CN218263897U - Combined steel sheet pile gravity type enclosure wall structure - Google Patents
Combined steel sheet pile gravity type enclosure wall structure Download PDFInfo
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- CN218263897U CN218263897U CN202221497859.4U CN202221497859U CN218263897U CN 218263897 U CN218263897 U CN 218263897U CN 202221497859 U CN202221497859 U CN 202221497859U CN 218263897 U CN218263897 U CN 218263897U
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Abstract
The utility model provides a combined steel sheet pile gravity type enclosure wall structure, which is characterized in that a plurality of steel sheet pile units driven into the soil are connected with each other to form a honeycomb enclosure wall together with the soil body; the honeycomb enclosure wall is formed by topologically connecting steel sheet pile units in a common edge mode, the steel sheet pile units and an internal soil body form a common stressed whole, a honeycomb section formed by the steel sheet pile units provides bending rigidity, and the internal soil body of the steel sheet pile units provides self weight for the honeycomb enclosure wall; the section of the steel sheet pile unit is regular hexagon and consists of a linear type steel sheet pile and a corner connecting piece which are connected through a locking port connecting structure. The utility model discloses a use the steel sheet pile to replace the gravity type enclosure wall of cement mixing pile, improved the bending stiffness in enclosure wall cross-section, form the combined action of space net with make full use of stake soil, reduce the deformation of foundation ditch, the cross-section combination form is various, the construction is swift, can retrieve completely, environmental protection economy.
Description
Technical Field
The utility model belongs to foundation ditch retaining structure field among the municipal building engineering, concretely relates to combination steel sheet pile gravity type enclosure wall structure.
Background
The foundation pit engineering can adopt slope excavation under the conditions of shallow foundation pit depth and simple surrounding environment, and most of the foundation pit engineering relates to a supporting structure. Common supporting structures can be divided into two categories: the first type is a self-standing enclosure system which comprises a cement-soil gravity type enclosure wall, a soil nail wall and a cantilever plate type enclosure wall, and the enclosure system does not need to be provided with a support, so that the safety and the stability of a foundation pit can be ensured by utilizing the enclosure wall per se; the second type is a plate type supporting system, which comprises a form that a surrounding wall is combined with an inner support and a form that the surrounding wall is combined with an anchor rod, wherein the surrounding wall and the support or the anchor rod act in a synergistic manner to jointly control the deformation of a foundation pit. At present, with the development of urban underground spaces, such as basements, comprehensive pipe galleries, underground sewage treatment plants and the like, under the condition that the plane size of a foundation pit is larger, the arrangement of an inner support is inconvenient for the construction of a main structure, the requirements of a self-standing enclosure system are gradually increased, and the foundation pit supporting rigidity of a cantilever type steel sheet pile enclosure wall is small, the deformation is large, so that the cantilever type steel sheet pile enclosure wall is not suitable for deeper foundation pits with higher environmental protection requirements; the gravity type retaining wall using the cement soil mixing pile as the enclosure wall needs to use a large amount of cement, cannot realize the recycling of materials, and is difficult to respond to the national policy of carbon emission reduction.
CN212452672U provides novel double steel sheet pile foundation ditch supporting construction, through setting up double steel sheet pile and set up two rows of steel sheet piles of reinforcing bar connection at the top, makes double steel sheet pile form a enclosure wall structure that bending rigidity is bigger, and the top need not to set up extra support, provides more operating space for the construction. This patent provides a way of not establishing enclosure wall of support, utilize the recoverable advantage of steel sheet pile, overcome the big shortcoming of the little deformation of single row steel sheet pile rigidity with the pattern of double row pile, the security of foundation ditch has been satisfied to a certain extent, construction cost has been practiced thrift, but the connected mode of double row pile plane truss is difficult to make full use of stake soil combined action, cross-sectional rigidity increase range is limited, still there is the great problem of steel sheet pile lateral displacement to darker foundation ditch.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a combination steel sheet pile gravity type enclosure wall structure and construction method thereof realizes replacing the gravity type enclosure wall of cement mixing pile with the steel sheet pile, improves the bending rigidity in enclosure wall cross-section greatly, forms the combined action of space net with make full use of stake soil, reduces the deformation of foundation ditch, and the cross-section combination form is various, the construction is swift, can retrieve completely, environmental protection economy.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a combined steel sheet pile gravity type enclosure wall structure is characterized in that a plurality of steel sheet pile units driven into soil are connected with one another, and the steel sheet pile units and the soil body form a honeycomb enclosure wall. The cellular enclosure wall is formed by topologically connecting steel sheet pile units in a common edge mode, the steel sheet pile units and an internal soil body form a common stressed whole, a cellular section formed by the steel sheet pile units provides larger bending rigidity, and the internal soil body of the steel sheet pile units provides enough dead weight for the cellular enclosure wall so as to meet the calculation requirements of foundation pit deformation and overall stability. And the enclosure wall steel sheet piles are connected by adopting locking notches, and the steel sheet piles can be pulled out and recovered after the foundation pit is backfilled. The cross section of the steel sheet pile unit is in a regular hexagon shape and consists of linear steel sheet piles and corner connecting pieces which are connected through a locking port connecting structure.
