CN-122013812-A - Concrete pouring method for exterior wall of underground chamber without fertilizer groove

CN122013812ACN 122013812 ACN122013812 ACN 122013812ACN-122013812-A

Abstract

The invention relates to the technical field of civil engineering foundation pit construction, in particular to a concrete pouring method for an outer wall of a basement without a fertilizer groove, wherein an outer side template of the basement is composed of a wood template, a fillet and a steel pipe, an inner side template is composed of a hollowed steel plate, a vertical steel sleeve and a horizontal steel sleeve, and the inner side template and the outer side template are fixed and connected by split bolts; the split bolts are welded and connected with the planting ribs on the foundation pit guard piles, the hollow steel plates are used for separating the outer wall area of the foundation pit from the fertilizer groove area, independent and mutually noninterfere concrete pouring of the outer wall area of the foundation pit and the fertilizer groove area can be realized, and the fertilizer groove area adopts lower-grade concrete, so that engineering cost is effectively reduced. The outside form does not need a plurality of steel pipe diagonal braces are arranged, the construction is simple and convenient. The construction method realizes synchronous construction of the fertilizer tank and the basement outer wall under the condition of narrow space, has reasonable mutual connection among the working procedures, compact construction period and improves the construction efficiency.

Inventors

FU HONGLIN
ZHANG HAN
HE HONGBO
LIU XIANGYANG
SONG ZHIHU
LIU JINLONG
LI SHUNQUN
XU KAI
WANG LIYE
KE ZHAIBANG
ZHU LEI
HU SONGTAO

Assignees

安徽建工三建集团有限公司
合肥大学

Dates

Publication Date: 20260512
Application Date: 20260403

Claims (9)

