CN116771115A - Form-removal-free assembled basement outer wall post-pouring strip advanced water stop construction process - Google Patents
Form-removal-free assembled basement outer wall post-pouring strip advanced water stop construction process Download PDFInfo
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Abstract
The application discloses a basement outer wall post-cast strip advanced water stop construction process free of form removal, and relates to the field of post-cast strip water stop construction; the method comprises the following steps: s10, pouring outer wall concrete, reserving a post-pouring belt and presetting a sleeve in an outer wall body; s20, hoisting the precast slab to a post-cast strip, and fixing the precast slab at the post-cast strip through a sleeve; s30, coating waterproof paint on the outer wall and the precast slab; s40, backfilling the fertilizer groove and pouring the post-pouring belt. The prefabricated plate is arranged at the upstream surface of the post-pouring belt of the outer wall and is connected with structural walls at two sides of the post-pouring belt through bolts, so that the effect of sealing the outer wall in advance is achieved. The whole outer wall is coated with polyurethane waterproof paint, and a waterproof layer is additionally arranged at the joint of the precast slab and the outer wall structure, so that the effect of advanced water stop of the post-cast strip is achieved. And after the waterproof layer and the waterproof protective layer are constructed, the outer frame dismantling and fertilizer groove backfilling procedures are carried out.
Description
Technical Field
The application relates to the field of post-pouring strip water stop construction, in particular to a basement outer wall post-pouring strip advanced water stop construction process free of form removal.
Background
The traditional construction technology of the post-pouring strip of the outer wall is late in closing time, construction procedures such as outer wall waterproofing and fertilizer tank backfilling cannot be intervening in time, fertilizer tank dewatering is required to be continuously carried out, construction cost is high, and anti-seepage effect is poor after the post-pouring strip is formed.
And the traditional post-cast strip waterproof and the external wall large-surface waterproof cannot be constructed simultaneously, and the traditional post-cast strip waterproof and the external wall (except for the post-cast strip part) are generally waterproof on the large surface, and the post-cast strip part is complemented with the waterproof. The waterproof construction interval time of the front and the back is long, when the post-pouring belt is used for water prevention, the basal plane is seriously polluted in most cases, the treatment is difficult and perfect, and the water prevention is poor; furthermore, the project is a working period, the outer frame is removed in advance, and the backfilling of part of fertilizer grooves is carried out, so that the post-pouring belt waterproof working procedure can not be constructed, and the post-pouring belt part is seriously leaked finally.
Disclosure of Invention
In order to overcome the defects of the prior art, the application provides an advanced water-stopping construction process for the post-pouring strip of the basement outer wall without form removal.
The technical scheme adopted for solving the technical problems is as follows: in the advanced water-stopping construction process of the basement exterior wall post-pouring strip without form removal, the improvement comprises the following steps:
s10, pouring outer wall concrete, reserving a post-pouring belt and presetting a sleeve in an outer wall body;
s20, hoisting the precast slab to a post-cast strip, and fixing the precast slab at the post-cast strip through a sleeve;
s30, coating waterproof paint on the outer wall and the precast slab;
s40, backfilling the fertilizer groove and pouring the post-pouring belt.
In the above technical scheme, the prefabricated plate comprises a head plate, a tail plate and at least one target plate; the head board, the target board and the tail board are sequentially installed from the bottom to the top of the outer wall, bolt holes are formed in the head board, the target board and the tail board, and the head board, the target board and the tail board are inserted into the bolt holes and the sleeve through bolts to achieve fixed installation of the prefabricated board and the outer wall.
In the above technical scheme, a base layer treatment is further required between the step S10 and the step S20, wherein the base layer treatment is to build a concrete sill in the upstream surface direction of the outer wall guide wall, a gap is reserved between the concrete sill and the outer wall guide wall, and the outer surface of the sill is smoothed and calendered by waterproof mortar.
