CN213926387U - Simple plugging structure for reserved sleeve of underground structure outer wall - Google Patents

Abstract

A simple plugging structure for a reserved sleeve of an underground structure outer wall is characterized in that a concrete cushion layer (2), a raft lower waterproof layer (21) and a raft (3) are sequentially arranged at the bottom of a foundation pit of an underground structure area, an outer wall column (29) of a guide wall (28) is arranged below an outer wall column construction joint on the raft (3), and a water stop steel plate (6) is arranged in the middle of the upper plane of the guide wall (28); a waterproof protective layer (22) is arranged on the concrete cushion layer (2) and the waterproof layer (21) paved on the concrete cushion layer; a double-layer steel bar net sheet is arranged on the guide wall (28); a reserved casing (12) is arranged on the double-layer reinforcing mesh sheet, and a waterproof layer (20) in the steel casing is arranged on the inner wall of the reserved casing (12); one end of the reserved sleeve (12) is provided with a wooden baffle plate (23), and the outer wall of the wooden baffle plate (23) is provided with a waterproof layer (191); a connecting pipe (26) is arranged in the reserved sleeve (12). The utility model provides a fertile groove earthwork backfill back mud rain leak into the inside problem of underground structure.

Description

Simple plugging structure for reserved sleeve of underground structure outer wall

Technical Field

The utility model relates to a simple and easy block structure of underground structure outer wall reservation sleeve pipe.

Background

With the continuous development of building construction technology, the space for underground needs becomes a normal state. The outer wall plate of the underground structure is often penetrated by a pipeline, so that the connection between the inner pipeline and the outer pipeline of the underground structure is realized; but the pipeline installation is far behind the works of earth backfill and the like outside the underground structure.

In order to improve the operation environment of structure construction, the backfilling of the foundation pit fertilizer groove earthwork is usually carried out after the construction of an underground structure is finished; when the pipeline outside the underground structure is installed, excavation of pipeline groove earthwork, installation of the pipeline and the like are sequentially carried out. And finally, backfilling earthwork of the pipeline groove after the pipeline is installed and qualified by inspection and acceptance. In order to solve the problem that the backfilling of the fertilizer groove earthwork is restricted due to the existence of a reserved sleeve on an external wall panel of an underground structure, cement, neps and other substances are usually used for filling the sleeve for temporary plugging. Due to the characteristics of cement, neps and the like and the objective existence of gaps in the sleeve, rain and mud leakage often occurs; the existence of rain and mud leakage inevitably affects the working environment and construction conditions inside the underground structure; therefore, a convenient and practical construction method for simply plugging the underground structural wallboard sleeve is urgently needed in a construction site.

When the underground structure construction is completed according to the conventional method, various reserved sleeves with different numbers, specifications and heights are inevitably arranged on the outer wall column wall of the underground structure. The existence of the reserved sleeve pipe enables the inside and the outside of the underground structure to be communicated with each other, and installation of various pipelines in the later period is facilitated.

