CN210658411U - Waterproof leaking stoppage structure used in cooperation with SMW construction method pile enclosure wall - Google Patents
Waterproof leaking stoppage structure used in cooperation with SMW construction method pile enclosure wall Download PDFInfo
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- CN210658411U CN210658411U CN201921487787.3U CN201921487787U CN210658411U CN 210658411 U CN210658411 U CN 210658411U CN 201921487787 U CN201921487787 U CN 201921487787U CN 210658411 U CN210658411 U CN 210658411U
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Abstract
The utility model provides a waterproof leaking stoppage structure that cooperation SMW worker method stake enclosure wall used, waterproof leaking stoppage structure set up as follows, SMW worker method stake enclosure wall sets up at the foundation ditch edge, waterproof leaking stoppage structure includes outer stagnant water curtain, outer stagnant water curtain sets up outside the foundation ditch, outer stagnant water curtain is formed by a plurality of outer stagnant water stirring stake overlap joints in proper order, compares with SMW worker method stake enclosure wall, outer stagnant water curtain is far away from the foundation ditch; and the outer waterproof curtain is arranged at the leakage position of the pile enclosure wall in the SMW construction method and used for plugging and protecting leakage. The waterproof leaking stoppage structure adopts the design of welding the plugging steel plates on the outer waterproof curtain and the piles in the SMW construction method, and forms a common protection system with the existing SMW construction method pile enclosure wall to plug and protect the leakage position of the SMW construction method pile enclosure wall.
Description
Technical Field
The utility model relates to a building engineering technical field, in particular to cooperation SMW worker method stake enclosure wall uses waterproof leaking stoppage structure.
Background
With the rapid advance of social economy, the urban infrastructure is greatly developed, and the subway engineering is being constructed on a large scale. The subway auxiliary foundation pit is generally buried about 10m deep, and the SMW construction method has the advantages of good pile economy, high construction speed and convenience in operation, and becomes the first choice for auxiliary enclosure construction in non-rock stratum areas. However, construction operation is inevitable and has quality defects, and the part of the enclosure structure has water seepage and even soil seepage risks in the excavation stage, so that the foundation pit safety is seriously threatened.
In view of the above, how to seal the leakage position is an urgent problem to be solved by technicians in the industry.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cooperation SMW worker method stake enclosure wall uses waterproof leaking stoppage structure. The waterproof leaking stoppage structure adopts the design of welding the plugging steel plates on the outer waterproof curtain and the piles in the SMW construction method, and forms a common protection system with the existing SMW construction method pile enclosure wall to plug and protect the leakage position of the SMW construction method pile enclosure wall.
In order to achieve the above object, the present invention provides the following technical solutions:
a waterproof leakage stoppage structure matched with an SMW construction method pile retaining wall is arranged at the edge of a foundation pit, and comprises an outer waterproof curtain, wherein the outer waterproof curtain is arranged outside the foundation pit and formed by sequentially overlapping a plurality of outer waterproof stirring piles; and the outer waterproof curtain is arranged at the leakage position of the pile enclosure wall in the SMW construction method and used for plugging and protecting leakage.
Further, in the waterproof leakage blocking structure, the retaining wall of the SMW construction method pile comprises a retaining wall body and section steel, wherein the retaining wall body is formed by sequentially overlapping a plurality of cement-soil mixing piles, and a plurality of the section steel are arranged in the plurality of cement-soil mixing piles at intervals; the waterproof leakage stoppage structure further comprises a plurality of plugging steel plates arranged at the leakage position, the plugging steel plates are sequentially arranged along the height direction and the length direction of the SMW construction method pile enclosure wall respectively, two ends of each plugging steel plate are connected with two adjacent section steels respectively, and the plugging steel plates are connected to the section steels close to the surface of one side of the foundation pit.
Further, in the above waterproof leakage blocking structure, the blocking steel plate is welded to the section steel.
Further, in the above waterproof leakage blocking structure, the blocking steel plate is composed of a base body and protrusions arranged at the left end and the right end of the base body, the base body is of a rectangular structure, the two protrusions are respectively arranged in the middle of the left end and the right end of the base body, and the ends of the protrusions and the end of the base body, which are provided with the protrusions, are connected to the surface of the profile steel, which is close to one side of the foundation pit.