In the technical scheme, before the precast slab is hoisted in the step S20, quality defects such as explosion, honeycomb, pitting and the like on two sides of the post-cast strip of the outer wall within a certain distance are repaired, so that the requirements on flatness and perpendicularity of the base surface of the outer wall are ensured; and (3) cleaning the base surface slurry, finding out the embedded points of the sleeve one by one, checking the size of the point, and ensuring that the prefabricated plate can be installed smoothly at one time.
The hoisting process of the precast slab in the technical scheme comprises the following steps of:
s21, a lifting site is provided with three subareas at least, namely a head plate stacking area, a target plate stacking area and a tail plate stacking area;
s22, hoisting the precast slab, reserving enough construction working surfaces, and adjusting double-row outer scaffold at the fertilizer groove; ejecting marked lines on the horizontal rods of the outer frame from top to bottom at the two sides of the post-pouring belt of the outer wall; cutting horizontal rods along the positions of the marked lines, and adjusting or dismantling other rod pieces between the two marked lines to ensure that a certain space is left and right for hoisting the precast slab;
s23, hoisting the head plate by adopting a long transverse hanging beam; in the hoisting process, soft elastic materials are adhered to four sides of two sides of the precast slab, so that the slab body is prevented from being rubbed with an outer wall or a support hair or colliding to cause damage; slowly descending the precast slab from the top of the sill, slowly adjusting, and when the precast slab approaches the basement floor surface, carrying out preliminary positioning by assisting a installer to lightly push the precast slab according to a positioning line, guiding the precast slab to fall along a wall by an operator, and embedding the bottom of the head slab into the brick sill; after the head plate is in place, starting to fasten the bolt;
s24, installing a target and a tail plate; the target is directly erected at the end part of the head plate and is installed one by one from bottom to top;
s25, filling and compacting gaps between the precast slabs and the sill, between the precast slabs and the outer wall structure and between the precast slabs and the outer wall structure by waterproof mortar; the waterproof mortar at the junction corner of the top of the brick ridge platform and the precast slab should be made into an R angle or a 45-degree slope toe.
The construction process for brushing the waterproof paint on the outer wall and the prefabricated plate in the step S30 in the technical scheme comprises the following steps:
s31, lining glass fiber gridding cloth at two ends of the joint of the prefabricated plates and the outer wall structure, and adding a single-component polyurethane waterproof paint layer;
s32, after the additional waterproof layer is solidified, large-surface waterproof construction is carried out; the coating directions are mutually perpendicular, firstly, uniformly coating waterproof paint for one time, and immediately pasting a glass fiber net, when the glass fiber net is pasted, spreading and pressing are smooth, the glass fiber net is tightly attached to the lower layer of paint, and then, at least one layer of paint is coated on the surface of the glass fiber net to enable the glass fiber net to reach the thickness required by design;
s33, arranging temporary water supply pipes at two ends of a post-pouring belt at the top of the basement outer wall, and performing a 24-hour water spraying test; periodically inspecting leakage condition of the post-pouring zone of the basement outer wall, finding out reasons, recording leakage points, and adopting corresponding measures to solve the problems.
In the technical scheme, the fertilizer slot backfilling and the outer wall post-pouring belt pouring in the step S40 are performed simultaneously, so that the pressure consistency of two sides is ensured; and when the fertilizer groove backfilling and the outer wall settlement post-pouring belt pouring cannot be performed simultaneously, the fertilizer groove backfilling is subjected to layered and segmented construction, the thickness of each layer is not more than 500mm, in the backfilling process, the condition of the post-pouring belt precast slab is observed, and if abnormal conditions occur, the backfilling work is immediately stopped.
In the technical scheme, the precast slab is made of concrete.
Before the outer wall is poured in the step S10, the contact surface of the embedded sleeve and the outer wall template should be tightly attached, so that the concrete slurry is prevented from penetrating into the pipe root of the embedded part when the concrete is poured.