The existence of the reserved sleeve inevitably influences the backfilling of the foundation pit earthwork of the fertilizer groove (namely, when the backfilling standard of the foundation pit earthwork is higher than the elevation of the reserved sleeve, silt and water can be continuously introduced into the underground structure according to the principle that water flows to the lower part). In view of the temporary property of the reserve pipe, the reserve pipe is usually filled with concrete or soft material. Because the characteristics of concrete or soft materials and the like limit, the concrete or soft materials can not be well and closely combined with the reserved casing pipe, and the phenomenon that mud, rain and rain leak into the underground structure along the defect position between the walls of the reserved casing pipe still occurs.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a simple plugging structure for a reserved sleeve of an underground structure outer wall, wherein a concrete cushion layer is arranged at the bottom of a foundation pit of an underground structure area, a raft lower waterproof layer is arranged on the concrete cushion layer, a raft is arranged on the raft lower waterproof layer, an outer wall column of a guide wall is arranged below an outer wall column construction joint on the raft, and a water stop steel plate is arranged in the middle of the upper plane of the guide wall; the concrete cushion layer protruding out of the raft and the waterproof layer paved on the concrete cushion layer are provided with waterproof protective layers; vertical reinforcing steel bars of the outer wall plate inner layer reinforcing steel bar mesh and vertical reinforcing steel bars of the outer layer reinforcing steel bar mesh which are pre-inserted on the upper plane of the guide wall are respectively connected with vertical reinforcing steel bar inner row ribs and vertical reinforcing steel bar outer row ribs in sequence; the horizontal steel bar inner row ribs and the horizontal steel bar outer row ribs are respectively arranged on the outer sides of the vertical steel bar inner row ribs and the outer sides of the vertical steel bar outer row ribs to form double-layer steel bar meshes of the external wall panel; a reserved sleeve is arranged on the double-layer reinforcing mesh sheet, and a water stop wing ring is arranged on the reserved sleeve; then installing a split bolt with a water-stopping wing ring on the double-layer reinforcing mesh; the inner wall of the reserved sleeve is provided with a waterproof layer in the steel sleeve; one end of the reserved sleeve is provided with a wooden baffle plate, and the wooden baffle plate is connected with an iron railing through an iron pull rod; the outer wall of the wooden baffle is provided with a waterproof layer; the reserved sleeve is internally provided with a connecting pipe.

Furthermore, the waterproof layer is welded with the waterproof layer on the outer wall cylindrical surface.

Furthermore, a waterproof material is arranged at the gap between the inner wall of the reserved sleeve and the outer wall of the connecting pipe.

The utility model discloses a reserve the sleeve pipe outer port and establish waterproofing membrane, solved the inside problem of fertile groove earthwork backfill back mud rain leakage income underground structure.

Drawings

Fig. 1 is the structure schematic diagram of the basement raft construction of the utility model.

Figure 2 is the utility model discloses a structural schematic of basement outer wall post reinforcing bar construction.

Fig. 3 is the utility model discloses a structural schematic of underground structure outer wall post and platform beam slab construction.

Fig. 4 is the utility model discloses an underground structure outer wall post and platform beam slab concrete structure sketch map.

Fig. 5 is the utility model discloses an underground structure outer wall reserves interim block structure schematic diagram of pipe position installation.

Fig. 6 is the utility model discloses a hierarchical structure schematic diagram is backfilled to underground structure outer wall outside earthwork.

Fig. 7 is the utility model discloses an underground structure outer wall outside needs to take over a digging schematic diagram of earth.

Fig. 8 is the utility model discloses an outer pipeline UNICOM mounting structure schematic diagram in underground structure outer wall.

Fig. 9 is the utility model discloses an outer pipeline UNICOM mounting structure schematic diagram in underground structure outer wall.

Wherein: 1. the method comprises the following steps of (1) marking a height line at the bottom of a foundation pit, 2) concrete cushion layer, 3, raft plate, 4, side slope control line, 5, split bolts, 6, water stop steel plate, 7, vertical steel bar inner row ribs, 71, vertical steel bars of outer wall plate inner layer steel bar net sheets, 8, vertical steel bar outer row ribs, 81, vertical steel bars of outer layer steel bar net sheets, 9, horizontal steel bar outer row ribs, 10, horizontal steel bar inner row ribs, 11 and water stop wing rings; 12. the prefabricated building comprises reserved sleeves, 13, a template support frame, 14, a platform beam slab bottom die system, 15, template back ridges, 16, a template, 17, double steel pipe keels, 18, a mountain-shaped clamp, 19, a waterproof layer, 191, a waterproof coiled material, 20, a steel sleeve waterproof layer, 21, a raft lower waterproof layer, 22, a waterproof protective layer, 23, a baffle, 24, a railing, 25, a pull rod, 26, a connecting pipe, 27, a waterproof material, 28, a guide wall, 29 and an outer wall column.