Preferably, the two ends of the linear steel sheet pile are provided with locking notches, the locking notches are opposite to each other, and the linear steel sheet pile is connected with the corner connecting piece through the locking notches.
More preferably, hooks are arranged at the opening parts of the locking openings at the two ends of the linear steel sheet pile, and the pair of locking openings are inserted in the positive and negative directions and are mutually meshed by virtue of the hooks, so that the components are stably and reliably connected.
Preferably, the corner connecting piece comprises three semi-section linear type steel sheet piles, and the end parts of the semi-section linear type steel sheet piles are provided with locking notches, so that the locking notches are connected with the linear type steel sheet piles.
More preferably, the three half-section linear steel sheet piles form a plane included angle of 120 degrees with each other.
More preferably, three fore shafts at the ends of the three semi-section linear steel sheet piles are opened along the same direction, hooks are arranged at the openings, and the three fore shafts can be connected with the fore shafts at the ends of the linear steel sheet piles in an occlusion mode through the hooks.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a novel combination steel sheet pile gravity type enclosure wall structure has improved the bending stiffness of steel sheet pile greatly, and cellular combination form is favorable to strengthening the combined action of stake soil to improved enclosure wall structure's bearing capacity, controlled the displacement deformation of gravity type barricade, regular hexagon's unit can have different combination forms simultaneously, can adapt to the foundation ditch boundary of different shapes. And simultaneously, the utility model discloses make full use of the recoverable advantage of steel sheet pile, greatly reduced the cost, the environmental protection economy of foundation ditch enclosure. The construction is more convenient, more standardized, more environment-friendly and more economical.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a plan view of the overall structure of an embodiment of the present invention;
fig. 2 is a cross-sectional view of the overall structure of an embodiment of the present invention;
FIG. 3 is a component connection diagram of an embodiment of the present invention;
fig. 4 is a detailed view of the locking notch connection of the embodiment of the present invention;
in the figure:
the steel sheet pile comprises a steel sheet pile unit 01, a linear steel sheet pile 101, a corner connecting piece 102 and a locking notch connecting structure 103.
Detailed Description
The present invention will be described in detail with reference to specific embodiments. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
Examples
In the embodiment, a novel combined steel sheet pile gravity type enclosure wall structure is adopted, as shown in fig. 1-4, the structure is formed by mutually connecting a plurality of steel sheet pile units 01 driven into the soil and forming a honeycomb enclosure wall together with the soil body. The honeycomb enclosure wall is formed by topologically connecting regular hexagonal steel sheet pile units 01 in a common edge mode, the steel sheet pile units 01 and an internal soil body form a common stressed whole, a honeycomb section formed by the steel sheet pile units 01 can provide large bending rigidity, and the internal soil body of the steel sheet pile units 01 provides enough self weight for the honeycomb enclosure wall so as to meet the requirements of foundation pit deformation and overall stability calculation. And the enclosure wall steel sheet piles are connected by adopting locking notches, and the steel sheet piles are pulled out and recovered after the foundation pit is backfilled. The section of the steel sheet pile unit 01 is a regular hexagon, and the steel sheet pile unit is composed of 6 linear steel sheet piles 101 and 6 corner connecting pieces 102 which are connected through a locking notch connecting structure 103.
Two ends of the linear steel sheet pile 101 are provided with reverse locking notches, and the linear steel sheet pile is connected with the corner connecting piece 102 through the locking notches. The opening parts of the locking openings at the two ends of the linear steel sheet pile 101 are provided with hooks, a pair of locking openings are inserted in the positive and negative directions, and the hooks are mutually occluded, so that the components are stably and reliably connected.
In some embodiments, the linear steel sheet pile 101 is a linear hot rolled steel sheet pile 500mm wide and 13mm thick with reversed locking notches at both ends, and the length of the steel sheet pile is determined according to the depth of the foundation pit and the stability requirement.
The corner connecting member 102 is composed of three semi-section linear steel sheet piles, and the ends of the semi-section linear steel sheet piles are provided with locking notches through which the linear steel sheet piles 101 are connected. The three locking openings are opened along the same direction, hooks are arranged at the openings, and the three locking openings can be meshed and connected with the linear type steel sheet pile 101 through the hooks.