In the technical scheme, when concrete is poured and rammed, the vibrating rod is prevented from being in direct contact with the embedded sleeve, so that the embedded sleeve is prevented from being damaged or deviated under the action of the vibrating rod.
The beneficial effects of the application are as follows: the prefabricated plate is arranged at the upstream surface of the post-pouring belt of the outer wall and is connected with structural walls at two sides of the post-pouring belt through bolts, so that the effect of sealing the outer wall in advance is achieved. The whole outer wall (containing precast slabs) is coated with polyurethane waterproof paint, and a waterproof layer is additionally arranged at the joint of the precast slabs and the outer wall structure, so that the effect of advanced water stop of the post-pouring belt is achieved. And after the waterproof layer and the waterproof protective layer are constructed, the outer frame dismantling and fertilizer groove backfilling procedures are carried out.
Drawings
FIG. 1 is a flow chart of a method for a construction process of advanced water stop of a post-cast strip of an outer wall of a basement assembled without disassembling a formwork.
FIG. 2 is a diagram of an embodiment of a construction process of advanced water stop of a post-cast strip of an exterior wall of a basement assembled without form removal.
Fig. 3 is another angular schematic view of fig. 2.
Fig. 4 is a schematic structural view of a prefabricated slab in the advanced water stop construction process of the basement exterior wall post-cast strip without form removal.
FIG. 5 is a diagram of an embodiment of a construction process for advanced water stop of a post-cast strip of an exterior wall of a basement assembled without form removal according to the present application.
Detailed Description
The application will be further described with reference to the drawings and examples.
The conception, specific structure, and technical effects produced by the present application will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present application. It is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present application based on the embodiments of the present application. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the application can be interactively combined on the premise of no contradiction and conflict.
The traditional construction technology of the post-pouring strip of the outer wall is late in closing time, construction procedures such as outer wall waterproofing and fertilizer tank backfilling cannot be intervening in time, fertilizer tank dewatering is required to be continuously carried out, construction cost is high, and anti-seepage effect is poor after the post-pouring strip is formed. In order to solve the problems, an advanced water-stopping construction process is needed, the outer wall water-proof and fertilizer groove backfilling working procedures are arranged in front, and long-time waiting for the sealing of the outer wall post-pouring belt is not needed. According to the application, the prefabricated precast slabs are arranged at the post-pouring belt positions of the outer wall, so that a construction working surface is provided for outer wall waterproofing and fertilizer groove backfilling, the working procedures are advanced, the outer wall waterproofing is integrally formed at one time, the construction period can be saved, the waterproofing quality is improved, and the leakage rate of the post-pouring belt of the basement outer wall is reduced.
Specifically, referring to fig. 1, 2 and 3, as shown in the drawings, the application provides a basement exterior wall post-pouring strip advanced water stop construction process free of form removal, which comprises the following steps:
s10, concrete casting is carried out on the outer wall 1, a post-cast strip 2 is reserved, and a sleeve 4 is preset in the wall body of the outer wall 1.
S20, hoisting the precast slab 3 to the post-cast strip 2, and fixing the precast slab at the post-cast strip 2 through the sleeve 4. The prefabricated panels 3 are prefabricated in batch in a factory and transported to a construction site when required for construction. Compared with the prefabricated plate 3 produced on the construction site, the prefabricated plate 3 can be ensured to be uniform in size, errors caused by artificial manufacturing can be avoided, and time can be greatly saved. The precast slab 3 is made of concrete.
S30, coating waterproof paint 5 on the outer wall 1 and the precast slab 3. The waterproof coating 5 is a polyurethane waterproof coating. The post-pouring belt 2 is sealed in advance through the precast slab 3, the waterproof construction of the outer wall 1 can be advanced before the fertilizer groove backfilling and the post-pouring belt 2 pouring, the overall project progress can be greatly improved, and the potential safety hazard of deep foundation pit engineering is reduced. And the direct contact of the outer wall 1 steel bars and various external complex environments is avoided, so that the pollution and corrosion of the steel bars are slowed down, the bond strength of the outer wall concrete body and the steel bars is ensured, and the construction quality is ensured.