Detailed Description

The utility model provides a simple and easy block structure of sleeve pipe is reserved to underground structure outer wall, establish concrete bed course 2 in underground structure district's foundation ditch bottom, establish raft waterproof layer 21 under the concrete bed course 2, establish raft 3 on the raft waterproof layer 21 under the raft, mark out the outer wall column 29 position on raft 3 according to the design, vertical reinforcing bar 71 of outer wall plate inlayer reinforcing bar net piece and the vertical reinforcing bar 81 of outer reinforcing bar net piece are inserted in advance to the outer wall column position of maring, set up an outer wall column construction joint from raft 3 upper plane elevation 450 mm. The outer wall columns below the construction joints are referred to as guide walls 28. Erecting and reinforcing the guide wall template, arranging a split bolt 5 at a position which is 200 mm away from the upper plane of the raft plate, and installing a water stop steel plate 6 in the middle of a construction joint (namely the upper plane of the guide wall); a waterproof protective layer 22 is added on the concrete cushion layer 2 protruding out of the raft 3 and the waterproof layer 21 paved on the concrete cushion layer; the vertical steel bar inner row ribs 71 and the vertical steel bar outer row ribs 8 are respectively connected with the vertical steel bar inner row ribs 7 and the vertical steel bar outer row ribs 81 pre-inserted on the upper plane of the guide wall in sequence, and then the horizontal steel bar inner row ribs 10 and the horizontal steel bar outer row ribs 9 are respectively installed on the outer sides (close to the basement) of the vertical steel bar inner row ribs 7 and the outer sides (close to the foundation pit) of the vertical steel bar outer row ribs 8 to form double-layer steel bar meshes of the external wall panel; a reserved sleeve 12 is arranged on the double-layer reinforcing mesh sheet, and a water stop wing ring 11 is welded on the reserved sleeve 12; then installing a split bolt 5 with a water stop wing ring on the double-layer reinforcing mesh; the waterproof layer 19 is rolled into the reserved sleeve 12 to form a waterproof layer 20 in the steel sleeve; after a waterproof layer 20 in a steel sleeve is formed in the reserved sleeve 12, a wooden baffle plate 23, an iron railing 24 and an iron pull rod 25 of the simple plugging facility are installed, a waterproof coiled material 191 is additionally arranged on the outer side of the wooden baffle plate 23 and is welded with a waterproof coiled material layer 19 on the cylindrical surface of an outer wall, and the waterproof quality is ensured.

The connecting pipe 26 is installed in the reserved sleeve 12, and the waterproof material 27 is arranged at the gap between the inner wall of the embedded sleeve 12 and the outer wall of the connecting pipe 26, so that the external connection part of the pipeline is ensured not to leak.

As shown in fig. 1-9, the utility model relates to a simple plugging construction process for underground structure outer wall reserved sleeve, which comprises the following steps:

the method comprises the following steps: sequentially completing foundation pit earthwork excavation according to a construction rule of an underground structure to form a foundation pit bottom marking line 1 and a side slope control line 4, sequentially completing a concrete cushion layer 2, a raft lower waterproof layer 21 and a raft 3 of the underground structure, marking the position of an external column 29 on the raft 3 according to design, arranging a construction joint of the external column at a position 450 mm away from the surface of the raft, setting the external column below the construction joint for pouring concrete simultaneously with the raft as a guide wall 28 in building habit, arranging a water stop steel plate 6 in the middle of the construction joint, and installing a tie bolt 5 with a water stop wing ring at the lower part of the water stop steel plate 6 to facilitate installation and reinforcement of a guide wall template; after the raft and the guide wall concrete are poured, throwing out the vertical steel bars 71 of the inner layer steel bar meshes and the vertical steel bars 81 of the outer layer steel bar meshes of the external wall plate; in order to protect the waterproof layer 21 under the raft, a waterproof protective layer 22 is provided. Vertical reinforcing steel bars 71 of the inner reinforcing steel bar net piece of the thrown-out external wall panel and vertical reinforcing steel bars 81 of the outer reinforcing steel bar net piece are respectively connected with an inner reinforcing steel bar row rib 7 of the vertical reinforcing steel bar of the wall column structure of the underground structure and an outer reinforcing steel bar row rib 8 of the vertical reinforcing steel bar of the wall column structure of the underground structure in sequence, and then the inner reinforcing steel bar row rib 10 of the horizontal direction and an outer reinforcing steel bar row rib 9 of the horizontal direction of the wall column structure of the underground structure are respectively installed to form a double-layer reinforcing steel bar net piece of the external wall panel, a ladder rib and a drag hook rib are installed in the double-layer reinforcing steel bar net piece, and a protection cushion block is installed on the reinforcing steel bar net piece.