Further, in the waterproof leakage-stopping structure, the blocking steel plate is made of Q235-B steel, and the thickness of the blocking steel plate is 16-20 mm.
Further, in the waterproof leakage blocking structure, a center distance between the SMW method pile enclosure wall and the outer waterproof curtain is 1000mm to 1100mm, and preferably, a center distance between the SMW method pile enclosure wall and the outer waterproof curtain is 1050 mm.
Further, in the waterproof leakage-stopping structure, the section steel is H-shaped steel.
Further, in the waterproof leakage-stopping structure, the vertical distance between the bottom end of the outer-layer water-stopping mixing pile and the lower end of the leakage position of the SMW construction method pile enclosure wall is more than or equal to 3 meters.
The analysis can know, the utility model discloses a waterproof leaking stoppage structure that cooperation SMW worker method stake enclosure wall used, the utility model discloses a design of welding shutoff steel sheet on outer stagnant water curtain + SMW worker method stake, this waterproof leaking stoppage structure and the common protection system of existing SMW worker method stake enclosure wall formation carry out the shutoff protection to the seepage position of SMW worker method stake enclosure wall. The waterproof leaking stoppage structure has the advantages of simple structure system, high construction speed, multiple protection and the like. The utility model discloses simple ingenious, effectively solved the seepage problem of adopting SMW worker method stake enclosure wall's foundation ditch in the excavation stage, made big contribution for the development of the subway engineering of china.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:
fig. 1 is a schematic top view of an embodiment of the present invention.
Fig. 2 is a schematic front view of an embodiment of the present invention.
Fig. 3 is a left side view schematically illustrating an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a plugging steel plate according to an embodiment of the present invention.
Fig. 5 is a schematic structural view of the section steel according to an embodiment of the present invention.
Description of reference numerals: 1-outer water stop stirring pile; 2-cement soil mixing pile; 3-section steel; 4-wing plate; 5-a web; 6-blocking the steel plate; 7-bulge;
d1-center distance of the outer water stop stirring pile; d2-spacing of the sections; d3-the center distance between the outer water stop mixing pile and the cement mixing pile; d4-the distance between the outer water stop mixing pile and the cement mixing pile;
hf-fillet size of the fillet weld; r1-diameter of the outer layer water stop stirring pile;
l1-length of the matrix of the plugging steel plate; w1-width of the matrix of the plugging steel plate;
l2-length of the bulge of the plugging steel plate; w2-width of the projection of the plugging steel plate;
the width of the web of the W3-H steel +2 XT 2; the thickness of a web of T1-H section steel;
w4-width of wing plate of H-shaped steel; thickness of the wing plate of the T2-H shaped steel;
d5-blocking the vertical distance between the end part of the steel plate protrusion and the edge of the section steel;
d6-vertical distance between the ends of two adjacent plugging steel plate protrusions on the same horizontal plane.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Each example is provided by way of explanation of the invention and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.
In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected", "connected" and "disposed" used in the present invention should be understood in a broad sense, and may be, for example, either fixedly connected or detachably connected; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
As shown in fig. 1 to 5, according to the embodiment of the utility model, a waterproof leaking stoppage structure that cooperation SMW (soil mix wall) worker method pile enclosure wall used is provided, SMW worker method pile enclosure wall sets up at the foundation ditch edge, waterproof leaking stoppage structure includes outer stagnant water curtain, SMW worker method pile enclosure wall and outer stagnant water curtain all set up outside the foundation ditch, outer stagnant water curtain is formed by a plurality of outer stagnant water stirring stake 1 overlap joints in proper order, namely a plurality of outer stagnant water stirring stake 1 forms a continuous stagnant water wall body, the overlap joint mode can be two adjacent outer stagnant water stirring stake 1 interlock each other, in other words, an outer stagnant water stirring stake 1 imbeds in another outer stagnant water stirring stake 1. Compared with the SMW construction method pile enclosure wall and the outer waterproof curtain, the outer waterproof curtain is further away from the foundation pit; the position relation from inside to outside is as follows: foundation pit, SMW worker method stake enclosure wall, outer waterproof curtain. And the outer waterproof curtain is arranged at the leakage position of the pile enclosure wall in the SMW construction method and used for plugging and protecting leakage. The outer water stop mixing pile 1 can be a cement mixing pile 2.
