CN219261048U - Working well - Google Patents

Abstract

The utility model discloses a working well, which relates to the technical field of underground diaphragm wall construction, and comprises a working well body, wherein a plurality of layers of first supporting members are arranged between two adjacent side well walls of the working well body, the first supporting members are sequentially arranged from top to bottom, a second supporting member is arranged at a position, close to the top, of the working well body, the second supporting member is folded into a ring along the circumferential direction of the well wall of the working well body, an installation base for installing a pushing device is further arranged on the well wall of the working well body, a notch is formed in the well wall, opposite to the installation base, of the working well body, a steel structure sleeve for assisting pushing out of the well from the diaphragm wall top is arranged on the notch, a base plate is arranged at the bottom of the working well body, and a sliding rail structure for assisting pushing out of the well from the diaphragm wall top is arranged on the base plate. The working well provided by the embodiment of the utility model can be used for pushing construction of the assembled continuous wall and cast-in-place construction of the end part of the assembled continuous wall after the pushing is finished.

Description

Working well

Technical Field

The utility model relates to the technical field of underground diaphragm wall construction, in particular to a working well.

Background

At present, a large-scale working well is mainly used for municipal tunnel or subway construction, and is generally constructed by adopting a cast-in-situ underground continuous wall or a secant pile as a supporting mode, then excavating and horizontally supporting, and finally carrying out structural construction. The underground diaphragm wall mainly adopts a cast-in-place concrete construction process, so that the prior art does not have a working well for the underground diaphragm wall constructed by a cast-in-place method, and is more suitable for the construction of the assembled underground diaphragm wall.

Disclosure of Invention

The present utility model aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, the working well provided by the embodiment of the utility model can be used for pushing construction of the assembled continuous wall and cast-in-situ construction of the end part of the assembled continuous wall after the pushing is finished, and the construction efficiency of the assembled continuous wall is effectively saved.

According to the working well provided by the embodiment of the utility model, the working well comprises a working well body, a plurality of layers of first supporting members are arranged between two adjacent side well walls of the working well body, the layers of first supporting members are sequentially arranged from top to bottom, a second supporting member is arranged at a position, close to the top, of the working well body, the second supporting member is folded into a ring along the circumferential direction of the well wall of the working well body, a mounting base for mounting a pushing device is further arranged on the well wall of the working well body, a notch is formed in the well wall of the working well body opposite to the mounting base, a steel structure sleeve for assisting pushing out of the well by the continuous wall top is arranged in the notch, a base plate is arranged at the bottom of the working well body, and a sliding rail structure for assisting pushing out of the well by the continuous wall top is arranged on the base plate.

The working well has at least the following beneficial effects: at present, the original continuous wall construction mode can not be used for the construction of an assembled continuous wall, the horizontal pushing construction of the assembled continuous wall can be realized by adopting a pushing method, and the cast-in-situ butt joint construction of the end part of the assembled continuous wall can be realized after the pushing construction is finished, so that the problem of difficult construction of the existing assembled continuous wall is effectively solved. Wherein, the setting of first support member can improve the overall rigidity of working well body, avoids the oversized problem that leads to outside side force to drive the working well body deformation or damage of working well body, and the setting of second support member can solve the unstable, uneven problem of atress of working well body structure that leads to because of setting up notch and steel construction cover.

According to the working well provided by the embodiment of the utility model, the section of the working well body is rectangular, the mounting bases are arranged on the side walls of the working well body, the side walls of the working well body are adjacent, and the thickness of the mounting bases is equal to the thickness of the side walls of the working well body.

According to the working well provided by the embodiment of the utility model, the top of the working well body is 0.5m higher than the ground.

According to the working well provided by the embodiment of the utility model, the outer side of the working well body is provided with the high-pressure jet grouting pile close to the steel structure sleeve.

According to the working well provided by the embodiment of the utility model, a plurality of layers of detachable opposite bracing structures are arranged between the steel structure sleeve and the mounting base.

According to the working well provided by the embodiment of the utility model, the opposite supporting structure is made of one of profile steel, steel pipes and concrete.

According to the working well provided by the embodiment of the utility model, the waterproof structure is arranged at one end of the steel structure sleeve in the working well body.