Step two: cutting a reserved sleeve 12 meeting design requirements according to a design drawing, welding a water stop wing ring 11 to manufacture a complete waterproof steel sleeve, and then pre-burying and fixing the waterproof sleeve on a double-layer reinforcing mesh sheet of the outer wall column according to the size shown in the drawing.

Step three: the binding of the steel reinforcement framework is completed, and after supervision and acceptance, the die assembly operation can be carried out. When the mold is closed, a split bolt 5 with a water stop wing ring is required to be installed; and then installing nuts on the water stop screw rods 5 according to the supported template 16, the template back edges 15, the double steel pipe keels 17 of the underground structure wall column template and the mountain-shaped clamps 18, and tensioning the template of the underground structure outer wall to ensure that the underground structure template is accurate in size and firm in fixation.

Step four: erecting a complete template support frame 13 by utilizing scaffold pipes and auxiliary parts in the range of an underground structure; a keel, a back ridge and a template are sequentially paved on the upper part of the template support frame to form a finished platform beam plate bottom template system 14; and binding the platform beam plate reinforcing steel bars.

Step five: and finishing the concrete of the underground structure wall column beam plate according to the requirements of the operation rules.

Step six: finishing the maintenance of the concrete of the underground structure wallboard according to the requirement of concrete construction specifications; after the maintenance, according to prop up earlier afterwards tear open, the order of tearing open earlier afterwards, loosen earlier the nut of split bolt, pull down vertical structure's two steel pipe fossil fragments 17, template back of the body stupefied 15, template 16, pull down platform beam slab die block system 14 and underground structure beam slab structure's inside template support frame 13 again, platform beam slab die block system 14 includes underground structure beam slab structure's beam slab die block, template back of the body stupefied, fossil fragments, and will pull down the turnover material clear up, pile up, shift out the working face.

Step seven: cleaning the structural surface of the outer wall column of the underground structure, and repairing the defect; and removing the waterproof protective layer 22, and rolling up the originally thrown-out lower waterproof layer 21 of the raft.

Step eight: manufacturing a special fixing frame for the reserved sleeve 12; the fixed frame is provided with a wooden baffle 23 with the size more than 200 mm larger than the outer diameter of the reserved sleeve 12, a phi 12 mm iron pull rod 25 is fixed on the baffle 23, the length of the pull rod is longer than that of the sleeve, the pull rod is convenient to be respectively installed with the railing 24 and the wooden baffle 23, and an iron railing 24 is arranged at the end part of the phi 12 mm iron pull rod. The length of the iron railing is more than the diameter of the sleeve by more than 100 mm, and the iron railing can be connected with the pull rod.

Step nine: and (3) constructing the waterproof layer 19 according to the requirements of waterproof operation regulations, wherein when the waterproof layer 19 outside the concrete cushion layer 2 of the underground structure wall column is constructed, the waterproof layer 19 needs to be rolled into the reserved sleeve 12 to form the waterproof layer 20 in the steel sleeve, so that the waterproof quality is ensured.

Step ten: special fixing frames (23, 24 and 25) of the reserved sleeve 12 are installed, and a wooden baffle plate 25 of the special fixing frame is in contact with the waterproof layer 19, so that proper reinforcement is realized, and the waterproof layer 19 is prevented from being damaged.

Step eleven: a waterproof roll 191 (the waterproof area is larger than each side of the baffle of the special fixing frame by not less than 200 mm) is added on the baffle 23 side of the special fixing frame of the reserved sleeve 12 and is connected with a large-area waterproof layer 19.

Step twelve: and backfilling and tamping earthwork layer by layer according to the requirement of backfilling earthwork of the foundation pit until the earthwork reaches the designed elevation.

Step thirteen: before the pipeline construction in the underground structure range, trench earthwork excavation is carried out according to the positions of the water stop wing rings 11 and the reserved sleeves 12, the positions of the pipe orifices of the reserved sleeves 12 are exposed, and the water stop wing rings are cleaned to the waterproof coiled material 191.