Further, the center distance between the SMW method pile enclosure wall and the outer waterproof curtain is 1000-1100 mm, and preferably, the center distance between the SMW method pile enclosure wall and the outer waterproof curtain is 1050 mm. The diameter of each outer-layer water stopping stirring pile 1 is 850mm, and the center distance between every two adjacent outer-layer water stopping stirring piles 1 is 600 mm. Two parameters, namely the diameter of the outer-layer water-stopping stirring pile 1 is 850mm, and the center distance of two adjacent outer-layer water-stopping stirring piles 1 is 600mm, are the operation sizes of construction conventional machinery and are fixed values. The central distance between the SMW method pile enclosure wall and the outer waterproof curtain takes the verticality deviation and the bulge of the SMW method pile enclosure wall into consideration, and in order to achieve a better waterproof effect, the outer waterproof curtain needs to be close to the SMW method pile enclosure wall as much as possible, so that the central distance between the SMW method pile enclosure wall and the outer waterproof curtain is controlled to be 1000 mm-1100 mm, and is preferably 1050 mm.
Furthermore, the vertical distance between the lower end of the outer water stopping stirring pile 1 and the lower end of the leakage position of the pile enclosure wall in the SMW construction method is more than or equal to 3 meters. The lower end of the outer-layer water-stopping stirring pile 1 is lower than the lower end of the leakage position of the pile enclosure wall in the SMW construction method by more than 3 meters so as to ensure that the water-stopping effect of the outer-layer water-stopping stirring pile 1 is more sufficient.
Further, the SMW construction method pile retaining wall comprises a retaining wall body and section steel 3, wherein the retaining wall body is formed by sequentially overlapping a plurality of cement mixing piles 2, the plurality of section steel 3 are arranged in the plurality of cement mixing piles 2 at intervals, namely, one section steel 3 is arranged in each cement mixing pile 2 in the plurality of cement mixing piles 2 at intervals.
Specifically, the H-shaped steel 3 comprises a web 5 and wing plates 4 symmetrically connected to two sides of the web 5, the wing plates 4 are perpendicular to the web 5, the width of the web 5 is 652mm, the thickness of the web 5 is 13mm, and the width of the wing plates 4 is 300mm, and the thickness of the wing plates is 24 mm. The web 5 of each H-shaped steel 3 is perpendicular to the connecting line of the centers of the plurality of cement soil mixing piles 2.
The waterproof leaking stoppage structure further comprises plugging steel plates 6 arranged at the leaking position, the plugging steel plates 6 are made of Q235-B steel, the thickness of each plugging steel plate 6 is 16-20 mm, a plurality of plugging steel plates 6 are arranged in an array mode, namely the plugging steel plates 6 are sequentially arranged along the height direction and the length direction of the SMW construction method pile enclosure wall respectively, two ends of each steel plate are connected with two adjacent steel sections 3 respectively, the plugging steel plates 6 are connected to the surface of one side, close to the foundation pit, of each steel section 3, and the plugging steel plates 6 are connected to wing plates 4, close to one side of the foundation pit, of each steel section 3. The attachment means may be a fillet weld.
Further, the plugging steel plate 6 comprises a base body and protrusions 7 arranged at the left end and the right end of the base body, the base body is of a rectangular structure, the two protrusions 7 are respectively arranged in the middle of the left end and the right end of the base body, and the protrusions 7 and the end portion, provided with the protrusions 7, of the base body are both connected to the surface, close to one side of the foundation pit, of the section steel 3. Protruding 7 overlaps with shaped steel 3 with the tip that is provided with this arch 7, so make two protruding 7's the maximize increase welding seam length of setting up, can improve bending resistance, the anti-shear bearing capacity of steel sheet welding seam. As shown in fig. 2, the left end of the base and the edge of the projection 7 provided on the left end are both connected to the front side of the wing plate 4 of the section steel 3, and the right end of the base and the edge of the projection 7 provided on the right end are both connected to the front side of the wing plate 4 of the section steel 3.