According to the working well provided by the embodiment of the utility model, the waterproof structure comprises the fastening column, the fastening piece and the waterproof piece, wherein the fastening column is fixedly connected with the steel structure sleeve, the waterproof piece is sleeved on the fastening column, the fastening piece is in threaded connection with the fastening column, and the fastening piece presses the waterproof piece against the steel structure sleeve.

According to the working well provided by the embodiment of the utility model, the waterproof piece is made of rubber, and the end part of the waterproof piece extends towards the center of the notch.

According to the working well provided by the embodiment of the utility model, the sliding rail structure comprises the sliding groove and the steel balls, the section of the sliding groove is U-shaped, and the steel balls are paved in the sliding groove.

Drawings

The utility model is further described below with reference to the drawings and examples;

FIG. 1 is a schematic diagram of a first embodiment of the present utility model;

FIG. 2 is a second schematic diagram of an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a third embodiment of the present utility model;

FIG. 4 is a schematic diagram of a fourth embodiment of the present utility model;

FIG. 5 is a schematic diagram of a fifth embodiment of the present utility model;

FIG. 6 is a schematic view of the construction of a fabricated continuous wall;

FIG. 7 is a schematic view of a steel jacket structure in accordance with an embodiment of the present utility model;

fig. 8 is an enlarged schematic view at a in fig. 7.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

The middle and small-sized working well is mainly used for water supply and drainage construction, such as pipe jacking or pipeline connection, and generally adopts a sunk well or a form of re-constructing the working well in the sunk well. The open caisson construction mainly adopts a reverse construction method or an open caisson method. The reverse method is mainly applicable to dry operation open caissons, namely under the condition that foundation pits have no underground water or little underground water, the open caissons are excavated from top to bottom, and each time an open caisson is excavated, one open caisson is made. The open caisson method is to excavate soil in the open caisson under the condition of water, to construct the wall of the open caisson on the shore, and to reduce friction resistance by the dead weight of the open caisson or the cutting edge of the open caisson excavated on the shore so as to achieve the purpose of sinking the open caisson.

The underground diaphragm wall is a kind of slot-digging machinery used in foundation engineering on the ground, a long and narrow deep slot is dug along the peripheral axis of the deep-digging engineering under the condition of mud wall protection, after the slot is cleared, the reinforcement cage is hung in the slot, then the underwater concrete is poured by duct method to construct a unit slot section, so that a continuous reinforced concrete wall is built underground section by section, and is used as water-intercepting, seepage-proofing, bearing and water-retaining structure. However, the existing underground continuous wall mainly adopts a cast-in-place concrete molding method, and the method has the following defects: 1. under special geological conditions (such as very soft mucky soil, deep sand layer and drift-stone-containing alluvial layer), the construction difficulty is very high; 2. the underground diaphragm wall process is invisible, the joint position of the adjacent concrete section is difficult to process, and the problems of misalignment and water leakage of the adjacent wall section are easy to occur; 3. the wall surface of the cast-in-situ structure has poor quality, and the phenomenon of exposed reinforcing steel bars often occurs; 4. in urban construction, the disposal of waste mud is troublesome. A newer construction method of the underground diaphragm wall is to construct the assembled diaphragm wall by adopting a pushing method, but a working well suitable for the construction of the assembled diaphragm wall is not available in the prior art.

For this reason, referring to fig. 1 to 5, an embodiment of the present utility model provides a working well, specifically including a working well body 100, a plurality of layers of first supporting members 120 are disposed between two adjacent side walls of the working well body 100, the plurality of layers of first supporting members 120 are sequentially disposed from top to bottom, a second supporting member 110 is disposed at a position of the working well body 100 near the top, the second supporting member 110 is folded into a ring along the circumferential direction of the wall of the working well body 100, a mounting base 130 for mounting a pushing device 220 is disposed on the wall of the working well body 100, a notch 101 is formed on the wall of the working well body 100 opposite to the mounting base 130, the notch 101 is provided with a steel structure sleeve 140 for assisting the continuous wall 300 to push out of the well, a base plate 150 is disposed at the bottom of the working well body 100, and a slide rail structure 160 for assisting the continuous wall 300 to push out of the well is disposed on the base plate 150.

