CN214993890U - A utility tunnel excavation supporting construction for morals and manners stratum area - Google Patents
A utility tunnel excavation supporting construction for morals and manners stratum area Download PDFInfo
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- CN214993890U CN214993890U CN202120336698.XU CN202120336698U CN214993890U CN 214993890 U CN214993890 U CN 214993890U CN 202120336698 U CN202120336698 U CN 202120336698U CN 214993890 U CN214993890 U CN 214993890U
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Abstract
The utility model belongs to the technical field of the excavation supporting, a utility tunnel excavation supporting construction for morals and manners rock stratum area is disclosed, adopt the unable embedding of steel sheet pile fixed and adopt the campshed to need to construct precipitation well or stagnant water curtain alone and the high problem of construction cost who leads to in order to solve at the foundation ditch in morals and manners rock stratum area. The utility model discloses a bored concrete pile that a plurality of intervals of embedding in the stratum set up, the upper end face of bored concrete pile is pour and is used for linking each bored concrete pile together crown beam, the both sides of the direction that the bored concrete pile was arranged along the bored concrete pile have inserted fixed steel sheet pile, are in the same place through retrieving steel sheet pile interconnect between the fixed steel sheet pile on the adjacent bored concrete pile, the degree of depth that the bored concrete pile buried in the stratum is greater than fixed steel sheet pile and retrieves the degree of depth that the steel sheet pile buried in the stratum.
Description
Technical Field
The utility model belongs to the technical field of the excavation supporting, concretely relates to utility tunnel excavation supporting construction for morals and manners rock stratum area.
Background
The steel sheet pile is used as a section for manufacturing foundation pit support, has the advantages of high strength, light weight, good water resistance, long service life, high safety, low requirement on space, obvious environment-friendly effect and the like, and also has the characteristics of simple construction, short construction period and the like. In the aspect of permanent structures, the building block can be used for wharfs, retaining walls, flood banks and the like; in the aspect of temporary structures, the construction method can be used for preventing flood and cutting off, building bridges and cofferdams, and retaining water and retaining walls in municipal infrastructure engineering and the like.
Although the steel sheet pile has the characteristics of quick construction, good water stopping effect and capability of recycling the steel sheet pile, the steel sheet pile cannot be embedded and fixed in a weathered rock stratum.
The row piles are foundation pit supporting structures formed by arranging certain pile types in a queue type, and the most common pile type reinforced concrete bored piles and precast piles are arranged in a queue type. The row pile has the characteristics of high supporting stability, but when the row pile is supported by sampling, independent precipitation or a construction waterproof curtain is needed, so that the construction period is long, and the construction cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the problem that the construction cost that adopts the unable embedding of steel sheet pile fixed and adopt the campshed to need to construct precipitation well or stagnant water curtain alone and lead to is high in the foundation ditch in morals and manners stratum area, and provide a utility tunnel underground structure for morals and manners stratum area, have that the construction is swift, the effectual characteristics of stagnant water, no longer set up precipitation well or stagnant water curtain alone simultaneously, can also retrieve partial steel sheet pile to reduce the cycle of construction, practice thrift construction cost.
For solving the technical problem, the utility model discloses the technical scheme who adopts is:
the utility model provides a utility tunnel underground structure for morals and manners stratum area, its characterized in that, including the bored concrete pile that a plurality of intervals of embedding in the stratum set up, the upper end face of bored concrete pile is pour and is used for linking together the crown beam with each bored concrete pile, the both sides of the direction that the bored concrete pile was arranged along the bored concrete pile have inserted fixed steel sheet pile, and through retrieving steel sheet pile interconnect together between the fixed steel sheet pile on the adjacent bored concrete pile, the degree of depth that the bored concrete pile was buried in the stratum is greater than the degree of depth that fixed steel sheet pile and retrieved steel sheet pile buried in the stratum.
In some embodiments, an inner support for supporting the foundation pit is connected to the crown beam.
In some embodiments, a catch basin is provided in the ground on the side of the cast-in-place pile remote from the foundation pit.
In some embodiments, the fixed steel sheet pile comprises a fixed portion for inserting concrete into the cast-in-place pile and a connecting portion for connecting with the recovered steel sheet pile, the fixed portion comprises a first fixing plate in the shape of an elongated plate, one side of the first fixing plate is inserted into the cast-in-place pile, the other side of the first fixing plate extends out of the cast-in-place pile and is connected with the connecting portion, and the upper end of the first fixing plate is connected with a connecting plate for connecting the fixed steel sheet piles at two sides of the cast-in-place pile into a whole.
In some embodiments, the connecting plate is an arc-shaped plate, and the front side and the rear side of the first fixing plate are respectively connected with an arc-shaped plate, so that the arc-shaped plates on the two sides of the cast-in-place pile form an annular protection ring covering the periphery of the cast-in-place pile.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a utility tunnel underground structure for weathering rock stratum area in the use, the campshed that utilizes the bored concrete pile to form can play good stable supporting role, utilizes the steel sheet pile can enough play excavation supporting's effect simultaneously, has the effect of stagnant water curtain again simultaneously to solved in the unable fixed problem of embedding of weathering rock stratum area steel sheet pile, also can improve the stability of weathering rock stratum area deep basal pit support simultaneously. The method is particularly suitable for supporting the deep foundation pit in the weathered rock stratum area.