1. A concrete pouring method for a basement exterior wall without a fertilizer slot is characterized by comprising the following specific steps: s1, construction preparation, namely conveying construction tools, equipment, materials and processed and manufactured fixed steel frames to a construction site according to construction progress; S2, constructing a waterproof layer, and constructing the waterproof layer on the outer surfaces of the foundation pit guard piles (1) and the waterproof curtain (2) in the fertilizer groove area (8); S3, constructing a water guide blind ditch (9), arranging the water guide blind ditch (9) below the basement bottom plate (3) and close to the foundation pit guard piles (1), and arranging water guide blind columns (10) between adjacent foundation pit guard piles (1) and close to the inter-pile anchor layer (11), wherein the lower parts of the water guide blind columns (10) are connected with the water guide blind ditch (9), and the height of the upper end parts of the water guide blind columns (10) beyond the upper surface of the basement bottom plate (3) is not less than 20.0cm; s4, constructing a basement bottom plate (3), and forming the basement bottom plate (3) through the working procedures of formwork supporting, steel bar binding, concrete pouring and maintenance; S5, constructing a base plate continuous connection section (12), and constructing a base plate continuous connection section (12) between the periphery of the basement base plate (3) and the foundation pit guard piles (1) and the inter-pile spray anchor layer (11), wherein the thickness of the base plate continuous connection section is the same as that of the basement base plate (3); S6, supporting a formwork by a basement outer wall (5) at the bottom layer, wherein an outer side formwork of the basement outer wall (5) consists of a wood formwork (16), fillets (14) and steel pipes (17), an inner side formwork consists of a hollowed steel plate (18), a vertical steel sleeve (19) and a horizontal steel sleeve (20), the inner side formwork is fixedly connected with the outer side formwork through a split bolt (13), and the split bolt (13) is welded with a planting rib (15) on a foundation pit guard pile (1); The lower end of the vertical steel sleeve (19) is fixed with the basement bottom plate (3), and the upper end is fixed with the waist beam (6), the horizontal clear distance between the hollowed steel plate (18) and the design boundary of the basement outer wall (5) is not less than 3.0cm; S7, synchronous concrete pouring, namely pouring vibrating concrete in layers to the areas of the basement outer walls (5) at the bottom layer, synchronously pouring concrete in layers to the fertilizer groove areas (8), wherein the concrete surface of the basement outer walls (5) at the same position of the hollowed steel plates (18) is 10-20cm higher than the concrete surface of the fertilizer groove areas (8) during pouring; s8, sleeve treatment, namely when the concrete in the two areas is initially set, extracting a vertical steel sleeve (19), horizontally feeding steel pipes (17) in the steel sleeve (20), and grouting and filling the inside of the plastic pipe (21); S9, constructing a bottom basement floor (4), supporting a mould, binding steel bars, pouring concrete and curing at the position of the bottom basement floor (4), and simultaneously, applying a reinforced concrete supporting plate belt (26) between the periphery of the basement floor (4) and the foundation pit guard piles (1); s10, supporting a formwork of the outer wall (5) of the basement on the upper layer, and supporting the formwork according to the requirement of the step S6, if the layer has horizontal support, firstly cutting and removing; s11, synchronously pouring the upper layer, and synchronously pouring concrete in the area of the basement outer wall (5) and the fertilizer groove area (8) according to the requirement of the step S7; S12, repeating the steps S10-S11 until the construction of the basement outer wall (5), the fertilizer groove area (8) and the basement floor (4) of all floors is completed.
2. The method for pouring concrete on the outer wall of the basement without the fertilizer trough according to claim 1, wherein in the step S3, the water guide blind column (10) and the water guide blind ditch (9) are mutually connected as a whole; The water-guiding blind ditch (9) is a water-permeable blind ditch filled by stone blocks and broken stones or a blind ditch made of plastic or high-density polyethylene, and the ditch wall is provided with a reverse filtering layer.
3. The method for casting concrete on an exterior wall of a basement without a fertilizer trough according to claim 1, wherein in the step S6, the hollowed steel plates (18) are steel plates with holes uniformly formed, and coarse aggregate in the concrete on the exterior wall (5) of the basement cannot pass through the holes on the hollowed steel plates (18).
4. The method for pouring concrete on the outer wall of a basement without a fertilizer groove according to claim 3, wherein the thickness of the hollowed steel plate (18) is not more than 4.0mm, and the aperture ratio of the holes on the hollowed steel plate (18) is 30% -60%.
5. The method for pouring concrete on the outer wall of the basement without the fertilizer tank, as set forth in claim 1, is characterized in that in the step S6, the vertical steel sleeve (19) and the horizontal steel sleeve (20) adopt a combined structure that a plastic pipe (21) is sleeved outside the steel pipe (17); the vertical steel sleeve (19) and the horizontal steel sleeve (20) are only used in the inner side template.
6. The method for concreting an exterior wall of a basement without a fertilizer trough according to claim 1, wherein in the step S7, the exterior wall (5) area of the basement and the fertilizer trough area (8) are concreted independently; The concrete in the fertilizer tank area (8) adopts any one of C15 concrete, C20 concrete, foam concrete and ready-mixed fluid state solidified soil.
7. The method for pouring concrete on the outer wall of the basement without a fertilizer trough according to claim 1, wherein in the step S12, the upper end of the vertical steel sleeve (19) of the side wall formwork of the basement at the uppermost layer is fixedly connected with the crown beam (22) through a fixed steel frame (23), and the fixed steel frame (23) is fixed on the upper surface of the crown beam (22) through an anchor bolt (24).
8. The concrete pouring method for the basement exterior wall without the fertilizer trough according to claim 1, wherein the concrete grade of the supporting plate belt (26) is the same as that of the adjacent basement exterior wall (5) and the frame beam (25), and the same elevation and the same thickness as those of the basement floor slab (4).
9. The concrete pouring method for the basement exterior wall without the fertilizer groove of claim 1, wherein a water stop steel plate is arranged in the middle of the split bolt (13), and the welding length of the planting bar (15) and the split bolt (13) is used for meeting the yield resistance requirement under construction load.