S40, backfilling the fertilizer groove and pouring the post-pouring belt.
Compared with the traditional post-pouring strip construction technology, the method provided by the application has the advantages that the post-pouring strip advanced water stop process fertilizer groove backfilling is not required to wait for the post-pouring strip pouring to finish, the construction of the waterproof and waterproof protective layer is finished, and the outer frame can be removed and the fertilizer groove can be backfilled in a large area. The project overall progress can be greatly improved through the front arrangement and the insertion of the outer frame dismantling and the fertilizer groove backfilling two procedures, and the potential safety hazard of deep foundation pit engineering is reduced.
Because the area of the post-cast strip is larger, correspondingly, if the precast slab is manufactured into a whole slab, the area is also larger, and the large-area precast slab can have the problem of difficult transportation and hoisting. To this end, the prefabricated panels provided in the present application include a head panel, a tail panel and a target. The head board, the target board and the tail board are sequentially installed from the bottom to the top of the outer wall, bolt holes 7 (shown in fig. 4) are formed in the head board, the target board and the tail board, and the head board, the target board and the tail board are inserted into the bolt holes and the sleeve through bolts to fixedly install the prefabricated board and the outer wall. Through divide into three with the prefabricated plate, can reduce the transport and the hoist and mount degree of difficulty of prefabricated plate, and the prefabricated plate divide into three convenient prefabricated plates and store at the job site, need not to reserve the regional prefabricated plate of storing in a large scale, has reduced the construction degree of difficulty. Furthermore, each batch of incoming precast slabs needs to be carefully checked, written records are formed, and the conditions of the size, appearance quality, flatness, perpendicularity and the like of the precast slabs are recorded in detail. The perpendicularity and flatness errors meet the requirements; the appearance quality must not have obvious defect, is defective and repairable, and can be accessed after repairing and qualified by supervision and construction party acceptance. If the pre-buried sleeve of the outer wall structure deviates, the plane position deviation of the precast slab and the pre-buried sleeve is larger, when the bolt cannot be installed, the deviation of the pre-buried sleeve is ascertained, related data are recorded, bolt hole points are relocated on the precast slab, a round hole is formed in the bolt hole points, the bolt enters the pre-buried sleeve, and the precast slab is screwed down and fixed. The original reserved bolt holes are plugged by waterproof mortar, and the surface is waterproof and reinforced.
Further, before the precast slab is hoisted in the step S20, quality defects such as die explosion, honeycomb, pitting surface and the like in a certain distance on two sides of the post-cast strip of the outer wall are repaired, and the requirements on flatness and perpendicularity of the base surface of the outer wall are ensured. And (3) cleaning the base surface slurry, finding out the embedded points of the sleeve one by one, checking the size of the point, and ensuring that the prefabricated plate can be installed smoothly at one time.
Further, the hoisting process of the prefabricated plate in the method provided by the application comprises the following steps:
s21, the hoisting site is guaranteed to be provided with three subareas, namely a head plate stacking area, a target plate stacking area and a tail plate stacking area. After prefabricated slabs are prefabricated in advance in a factory, the prefabricated slabs are transported to a construction site when construction is needed, stacked according to three subareas, and the corresponding prefabricated slabs are selected from the three subareas when the corresponding prefabricated slabs are used.
S22, hoisting the precast slab, reserving enough construction working surfaces, and adjusting double-row outer scaffold at the fertilizer groove; and the positions of two sides of the post-pouring belt of the outer wall pop up marked lines on the horizontal rods of the outer frame from top to bottom. The horizontal rods are cut along the positions of the marked lines, and other rod pieces between the two marked lines are adjusted or removed, so that a certain space is reserved for hoisting the precast slab left and right.