The utility model discloses in the use, can also carry out recycle to the steel sheet pile between the bored concrete pile to reach resources are saved and reduce the cost of morals and manners rock stratum area excavation supporting.
Simultaneously the utility model discloses in the use, also no longer need set up precipitation well or stagnant water curtain alone, can further reduce excavation supporting's cost.
Drawings
Fig. 1 is a schematic top view of an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a position in fig. 1, showing a schematic view of recovered steel sheet piles extending into the ground between the cast-in-place piles;
FIG. 3 is a schematic cross-sectional view of another location of the pile illustrating the pile extending into the formation;
fig. 4 is a schematic structural view of an embodiment of the present invention when the cast-in-place pile is connected with the fixed steel sheet pile and the recovered steel sheet pile;
fig. 5 is a schematic structural view of another embodiment of the fixed steel sheet pile of the present invention;
the labels in the figure are: 1. the method comprises the following steps of pouring piles, 2, crown beams, 3, steel sheet piles, 31, fixed steel sheet piles, 311, fixing parts, 312, connecting parts, 314, first fixing plates, 315, connecting plates, 32, recovered steel sheet piles, 4, inner supports, 5 and a water collecting tank.
Detailed Description
The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, other embodiments used by those skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Combine the attached drawing, the utility model discloses a utility tunnel underground structure for morals and manners rock stratum area, bored concrete pile 1 including embedding a plurality of intervals settings in the stratum, the crown beam 2 that is used for linking together each bored concrete pile 1 is pour to the up end of bored concrete pile 1, bored concrete pile 1 has inserted fixed steel sheet pile 31 along the both sides of the direction that bored concrete pile 1 arranged, is in the same place through retrieving steel sheet pile 32 interconnect between the fixed steel sheet pile 31 on the adjacent bored concrete pile 1, the degree of depth that bored concrete pile 1 buryed in the stratum is greater than the degree of depth that fixed steel sheet pile 31 and retrieve steel sheet pile 32 and bury in the stratum. Wherein the fixed steel sheet piles and the recovered steel sheet piles 32 together form the steel sheet piles 3. Wherein, the utility model discloses an insert fixed steel sheet pile 31 and squeeze into in bored concrete pile 1 fixed steel sheet pile 31 when concrete has not solidified after 1 bored concrete pile concreted.
When the fixed steel sheet pile 31 is driven into the cast-in-place pile 1, the fixed steel sheet pile 31 does not contact the reinforcement cage of the cast-in-place pile 1.
Here, the fixed steel sheet pile 31 described in the present invention is a part that can be fixed in the cast-in-place pile 1, and the recovered steel sheet pile 32 is a steel sheet pile that can be recovered after use. Essentially, both the fixed steel sheet piles 31 and the recycled steel sheet piles 32 are steel sheet piles, and the present invention is only for the purpose of distinction and description.
Referring to fig. 4, in some embodiments, both the fixed steel sheet pile 31 and the recycled steel sheet pile 32 are larsen steel sheet piles, and the fixed steel sheet pile 31 is a half-width larsen steel sheet pile, that is, a larsen steel sheet pile is cut from the middle to form two parts, and the cut larsen steel sheet piles are respectively inserted into two sides of the cast-in-place pile.
In some embodiments, an inner support 4 for supporting a foundation pit is connected to the crown beam 2, wherein the inner support 4 may be formed by pouring reinforced concrete, and the inner support 4 may also be a steel pipe inner support. During specific construction, constructors can select according to actual conditions.
In some embodiments, the ground surface of the side of the cast-in-place pile 1 far away from the foundation pit is provided with the water collecting tank 5, and by arranging the water collecting tank 5, the water flow is convenient to collect and discharge, and the surface water (such as rainwater and the like) is prevented from being immersed into the excavated foundation pit.
Wherein, in the course of foundation ditch excavation, also can set up catch basin 5 in the both sides of foundation ditch, collect catchmenting and utilize the pump to discharge to guarantee the interior drying of foundation ditch, guarantee construction safety.
Referring to fig. 5, in some embodiments, the fixing steel sheet pile 31 includes a fixing portion 311 for inserting concrete into the cast-in-place pile 1 and a connecting portion 312 for connecting with the recovery steel sheet pile 32, where the fixing portion 311 includes a first fixing plate 313 having an elongated plate shape, one side of the first fixing plate 313 is inserted into the cast-in-place pile 1, the other side of the first fixing plate 313 extends out of the cast-in-place pile 1 and is connected with the connecting portion 312, and an upper end of the first fixing plate 313 is connected with a connecting plate 314, and the connecting plate 314 is used for connecting the fixing steel sheet piles 31 at two sides of the cast-in-place pile 1 to form a whole. The utility model discloses a fixed part 311 is connected the fixed steel sheet pile 31 of bored concrete pile 1 both sides as a whole, is convenient for insert bored concrete pile 1 with fixed part 311, also can play certain guide effect simultaneously, places the condition that fixed steel sheet pile 31 appears the slope in inserting bored concrete pile 1.