Fourteen steps: in the convex portion of waterproofing membrane 191, a cross line is drawn, and waterproofing membrane 191 is torn slightly until the need for taking out baffle plate 23 is satisfied.

Step fifteen: the connection between the pull rod 25 and the railing 24 inside the underground structure is released, and the baffle 23 of the special fixing frame of the reserved sleeve 12 is taken out.

Sixthly, the steps are as follows: the excess waterproof roll 191 is cut off, and the large-area waterproof layer 19 cannot be damaged during cutting off.

Seventeen steps: according to the operation rules, a connecting pipe 26 of a waterproof casing pipe penetrating through the outer wall surface of the underground structure and communicating the underground structure inner pipeline with the municipal pipeline is installed, and a waterproof material 27 is arranged at the gap between the inner wall of the reserved casing pipe 12 and the outer wall of the connecting pipe 26 for embedding and filling, so that the leakage of the external part of the pipeline is avoided.

Eighteen steps: and completing external connection of pipelines and the like, and backfilling the trench soil according to the operation specification requirements after the trench soil is qualified through a pressing test.

The utility model not only solves the requirement of backfilling the earthwork of the fertilizer groove after the basement structure is finished, but also prevents the backfilled earthwork outside the underground structure and the rainwater and the like from leaking into the room; meanwhile, the problem that the waterproof layer of the outer wall column wall of the underground structure is possibly damaged during the earthwork construction of the connecting pipeline groove in the later period can be solved, the construction is convenient, materials are saved, the labor consumption is reduced, the cost is reduced, and the quality is guaranteed.

Claims (3)

1. The utility model provides a simple and easy block structure of underground structure outer wall reservation sleeve pipe which characterized in that: the concrete cushion layer (2) is arranged at the bottom of a foundation pit of the underground structure area, the raft lower waterproof layer (21) is arranged on the concrete cushion layer (2), the raft (3) is arranged on the raft lower waterproof layer (21), the outer wall column (29) of the guide wall (28) is arranged below the outer wall column construction joint on the raft (3), and the water stop steel plate (6) is arranged in the middle of the upper plane of the guide wall (28); a concrete cushion layer (2) protruding out of the raft (3) and a waterproof protective layer (22) arranged on a lower waterproof layer (21) of the raft paved with the concrete cushion layer; vertical steel bars (71) of the outer wall panel inner layer steel bar meshes pre-inserted on the upper plane of the guide wall (28) and vertical steel bars (81) of the outer layer steel bar meshes are respectively connected with vertical steel bar inner row ribs (7) and vertical steel bar outer row ribs (8) in sequence; horizontal steel bar inner row ribs (10) and horizontal steel bar outer row ribs (9) are respectively arranged on the outer sides of the vertical steel bar inner row ribs (7) and the vertical steel bar outer row ribs (8) to form double-layer steel bar meshes of the external wall panel; a reserved sleeve (12) is arranged on the double-layer reinforcing mesh sheet, and a water stop wing ring (11) is arranged on the reserved sleeve (12); then a split bolt (5) with a water stop wing ring is arranged on the double-layer reinforcing mesh; the inner wall of the reserved casing (12) is provided with a waterproof layer (20) in the steel casing; one end of the reserved sleeve (12) is provided with a wooden baffle plate (23), and the wooden baffle plate (23) is connected with an iron railing (24) through an iron pull rod (25); the outer wall of the wooden baffle plate (23) is provided with a waterproof coiled material (191); a connecting pipe (26) is arranged in the reserved sleeve (12).

2. The simple plugging structure for the reserved sleeves of the outer wall of the underground structure according to claim 1 is characterized in that: and the waterproof coiled material (191) is welded with a waterproof layer (19) on the cylindrical surface of the outer wall.

3. The simple plugging structure for the reserved sleeves of the outer wall of the underground structure according to claim 1 is characterized in that: and a waterproof material (27) is arranged at the gap between the inner wall of the reserved sleeve (12) and the outer wall of the connecting pipe (26).

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