The construction process of the prior assembled continuous wall mainly comprises the following steps: as shown in fig. 6, two working well bodies 100 and two receiving wells 400 are provided, the connection lines of the two working well bodies 100 and the two receiving wells 400 are surrounded to form a rectangle, and the two working well bodies 100 are diagonally arranged in the rectangle; after the construction of the working well body 100 and the receiving well 400 is finished, two rows of guide walls 210 are constructed between the working well body 100 and the receiving well 400, as shown in fig. 3, the working well body 100 is provided with a pushing device 220, the pushing device 220 is arranged on a mounting base 130, prefabricated continuous wall prefabricated blocks are assembled into continuous wall prefabricated blocks in advance, then the continuous wall 300 construction between the working well body 100 and one receiving well 400 is carried out, during the construction, a groove section is cut between the two rows of guide walls 210, the continuous wall prefabricated blocks are sequentially pushed into the groove section from a steel structure sleeve 140 through the pushing device 220, the sliding rail structure 160 can reduce the resistance when the pushing device 220 pushes the continuous wall prefabricated blocks, the bottom strength of the working well body 100 can be locally reinforced by the arrangement of a base plate 150, the phenomenon that sedimentation occurs at the bottom of the working well body 100 due to high-strength construction is avoided, the pushing construction of the continuous wall prefabricated blocks is orderly ensured, and after the first section of the continuous wall prefabricated blocks enters the receiving well 400, the construction of one section of the continuous wall 300 is completed; then, as shown in fig. 4, turning the direction of the pushing device 220 to construct the continuous wall 300 from the working well body 100 to the other receiving well 400, and during the construction, excavating a groove section between two rows of guide walls 210, and pushing the continuous wall precast blocks into the groove section in order through the pushing device 220, wherein when the first section of continuous wall precast block enters the receiving well 400, the construction of the second section of continuous wall 300 is completed; as shown in fig. 5, after the continuous wall 300 between the working well body 100 and the receiving well 400 is pushed in place, the cast-in-place sections of the ends of the two adjacent rows of continuous walls 300 are constructed, the pushing device 220 is removed during the cast-in-place sections, and when all the cast-in-place sections are completed, the earth is filled back into the working well body 100 and the receiving well 400, so that the construction of the fabricated continuous wall is completed.

The working well in the embodiment can realize horizontal pushing construction of the assembled continuous wall by adopting a pushing method, and can also realize cast-in-situ butt construction of the end part of the assembled continuous wall after the pushing construction is finished, thereby effectively solving the problem of difficult construction of the existing assembled continuous wall. Wherein, the setting of first support member 120 can improve the overall rigidity of working well body 100, avoids the oversized working well body 100 to lead to outside side force to drive the problem of working well body 100 deformation or damage, and the setting of second support member 110 can solve the problem that leads to working well body 100 unstable structure, atress uneven because of setting up notch 101 and steel structure cover 140.

In this embodiment, the cross section of the working well body 100 is rectangular, the installation bases 130 are disposed on the side walls of the working well body 100, the side walls of the working well body 100 with the installation bases 130 are adjacent, the thickness of the installation bases 130 is equal to that of the side walls of the working well body 100, the installation of the pushing device 220 is facilitated by the installation bases 130, and meanwhile, the force applied by the pushing device 220 can be uniformly distributed to the side walls of the working well body 100 when the continuous wall 300 is pushed by the pushing method, so that the situation of uneven local stress of the working well body 100 is avoided. Because the cross section of the working well body 100 is rectangular, the working well body 100 has four side walls, and the first supporting members 120 are disposed on the walls of the two adjacent sides, so as to effectively strengthen the structure of the working well body 100. The number of the first supporting members 120 is set according to the actual well depth of the working well body 100, the number of the first supporting members 120 is not limited, when the first supporting members 120 are constructed, the shape of the first supporting members 120 is spliced through a template, then, reinforced bars are placed into a cavity formed by the template, and concrete is poured, so that the first supporting members 120 are formed, soil in the working well body 100 is excavated, and the construction of the first supporting members 120 is performed, so that the construction efficiency of the working well can be effectively improved.

In some embodiments, the continuous wall is generally constructed underground, so that the working well body 100 is mostly sunk into the ground, while in this embodiment, the top of the working well body 100 is 0.5m higher than the ground, so that water on the ground can be effectively prevented from entering the working well body 100, and the bottom of the working well body 100 is 0.5m lower than the bottommost end of the continuous wall 300.

The notch 101 is just to the mounting base 130, and the notch 101 installs steel construction cover 140, and when normal assembly type continuous wall construction, all need carry out the pushing construction of continuous wall 300 from the two directions of working well body 100, steel construction cover 140 can play the effect of guiding continuous wall 300 to get into the slot section, can also prevent simultaneously that outside silt from getting into in the working well body 100.