In some embodiments, the connecting plate 314 is an arc-shaped plate, and the front side and the rear side of the first fixing plate 313 are respectively connected with an arc-shaped plate, so that the arc-shaped plates at the two sides of the cast-in-place pile 1 form an annular protection ring coated on the periphery of the cast-in-place pile, thereby improving the stability of the connection between the fixed steel sheet pile 31 and the cast-in-place pile 1, improving the stress after the connection between the fixed steel sheet pile 31 and the recycled steel sheet pile 32, and preventing the insertion part of the fixed steel sheet pile 31 and the cast-in-place pile 1 from being damaged due to the uneven pressure of the stratum.
The utility model discloses a construction flow is:
(1) forming a hole in the weathered rock layer by rotary drilling;
(2) a reinforcement cage is arranged below the pile hole;
(3) then concrete is poured;
(4) before the concrete is solidified, driving fixed steel sheet piles into two sides of the cast-in-place pile;
(5) driving a recovery steel sheet pile between adjacent cast-in-place piles, and connecting the recovery steel sheet pile adjacent to the fixed steel sheet pile with the fixed steel sheet pile;
(6) constructing a crown beam (and constructing an inner support on the crown beam if needed);
(7) excavating the earthwork of the foundation pit and forming the foundation pit;
(8) and backfilling the foundation pit, and recovering the steel sheet piles.
The utility model discloses a utility tunnel underground structure for weathering rock stratum area in the use, the campshed that utilizes the bored concrete pile to form can play good stable supporting role, utilizes the steel sheet pile can enough play excavation supporting's effect simultaneously, has the effect of stagnant water curtain again simultaneously to solved in the unable fixed problem of embedding of weathering rock stratum area steel sheet pile, also can improve the stability of weathering rock stratum area deep basal pit support simultaneously. The method is particularly suitable for supporting the deep foundation pit in the weathered rock stratum area.
The utility model discloses in the use, can also carry out recycle to the steel sheet pile between the bored concrete pile to reach resources are saved and reduce the cost of morals and manners rock stratum area excavation supporting.
Simultaneously the utility model discloses in the use, also no longer need set up precipitation well or stagnant water curtain alone, can further reduce excavation supporting's cost.
Claims (5)
1. The utility model provides a utility tunnel underground structure for morals and manners stratum area, its characterized in that, including the bored concrete pile that a plurality of intervals of embedding in the stratum set up, the upper end face of bored concrete pile is pour and is used for linking together the crown beam with each bored concrete pile, the both sides of the direction that the bored concrete pile was arranged along the bored concrete pile have inserted fixed steel sheet pile, and through retrieving steel sheet pile interconnect together between the fixed steel sheet pile on the adjacent bored concrete pile, the degree of depth that the bored concrete pile was buried in the stratum is greater than the degree of depth that fixed steel sheet pile and retrieved steel sheet pile buried in the stratum.
2. The utility tunnel foundation pit supporting structure for weathered rock areas of claim 1, wherein an inner support for supporting a foundation pit is connected to the crown beam.
3. The utility tunnel excavation supporting structure for weathered rock areas of claim 1, wherein a sump is provided on the ground away from the cast-in-place pile side of the excavation.
4. The utility tunnel foundation pit supporting structure for weathered rock areas is characterized in that the fixing steel sheet pile comprises a fixing part for inserting concrete into a cast-in-place pile and a connecting part for connecting with a recovery steel sheet pile, the fixing part comprises a first fixing plate in the shape of an elongated plate, one side of the first fixing plate is inserted into the cast-in-place pile, the other side of the first fixing plate extends out of the cast-in-place pile and is connected with the connecting part in an interconnecting mode, and the upper end of the first fixing plate is connected with a connecting plate which is used for connecting the fixing steel sheet piles on two sides of the cast-in-place pile into a whole.
5. The utility tunnel foundation pit supporting structure for weathered rock areas according to claim 4, wherein the connecting plates are arc-shaped plates, and the front side and the rear side of the first fixing plate are respectively connected with an arc-shaped plate, so that the arc-shaped plates on the two sides of the cast-in-place pile form an annular protection ring coated on the periphery of the cast-in-place pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120336698.XU CN214993890U (en) | 2021-02-06 | 2021-02-06 | A utility tunnel excavation supporting construction for morals and manners stratum area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120336698.XU CN214993890U (en) | 2021-02-06 | 2021-02-06 | A utility tunnel excavation supporting construction for morals and manners stratum area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214993890U true CN214993890U (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120336698.XU Active CN214993890U (en) | 2021-02-06 | 2021-02-06 | A utility tunnel excavation supporting construction for morals and manners stratum area |
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| Country | Link |
|---|---|
| CN (1) | CN214993890U (en) |
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2021
- 2021-02-06 CN CN202120336698.XU patent/CN214993890U/en active Active
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