, the retaining walls, the transverse supporting partition walls and the bottom plate are connected with each other, and the stability of the whole structure is guaranteed.
The reinforcing steel bars of the strip-shaped locking notch, the retaining wall and the internal transverse supporting partition wall are integrally formed through integral binding or binding lap joint and welding, the retaining wall and the internal transverse supporting partition wall are synchronously cast and constructed along with the section and section of the hole digging height, a supporting whole is formed, the wall of the deep digging groove is pressed and fixed, the shape of the groove is unchanged, meanwhile, the phenomena of water seepage and void of the wall of the groove are avoided, and collapse accidents are prevented.
Further, the cross brace partition walls between the front side surface and the rear side surface of the groove are equidistantly arranged along the length direction of the groove.
The equidistance sets up the bracing partition wall and guarantees that the support main part atress of slot both sides is even, improves stability.
Furthermore, the inner side surface of the protective wall is an inclined surface, the width of the protective wall is gradually increased from bottom to top, and the top of the inner side of the protective wall is provided with a built-in structure.
The inner side surface of the retaining wall is provided with an inclined plane, so that the retaining wall is convenient to connect with the embedding structure, the connection part with the upper strip-shaped locking port or the retaining wall is ensured to be embedded stably through the embedding structure, the steel bars are firmly connected, and the steel bars are prevented from being exposed.
Further, the embedding structure comprises a protruding portion, and the protruding portion is attached to the inner side face of the bottom of the retaining wall or the strip-shaped locking notch.
The connection with the upper side retaining wall or the bottom of the strip-shaped locking notch is enhanced through the protruding part, so that the connection part is embedded and fixed stably.
Furthermore, the reinforcement structures of the strip-shaped locking notch, the retaining wall, the transverse supporting partition wall and the bottom plate are welded or bonded and lapped; when the retaining wall or the strip-shaped locking notch is constructed, the bottom end of the reinforcing steel bar structure of the retaining wall or the strip-shaped locking notch is provided with an extending connecting part.
Welding or ligature overlap joint make the connection stable between the reinforced bar structure, strengthen the structure of whole supporting construction through the reinforced bar structure, when the construction, the reinforced bar structure of dado or banded fore shaft sets up and stretches out connecting portion and conveniently is connected with downside dado.
Further, the height of each section of the retaining wall is not more than 1 meter, and the distance between every two adjacent transverse supporting partition walls is not more than 6m.
The dado height is not more than 1 meter, guarantees the stability of supporting construction, prevents that high soil layer from collapsing to the slot in, and the interval setting of stull partition wall guarantees the support intensity to both sides supporting main part.
Concrete strength and concrete requirements of the type of the steel bars used in the utility model are determined by a design unit according to actual geological conditions, excavation depth and other influencing factors. The applicable geological conditions and depth ranges of the support form should be accounted for by the design unit.
Compared with the prior art, the utility model has the beneficial effects that:
1. the form of pouring the supporting structure is carried out along with the trench excavation on site, and the locking ports, the retaining walls, the bottom plates and the internal transverse supporting partition walls are arranged along the longitudinal section of the trench excavation and the section of the trench excavation depth, so that the influence on surrounding soil layers and buildings is small, the construction is simple, the disturbance is small, and the construction noise in the pile driving process of the steel pipe pile supporting is avoided;
2. the locking notch, the retaining wall, the bottom plate and the internal cross brace partition wall of the reinforced concrete structure are arranged in the groove, the height of the retaining wall is adjustable, and the reinforced concrete structure is suitable for construction of grooves with various depths and narrow spaces and has wide application range;
3. the transverse supporting partition wall and the bottom plate are arranged on the supporting main body foundation to strengthen the supporting main body structure, the compression resistance and the water seepage resistance of the structure are improved, the supporting system is safe and reliable, and the safety of groove supporting is improved.
Drawings
Fig. 1 is a schematic structural diagram of a trench vertical excavation supporting structure in embodiment 1 of the present utility model;
FIG. 2 is a top view of a trench vertical excavation supporting structure in accordance with embodiment 1 of the present utility model;
FIG. 3 is a schematic view showing the structure of a single segment of the retaining wall in embodiment 1 of the present utility model;
in the figure: 1. a band-shaped locking notch; 2. a retaining wall; 21. a boss; 3. a cross brace partition wall; 4. a bottom plate; 5. a concrete structure; 6. a rebar structure; 61. a protruding connection portion; 7. a mounting port; 8. a pipeline.
Detailed Description