In some embodiments, the three semi-section linear steel sheet piles are formed by longitudinally cutting the linear steel sheet pile 101 into two halves, the width of each half-section linear steel sheet pile is 250mm, the thickness of each half-section linear steel sheet pile is 13mm, the length of each half-section linear steel sheet pile is not less than that of the linear steel sheet pile 101, and the three semi-section linear steel sheet piles are welded to form a 120-degree plane included angle.
The construction process of the above structure is described below, and the construction steps mainly include:
s1, designing a plan view of a foundation pit of the combined steel sheet pile gravity type retaining wall enclosure structure, and prefabricating the linear steel sheet pile and the corner connecting piece in a factory according to a drawing;
s2, leveling the site to a designed elevation, and determining plane position coordinates of each corner connecting piece node according to the foundation pit plan;
s3, pressing the corner connecting piece 102 into the soil by using a pile driver, and then pressing the linear steel sheet pile 101 in, wherein the locking notch of the linear steel sheet pile 101 is mutually meshed with the locking notch of the corner connecting piece 102, and the locking notch directions of the corner connecting piece 102 are completely consistent;
in this embodiment, the locking hook directions of the corner connectors 102 are both open along the counterclockwise direction, and the locking hook directions of the two ends of the linear steel sheet pile 101 are reversely engaged with the locking hook directions of the two adjacent corner connectors 102 to form stable connection.
S4, dewatering, excavating and backfilling the foundation pit, and implementing relevant steps of foundation pit engineering;
and S5, pulling out the linear steel sheet pile 101 and the corner connecting piece 102, and backfilling the hole after pile pulling. The pulling-out sequence is that the regular hexagon unit components 01 of a single layer are pulled out firstly, and then the regular hexagon unit components 01 of a double layer are pulled out.
The embodiment utility model and construction method thereof pass through the combined action of cellular combination form make full use of stake soil, improved the bending rigidity of steel sheet pile greatly to improve enclosure wall's bearing capacity, controlled the displacement deformation of gravity type barricade, make full use of the recoverable advantage of steel sheet pile simultaneously, greatly reduced foundation ditch enclosure's cost makes the construction more convenient, more standardized, more environmental protection economy.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (6)
1. A combined steel sheet pile gravity type enclosure wall structure is characterized in that the enclosure wall structure is formed by mutually connecting a plurality of steel sheet pile units driven into soil and forming a honeycomb enclosure wall together with a soil body; the honeycomb enclosure wall is formed by topologically connecting steel sheet pile units (01) in a common edge mode, and the steel sheet pile units (01) and an internal soil body form a common stressed whole; the cross section of the steel sheet pile unit (01) is a regular hexagon and consists of a linear steel sheet pile (101) and a corner connecting piece (102) which are connected through a locking port connecting structure (103).
2. A modular steel sheet pile gravity type enclosure wall structure according to claim 1, wherein locking notches are provided at both ends of the linear steel sheet pile (101), the locking notches are opposite to each other, and the linear steel sheet pile (101) is connected with the corner connector (102) through the locking notches.
3. The gravity type enclosure wall structure of the combined steel sheet pile as claimed in claim 2, wherein hooks are arranged at the opening of the locking notches at two ends of the linear steel sheet pile (101), and a pair of locking notches are inserted in the front and back direction and are mutually meshed and connected through the hooks.
4. A composite steel sheet pile gravity type enclosure wall structure according to claim 1 or 2, wherein the corner connectors (102) are composed of three half-section linear steel sheet piles, and locking notches are arranged at the ends of the half-section linear steel sheet piles and are connected with the linear steel sheet piles (101) through the locking notches.
5. The gravity type enclosure wall structure of the combined steel sheet pile as claimed in claim 4, wherein the three half-section linear steel sheet piles form an included angle of 120 degrees with each other.
6. The gravity type enclosure wall structure of the combined steel sheet pile as claimed in claim 4, wherein the number of the locking notches at the ends of the three half-section linear steel sheet piles is three, the three half-section linear steel sheet piles are opened along the same direction, hooks are arranged at the openings, and the locking notches at the ends of the linear steel sheet piles (101) are connected through the hooks in an occlusion mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221497859.4U CN218263897U (en) | 2022-06-15 | 2022-06-15 | Combined steel sheet pile gravity type enclosure wall structure |
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| CN202221497859.4U CN218263897U (en) | 2022-06-15 | 2022-06-15 | Combined steel sheet pile gravity type enclosure wall structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059089A (en) * | 2022-06-15 | 2022-09-16 | 上海市政工程设计研究总院（集团）有限公司 | Combined steel sheet pile gravity type enclosure wall structure and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059089A (en) * | 2022-06-15 | 2022-09-16 | 上海市政工程设计研究总院（集团）有限公司 | Combined steel sheet pile gravity type enclosure wall structure and construction method thereof |
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