Specifically, at the leakage position of the SMW construction method pile retaining wall, a plurality of plugging steel plates 6 are sequentially arranged in the middle of every two adjacent H-shaped steels 3 from top to bottom, and two end parts of a base body of each plugging steel plate 6 and protrusions 7 at the left end part and the right end part of the base body are respectively connected with the H-shaped steels 3 at two sides through welding. And a plugging steel plate 6 is expanded from the upper part, the lower part, the left part and the right part of the leakage position. The vertical distance between the top end of the uppermost plugging steel plate 6 and the upper end of the leakage position is not less than 0.5 m, the vertical distance between the left end of the leftmost plugging steel plate 6 and the left end of the leakage position is not less than 1.15 m, the vertical distance between the bottom end of the lowermost plugging steel plate 6 and the lower end of the leakage position is not less than 0.5 m, and the vertical distance between the right end of the rightmost plugging steel plate 6 and the right end of the leakage position is not less than 1.15 m. The vertical distance is limited, so that the leakage stoppage effect can be ensured on the basis of considering the cost.
The size, the interval, the size of the section steel 3 and the like of the mixing piles, which are not limited in the above contents, are all models and sizes which are commonly used for construction operation.
The method for constructing the waterproof and leaking stoppage structure comprises the following steps:
1) plugging the leakage position of the pile enclosure wall in the SMW construction method by using a sand bag;
2) after the step 1) is finished, constructing an outer-layer water-stopping stirring pile 1 outside one side of the SMW construction method pile enclosure wall far away from the foundation pit to form an outer-layer water-stopping curtain, wherein the lower end of the outer-layer water-stopping stirring pile 1 is controlled to be 3m below the lower end of the leakage position;
3) after the step 2) is finished, removing the sandbags blocked in the step 1) after the outer water stopping stirring pile 1 reaches the design strength (unconfined compressive strength is not less than 0.8MPa), and chiseling cement soil on the surface layer of the section steel 3 of the pile enclosure wall in the SMW construction method;
4) and cleaning the surface of the section steel 3 at one side, close to the foundation pit, of the leakage position of the SMW construction method pile retaining wall in a mechanical cleaning mode to enable the surface of the section steel 3 to meet the welding requirement, and then welding two ends of a plurality of plugging steel plates 6 with two adjacent section steels 3 respectively.
The mechanical cleaning mode is that firstly, the surface of the section steel 3 is subjected to sand blasting or shot blasting, and then the surface of the section steel 3 is subjected to polishing treatment;
the welding rod used for welding the plugging steel plate 6 and the section steel 3 is an E43XX welding rod (a welding rod with the tensile strength of 430MPa series), and when the plugging steel plate 6 is welded, the leg size h of a fillet weldfThe thickness of the plugging steel plate 6 is 0.8-1.2 t, wherein t is the thickness of the plugging steel plate 6 and the unit is mm.
Example 1
In this embodiment, the method for constructing the waterproof and leaking stoppage structure includes the following steps:
1) plugging the leakage position of the pile enclosure wall in the SMW construction method by using a sand bag;
2) after the step 1) is finished, constructing an outer-layer water-stopping stirring pile 1 outside one side of the SMW construction method pile enclosure wall far away from the foundation pit, wherein the depth of the outer-layer water-stopping stirring pile 1 is controlled to be 3m below a leakage position;
3) after the step 2) is finished, removing the sandbags blocked in the step 1) after the outer water stopping mixing pile 1 reaches the designed strength, and chiseling cement soil on the surface layer of the section steel 3;
4) and cleaning the surface of the section steel 3 at one side, close to the foundation pit, of the leakage position of the pile enclosure wall in the SMW construction method by adopting mechanical cleaning modes such as sand blasting, shot blasting, polishing and the like to ensure that the surface of the section steel 3 meets the welding requirement, and then respectively welding a plurality of plugging steel plates 6 with the section steel 3.
The welding rod used for welding the plugging steel plate 6 and the section steel 3 is an E43XX welding rod, and when the plugging steel plate 6 is welded, the fillet size h of a fillet weldfThe thickness of the plugging steel plate 6 is 18mm, and the thickness of the plugging steel plate 6 is 18 mm.