The following description of the embodiments of the present utility model will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on embodiments of the present utility model, are within the scope of the present utility model. In the description of the present utility model, it should be noted that, the terms front, rear, left, right, and the like indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship conventionally put in use of the inventive product, are merely for convenience of describing the present utility model or simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured or operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
Example 1
As shown in fig. 1-3, a trench vertical excavation supporting structure comprises a supporting main body, wherein the supporting main body comprises a strip-shaped locking notch 1 and a retaining wall 2 arranged at the bottom of the strip-shaped locking notch 1, the strip-shaped locking notch 1 is arranged on the left side and the right side of the top of the trench along the length direction of the trench, the retaining wall 2 is arranged along the section of the depth direction of the trench, a plurality of transverse supporting partition walls 3 are arranged between the front side and the rear side of the trench and the front side and the rear side of the trench, the transverse supporting partition walls 3 are arranged along the section of the depth direction of the trench, the left side and the right side of the transverse supporting partition walls 3 are respectively connected with the supporting main body, the bottom surface of the trench is provided with a bottom plate 4 connected with the bottom of the retaining wall 2, the bottom of the transverse supporting partition walls 3 is reserved with an installation opening 7, and the strip-shaped locking notch 1, the retaining wall 2, the transverse supporting partition walls 3 and the bottom plate 4 all comprise a concrete structure 5, and the reinforced structures 6 which are mutually connected are arranged inside the concrete structures 5 of the strip-shaped locking notch 1, the retaining wall 2, the transverse supporting partition walls 3 and the bottom plate 4.
In the scheme, the strip-shaped locking openings 1 are arranged on two sides of the top of the groove along the length direction, the retaining walls 2 are arranged at the bottoms of the strip-shaped locking openings 1, collapse of the groove top and sinking of the supporting structure are prevented, meanwhile, rainwater on the ground surface is prevented from flowing into the groove, safety of the groove is guaranteed, the retaining walls 2 and the transverse supporting walls 3 are constructed in a segmented and segmented mode along with the downward excavation of the groove, stability of the construction structure is guaranteed, the transverse supporting walls 3 are arranged to guarantee stability of a supporting main body, supporting force is provided, the retaining walls 2 are prevented from being deformed due to soil pressure, the transverse supporting walls 3, the retaining walls 2 and the bottom plate 4 on the front side and the rear side face of the groove are connected to support the soil layer of the groove through the concrete structure 5, groundwater is prevented from entering the groove, bearing capacity of the pipeline 8 is influenced, the construction progress is prevented, the installation openings 7 are reserved between the transverse supporting walls 3 and the bottom plate 4, the construction of the groove bottom is facilitated, the pipeline 8 is installed, the strip-shaped locking openings 1, the retaining walls 2, the transverse supporting walls 3 and the reinforcing structures 6 inside the bottom plate 4 are connected with each other, and the stability of the whole structure is guaranteed.
The reinforcing steel bars of the strip-shaped locking port 1, the retaining wall 2 and the inner transverse supporting partition wall 3 are integrally formed through integral binding or binding lap joint and welding, the retaining wall 2 and the inner transverse supporting partition wall 3 are synchronously cast and constructed along with the section and section of the hole digging height, a supporting whole is formed, the wall of the deep digging groove is pressed and fixed, the shape of the groove is unchanged, meanwhile, the phenomena of water seepage and void of the groove wall are avoided, and collapse accidents are prevented.
In the embodiment, the banded locking notch 1 is cast-in-situ reinforced concrete, the height is 300mm, the width is 800mm, the retaining wall 2 is cast-in-situ reinforced concrete, the height of a single section is 1000mm, the width of the bottom is 300mm, the maximum width is 350mm, the transverse strut partition wall 3 is cast-in-situ reinforced concrete, the thickness is 300mm, and the interval is not more than 6m. The retaining wall 2 is constructed in 3 segments along the depth direction of the groove. When the construction is carried out, after the strength of the upper section concrete reaches 50%, the next section of earth excavation is carried out. Through adjusting the wall protection 2 height, avoid the junction of upper and lower two-layer wall protection 2 to be located the sliding surface position, ensure the security of support. And C30 concrete is integrally poured for construction, so that a complete support system is formed. The length direction of the groove can be divided into a plurality of sections for construction, and the length of each section is determined according to the condition of a construction soil layer.
Further, the cross-bracing partition walls 3 between the front side and the rear side of the groove are equidistantly arranged along the length direction of the groove.
The equidistance sets up bracing partition wall 3 and guarantees that the support main part atress of slot both sides is even, improves stability.
Furthermore, the inner side surface of the retaining wall 2 is an inclined surface, the width of the retaining wall 2 is gradually increased from bottom to top, and the top of the inner side of the retaining wall 2 is provided with a embedding structure.