In some embodiments, the high-pressure jet grouting piles 170 are disposed on the outer side of the working well body 100 near the steel structure sleeve 140, where the high-pressure jet grouting piles 170 are disposed to locally strengthen the wall of the working well body 100, so that the construction of the notch 101 and the steel structure sleeve 140 after the working well body 100 is completed is convenient, and the construction of the notch 101 and the steel structure sleeve 140 should be kept, so that the situation of settlement when the continuous wall 300 is pushed can be prevented.

As shown in fig. 3 and fig. 4, a plurality of layers of detachable opposite supporting structures 180 are further arranged between the steel structure sleeve 140 and the mounting base 130, the opposite supporting structures 180 are made of one of steel sections, steel pipes and concrete, when the pushing device 220 is adopted to perform pushing construction of the continuous wall 300, two rows of detachable opposite supporting structures 180 are arranged on two sides of the pushing direction of the pushing device 220, the opposite supporting structures 180 are vertically arranged at intervals, the arrangement positions of the opposite supporting structures 180 of each layer are consistent with that of the first supporting member 120, and the supporting points of the opposite supporting structures 180 and the well wall are beside the steel structure sleeve 140. In this embodiment, the opposite supporting structure 180 may be formed by pouring steel pipes, steel sections and concrete, the vertical distance between the opposite supporting structure 180 is determined according to geological conditions, the position selection of the opposite supporting structure 180 does not affect the installation and pushing construction of the continuous wall, and steel plates must be arranged between two fulcrums of the opposite supporting structure 180 and the well wall, so that stress concentration can be greatly reduced.

In some embodiments, as shown in fig. 7 and 8, a waterproof structure is disposed at one end of the steel structure sleeve 140 in the working well body 100, the waterproof structure includes a fastening column, a fastening piece 143 and a waterproof piece 141, the fastening column is fixedly connected with the steel structure sleeve 140, the waterproof piece 141 is sleeved on the fastening column, the fastening piece 143 is in threaded connection with the fastening column, and the fastening piece 143 presses the waterproof piece 141 against the steel structure sleeve 140, in addition, the waterproof piece 141 is made of rubber, the end of the waterproof piece 141 extends towards the center of the notch 101, and by setting the waterproof structure, sediment or water seepage entering into the working well body 100 during pushing can be avoided.

In other embodiments, the sliding rail structure 160 includes a sliding groove and steel balls, the sliding groove has a U-shaped cross section, and the steel balls are paved in the sliding groove. When the pushing device 220 is used for pushing the continuous wall 300, the continuous wall 300 is placed on the steel balls of the sliding groove, and when the pushing device 220 pushes the continuous wall 300, the friction force applied when the pushing device 220 pushes the continuous wall 300 is reduced by rolling of the steel balls, so that the working strength of the pushing device 220 can be greatly reduced.

The second supporting member 110 is mainly formed by pouring reinforced steel bars and concrete, the outer side of the second supporting member 110 is attached to the inner wall of the working well body 100, the shape of the inner wall of the working well body 100 is the same as the shape of the outer side of the second supporting member 110, the inner wall of the second supporting member 110 is circular, of course, the second supporting member 110 can also be formed by welding I-steel or steel pipes, and the setting of the second supporting member 110 can greatly improve the overall structural rigidity of the working well body 100.

In this embodiment, the working well body 100 is used for installation, pushing and integrated construction of the continuous wall 300, the working well body 100 is of a reinforced concrete structure, the plane is square, the depth is determined according to the height of the continuous wall 300, and the construction is performed by adopting a sunk well method or a reverse construction method. The four corners in the well are respectively provided with a first supporting member 120, and the first supporting members 120 are vertically arranged at intervals. When the open caisson method is used for constructing the working well body 100, concrete is poured after the steel bars are reserved, and when the working well body 100 is constructed by the reverse method, synchronous construction along with the well wall is performed. The notch 101 is arranged in the well, the notch 101 is provided with the steel structure sleeve 140, the steel structure sleeve 140 is opposite to the mounting base 130, the steel structure sleeve 140 is used for assisting pushing of the continuous wall 300, and meanwhile water and external sediment are prevented from entering the working well body 100. The second supporting member 110 is disposed from the top of the steel sleeve 140 to the top of the working well body 100, so that the structural strength of the working well body 100 is effectively enhanced, and the installation and construction of the continuous wall 300 are not affected.