Description

Concrete pouring method for exterior wall of underground chamber without fertilizer groove Technical Field The invention relates to the technical field of foundation pit construction in civil engineering, in particular to a concrete pouring method for an outer wall of a basement without a fertilizer slot. Background The fertilizer groove area is generally a space between the basement outer wall of a building or the foundation outer wall and the foundation pit edge, the width of the fertilizer groove area is generally 0.5-1.2m, and due to the limitation of a field, the width of the fertilizer groove area is very narrow, the space is narrow, even enough space is not available for constructors to enter the space of the fertilizer groove area to carry out basement outer wall waterproof construction, so that construction of a non-fertilizer groove area is developed, namely, the space of the fertilizer groove area and the basement outer wall are synchronously poured. The existing construction technology for the non-fertilizer tank area has the following limitations that firstly, the width of an outer wall is 300mm, the concrete grade is higher (C35 or C40), the concrete in the non-fertilizer tank area has higher impermeability grade, the concrete in the non-fertilizer tank area does not need to have high requirements, even foam concrete, gray soil or self-flow solidified soil can be used, when the traditional non-fertilizer tank area is constructed, the basement outer wall only carries out outside single-side support molds, the inner side does not support molds any more, no space isolation exists between the outer wall and the non-fertilizer tank area, the space of the non-fertilizer tank area is identical to that of the concrete of the outer wall, great waste is caused, the construction cost is greatly increased, secondly, when the traditional non-fertilizer tank area is constructed, the single-side support mold (truss) of the basement outer wall has large mass, a plurality of steel pipe diagonal braces and fixed pre-buried supporting points are needed to be arranged in the high range of the wall, the construction difficulty and the accuracy requirement is high, and the construction is difficult. In conclusion, the construction technology of the traditional non-fat tank area is high in construction difficulty and high in cost, does not meet the high-efficiency construction requirement, and considers the improvement of the construction technology of the non-fat tank area, and in view of the fact, the concrete pouring method of the non-fat tank basement exterior wall is provided. Disclosure of Invention The invention aims to solve the defects in the background art and provides a concrete pouring method for a basement exterior wall without a fertilizer groove. In order to solve the technical problems, the invention adopts the following technical scheme: A concrete pouring method for a basement exterior wall without a fertilizer slot comprises the following specific steps: s1, construction preparation, namely conveying construction tools, equipment, materials and processed and manufactured fixed steel frames to a construction site according to construction progress; S2, constructing a waterproof layer, and constructing the waterproof layer on the outer surfaces of the foundation pit guard piles and the waterproof curtain in the fertilizer groove area; S3, constructing a water-guiding blind ditch, arranging the water-guiding blind ditch below the basement bottom plate and close to the foundation pit guard piles, arranging water-guiding blind columns between adjacent foundation pit guard piles close to the inter-pile anchor layer, connecting the lower parts of the water-guiding blind columns with the water-guiding blind ditch, and enabling the upper end parts of the water-guiding blind columns to exceed the upper surface of the basement bottom plate by not less than 20.0cm; S4, constructing a basement bottom plate, and forming the basement bottom plate through the working procedures of formwork supporting, steel bar binding, concrete pouring and maintenance; S5, constructing a base plate continuous connection section, wherein the thickness of the base plate continuous connection section is the same as that of the basement base plate between the periphery of the basement base plate and the spraying anchor layer between the foundation pit guard piles; s6, supporting a formwork on the bottom basement outer wall, wherein the formwork on the basement outer wall consists of a wood formwork, fillets and steel pipes, the inner side formwork consists of a hollowed steel plate, a vertical steel sleeve and a horizontal steel sleeve, the inner side formwork and the outer side formwork are fixedly connected through split bolts, and the split bolts are welded and connected with the planting bars on the foundation pit guard piles; the lower end of the vertical steel sleeve is fixed with the basement bottom plate, and the upper end o