The inner side surface of the retaining wall 2 is provided with an inclined plane, so that the connection of the retaining wall is convenient for the connection of the embedding structure, the connection part with the upper strip-shaped locking port 1 or the retaining wall 2 is ensured to be embedded and fixed stably through the embedding structure, the connection of the reinforcing steel bars is firm, and the reinforcing steel bars are prevented from being exposed.
Further, the embedding structure comprises a protruding portion 21, and the protruding portion 21 is attached to the inner side face of the bottom of the retaining wall 2 or the strip-shaped locking port 1.
The connection with the upper side guard wall 2 or the bottom of the strip-shaped locking notch 1 is reinforced by the convex part 21, so that the connection is embedded and fixed stably.
Furthermore, the strip-shaped locking notch 1, the protective wall 2, the transverse supporting partition wall 3 and the reinforcing steel bar structure 6 of the bottom plate 4 are welded or bonded and lapped; when the retaining wall 2 or the strip-shaped locking notch 1 is constructed, the bottom end of the reinforcing steel bar structure 6 of the retaining wall 2 or the strip-shaped locking notch 1 is provided with an extending connecting part 61.
The welding or the ligature overlap joint makes the connection stable between the reinforced structure 6, strengthens the structure of whole supporting construction through reinforced structure 6, and when the construction, the reinforced structure 6 of dado 2 or banded fore shaft 1 sets up stretches out connecting portion 61 and conveniently is connected with downside dado 2. The length of the protruding connection 61 is 200mm-400mm, preferably 300mm.
Further, the height of each section of the retaining wall 2 is not more than 1 meter, and the distance between the adjacent cross-brace partition walls 3 is not more than 6m.
The retaining wall 2 is not more than 1 m in height, the stability of the supporting structure is guaranteed, the collapse of the high soil layer into the groove is prevented, and the supporting strength of the supporting main bodies on two sides is guaranteed through the interval arrangement of the transverse supporting partition walls 3.
Concrete strength and concrete requirements of the type of the steel bars used in the utility model are determined by a design unit according to actual geological conditions, excavation depth and other influencing factors. The applicable geological conditions and depth ranges of the support form should be accounted for by the design unit. By adopting the technical scheme, the utility model has the advantages that: simple construction, safe and reliable supporting system, small environmental impact and wide application range.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a slot vertical excavation supporting structure, its characterized in that, including the supporting main part, the supporting main part contains banded fore shaft and locates the dado of banded fore shaft bottom, banded fore shaft is located the left and right sides at slot top along slot length direction, the dado sets up along slot depth direction segmentation, is provided with a plurality of diaphragm walls between side and the front and back side around the slot, the diaphragm wall sets up along slot depth direction segmentation, the left and right sides of diaphragm wall is connected with the supporting main part respectively, the bottom surface of slot is provided with the bottom plate of being connected with the dado, the bottom of diaphragm wall is reserved there is the installing port, banded fore shaft, dado, diaphragm wall, bottom plate all contain concrete structure, banded fore shaft, dado, diaphragm wall, the inside interconnect's of concrete structure that is provided with of bottom plate.
2. The trench vertical excavation supporting structure of claim 1, wherein the cross brace partition walls between front and rear sides of the trench are disposed equidistantly along a length direction of the trench.
3. The trench vertical excavation supporting structure of claim 1, wherein the inner side surface of the retaining wall is an inclined surface, the width of the retaining wall is gradually increased from bottom to top, and the top of the inner side of the retaining wall is provided with a built-in structure.
4. A trench vertical excavation supporting structure as claimed in claim 3, wherein the keying structure comprises a boss which engages with the inner side of the bottom of the retaining wall or strip lock.
5. The trench vertical excavation supporting structure of claim 1, wherein the reinforcement structures of the strip-shaped locking notch, the retaining wall, the cross brace partition wall and the bottom plate are welded or bonded and lapped; when the retaining wall or the strip-shaped locking notch is constructed, the bottom end of the reinforcing steel bar structure of the retaining wall or the strip-shaped locking notch is provided with an extending connecting part.
6. The trench vertical excavation supporting structure of claim 1, wherein a height of each of the retaining walls is not more than 1 m, and a pitch of adjacent ones of the cross-brace partition walls is not more than 6m.
CN202223005850.XU 2022-11-11 2022-11-11 Trench vertical excavation supporting construction Active CN218990208U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223005850.XU CN218990208U (en) 2022-11-11 2022-11-11 Trench vertical excavation supporting construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223005850.XU CN218990208U (en) 2022-11-11 2022-11-11 Trench vertical excavation supporting construction

Publications (1)

Publication Number Publication Date
CN218990208U true CN218990208U (en) 2023-05-09

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ID=86215131

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Country Status (1)

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CN (1) CN218990208U (en)

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