The embodiment also provides a construction method of the working well, which specifically comprises the following steps:

s1, prefabricating a well wall of a working well body 100, and paying off to locate a construction position of the well wall of the working well body 100;

s2, constructing the well wall of the working well body 100 in sections, and hollowing out soil in the well wall after the well wall of one section of working well body 100 is constructed;

s3, repeating the step S2, when the preset position of the first support member 120 is excavated, pouring the first support member 120 while excavating, and when the construction of the well wall of the multi-section working well body 100 is finished, the first support member 120 is solidified and formed, so that the construction period is effectively shortened;

s4, pouring concrete at the bottom of the excavated working well body 100 to realize bottom sealing;

s5, after the bottom of the working well body 100 is sealed, constructing the base plate 150 and the sliding rail structure 160;

s6, constructing the mounting base 130 from bottom to top in a sectional manner;

s7, constructing the notch 101 and the steel structure sleeve 140, wherein the high-pressure jet grouting piles 170 are arranged at positions, close to the steel structure sleeve 140, on the outer side of the working well body 100 before constructing the notch 101 and the steel structure sleeve 140, so that uneven stress of the working well body 100 can be avoided during construction of the notch 101 and the steel structure sleeve 140;

and S8, after the completion, pouring construction of the second supporting member 110 is carried out, so that the structural strength of the working well body 100 is effectively improved.

In the construction method of the working well, the construction of the well wall of the working well body 100 is performed in sections, the casting of the first supporting member 120 is performed at the preset position while the excavation in the well wall is performed, the construction efficiency of the working well can be effectively improved, and the structural stability of the working well body 100 can be effectively maintained by arranging the first supporting member 120 while the excavation is performed.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. A work well, characterized by: including working well body (100), be provided with a plurality of layers of first supporting member (120) between the adjacent both sides wall of a well of working well body (100), a plurality of layers first supporting member (120) are arranged from last to arranging down in proper order, the position that working well body (100) is close to the top is provided with second supporting member (110), second supporting member (110) are followed the wall of a well circumference of working well body (100) is closed into the ring, the wall of a well of working well body (100) still is provided with mounting base (130) that supplies thrustor (220) to install, the wall of a well (100) just to mounting base (130) has seted up notch (101), notch (101) are provided with steel structure cover (140) that are used for assisting continuous wall (300) top to release the well, the bottom of working well body (100) is provided with basement board (150), arrange on basement board (150) and be used for assisting on the wall (300) to go out slide rail structure (160) of the top of the well.

2. A work well according to claim 1, wherein: the section of the working well body (100) is rectangular, the mounting bases (130) are arranged on the side walls of the working well body (100), the mounting bases (130) are adjacent to the side walls of the working well body, and the thickness of the mounting bases (130) is equal to that of the side walls of the working well body (100).

3. A work well according to claim 1, wherein: the top of the working well body (100) is 0.5m higher than the ground.

4. A work well according to claim 1, wherein: and a high-pressure jet grouting pile (170) is arranged at the outer side of the working well body (100) and close to the steel structure sleeve (140).

5. A work well according to claim 1, wherein: a plurality of layers of detachable opposite bracing structures (180) are also arranged between the steel structure sleeve (140) and the mounting base (130).

6. The work well of claim 5, wherein: the opposite supporting structure (180) is made of one of profile steel, a steel pipe and concrete.

7. A work well according to claim 1, wherein: one end of the steel structure sleeve (140) positioned in the working well body (100) is provided with a waterproof structure.

8. The work well of claim 7, wherein: the waterproof structure comprises a fastening column, a fastening piece (143) and a waterproof piece (141), wherein the fastening column is fixedly connected with the steel structure sleeve (140), the waterproof piece (141) is sleeved on the fastening column, the fastening piece (143) is in threaded connection with the fastening column, and the fastening piece (143) presses the waterproof piece (141) against the steel structure sleeve (140).

9. The work well of claim 8, wherein: the waterproof member (141) is made of rubber, and an end portion of the waterproof member (141) extends toward the center of the notch (101).

10. A work well according to claim 1, wherein: the sliding rail structure (160) comprises a sliding groove and steel balls, the section of the sliding groove is U-shaped, and the steel balls are paved in the sliding groove.

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