The parameters of the waterproof leakage blocking structure in this embodiment are:
the diameter R1 of the outer layer water stop stirring pile 1 is 850 mm;
the center distance D1 of the outer-layer water-stopping stirring pile 1 is 600 mm;
the distance D2 between the section steels 3 is 1200 mm;
the center distance D3 between the outer water stop mixing pile 1 and the cement soil mixing pile 2 is 1050 mm;
the distance D4 between the outer water stop mixing pile 1 and the cement soil mixing pile 2 is 200 mm;
the vertical distance D5 between the end part of the bulge 7 of the plugging steel plate 6 and the edge of the section steel 3 is 125 mm;
the vertical distance D6 between the ends of the protrusions 7 of two adjacent plugging steel plates 6 on the same horizontal plane is 50 mm;
the length L1 of the basal body of the plugging steel plate 6 is 1000mm, and the width W1 is 500 mm;
the length L2 of the bulge 7 of the plugging steel plate 6 is 200mm, and the width W2 is 75 mm;
the width +2 × T2 of the web 5 of the H-section steel 3 is 700mm in W3 and 13mm in thickness T1;
the width W4 of the wing plate 4 of the H-shaped steel 3 is 300mm, and the thickness T2 is 24 mm.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:
the utility model discloses a design of welding shutoff steel sheet 6 on outer stagnant water curtain + SMW worker method stake, this waterproof leaking stoppage structure and the common protection system of existing SMW worker method stake enclosure wall formation carry out the shutoff protection to the seepage position of SMW worker method stake enclosure wall. The waterproof leaking stoppage structure has the advantages of simple structure system, high construction speed, multiple protection and the like. The utility model discloses simple ingenious, effectively solved the seepage problem of adopting SMW worker method stake enclosure wall's foundation ditch in the excavation stage, made big contribution for the development of the subway engineering of china.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A waterproof and leakage-stopping structure matched with an SMW construction method pile retaining wall is arranged at the edge of a foundation pit and is characterized in that,
the waterproof leaking stoppage structure comprises an outer waterproof curtain, the outer waterproof curtain is arranged outside a foundation pit and formed by sequentially overlapping a plurality of outer waterproof stirring piles, and compared with the SMW construction method pile enclosure wall, the outer waterproof curtain is farther away from the foundation pit;
and the outer waterproof curtain is arranged at the leakage position of the pile enclosure wall in the SMW construction method and used for plugging and protecting leakage.
2. The waterproof leak stoppage structure according to claim 1,
the SMW construction method pile retaining wall comprises a retaining wall body and profile steel, wherein the retaining wall body is formed by sequentially overlapping a plurality of cement mixing piles, and a plurality of the profile steel are arranged in the plurality of cement mixing piles at intervals;
the waterproof leakage stoppage structure further comprises a plurality of plugging steel plates arranged at the leakage position, the plugging steel plates are sequentially arranged along the height direction and the length direction of the SMW construction method pile enclosure wall respectively, two ends of each plugging steel plate are connected with two adjacent section steels respectively, and the plugging steel plates are connected to the section steels close to the surface of one side of the foundation pit.
3. The waterproof leaking stoppage structure according to claim 2,
the plugging steel plate is connected with the section steel in a welding mode.
4. The waterproof leaking stoppage structure according to claim 2,
the plugging steel plate is composed of a base body and bulges arranged at the left end and the right end of the base body, the base body is of a rectangular structure, the two bulges are respectively arranged in the middle of the left end and the right end of the base body, and the bulges and the base body are provided with the end parts of the bulges which are connected to the structural steel and are close to the surface of one side of the foundation pit.
5. The waterproof leaking stoppage structure according to claim 2,
the plugging steel plate is Q235-B steel, and the thickness of the plugging steel plate is 16-20 mm.
6. The waterproof leak stoppage structure according to claim 1,
the center distance between the SMW construction method pile enclosure wall and the outer waterproof curtain is 1000-1100 mm.
7. The waterproof and leak-stopping structure according to claim 6, wherein the center distance between the SMW process pile retaining wall and the outer waterproof curtain is 1050 mm.
8. The waterproof leaking stoppage structure according to claim 2,
the section steel is H-shaped steel.
9. The waterproof leak stoppage structure according to claim 1,
the vertical distance between the bottom end of the outer water stop stirring pile and the lower end of the leakage position of the pile enclosure wall constructed by the SMW construction method is more than or equal to 3 meters.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110485451A (en) * | 2019-09-06 | 2019-11-22 | 广州地铁设计研究院股份有限公司 | The waterproofing and leakage-stopping structure and construction method that cooperation SMW engineering method stake enclosure wall uses |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110485451A (en) * | 2019-09-06 | 2019-11-22 | 广州地铁设计研究院股份有限公司 | The waterproofing and leakage-stopping structure and construction method that cooperation SMW engineering method stake enclosure wall uses |
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