S23, hoisting the head plate by adopting a long transverse hanging beam. In the hoisting process, soft elastic materials are adhered to four sides of two sides of the precast slab, so that the slab body is prevented from being rubbed with an outer wall or a support hair or colliding to cause damage; and the precast slab slowly descends from the top of the sill table and is slowly adjusted, when the precast slab approaches the basement floor surface, the precast slab is slightly pushed by an installer in an auxiliary manner to perform preliminary positioning according to the positioning line, and the precast slab is guided by an operator to fall along a wall body, so that the bottom of the head slab is embedded into the brick sill table. After the head plate is in place, the bolts begin to be fastened. The installation principle is as follows: the fastening is performed in sequence in the middle, the two sides, the opposite angles and the clockwise direction and in stages.
S24, installing the targets and the tail plates, wherein the targets are directly erected on the end part of the head plate and are installed one by one from bottom to top.
S25, filling and compacting gaps between the precast slabs and the sill, between the precast slabs and the outer wall structure and between the precast slabs and the outer wall structure by waterproof mortar; the waterproof mortar at the junction corner of the top of the brick ridge platform and the precast slab should be provided with 45-degree slope feet.
Because the head plate, the target plate and the tail plate are sequentially installed along the outer wall from bottom to top, the head plate and the target plate do not need to consider the problem of matching the height of the post-cast strip, the tail plate is used as the last installed plate, the height corresponding to the post-cast strip is needed, and in order to ensure that the tail plate is firmly fixed, the tail plate and the last target plate are integrally fixed by adopting 14a channel steel through three bolts.
In addition, before the outer wall is poured in the step S10, the contact surface of the embedded sleeve and the outer wall template is tightly attached, so that concrete slurry is prevented from penetrating into the pipe root of the embedded part during concrete pouring. Meanwhile, when concrete is poured and rammed, the vibrating rod is prevented from being in direct contact with the embedded sleeve, so that the embedded sleeve is prevented from being damaged or deviated under the action of the vibrating rod.
Further, referring to fig. 5, a base layer treatment is further performed between step S10 and step S20, wherein the base layer treatment is to construct a concrete sill 8 in the upstream surface direction of the outer wall guide wall 101, a gap is reserved between the concrete sill 8 and the outer wall guide wall 101, and the outer surface of the concrete sill 8 is smoothed and calendered by waterproof mortar 9.
In addition, the construction process for brushing the waterproof paint on the outer wall and the prefabricated plate in the step S30 in the application comprises the following steps:
s31, lining glass fiber gridding cloth at two ends of the joint of the prefabricated plate and the outer wall structure, and adding a single-component polyurethane waterproof coating layer.
S32, after the additional waterproof layer is solidified (the detection method is based on that the finger is not stuck to the hand), large-surface waterproof construction is carried out. The coating directions are mutually perpendicular, the waterproof coating is uniformly coated for one time, and the glass fiber net is immediately pasted, when the glass fiber net is pasted, the glass fiber net is spread and pressed flatly, is tightly attached to the lower coating, and at least one layer of coating is coated on the surface, so that the thickness of the glass fiber net reaches the design requirement.
S33, arranging temporary water supply pipes at two ends of a post-pouring belt at the top of the basement outer wall, and performing a 24-hour water spraying test; periodically inspecting leakage condition of the post-pouring zone of the basement outer wall, finding out reasons, recording leakage points, and adopting corresponding measures to solve the problems.
After the prefabricated plate is installed and the waterproof mortar is filled, the waterproof basal plane should be checked again to avoid the existence of clear water, floating pulp and screw rods, and if the floating pulp and screw rods exist, the water, the floating pulp and the screw rods should be removed.
The thickness of the single-component polyurethane waterproof coating film meets the design and specification requirements, and the detection method comprises the following steps: needle measurement or cutting of 20X 20mm samples was performed with vernier calipers. After the single-component polyurethane waterproof coating is completely dried for 2 days, the next working procedure construction can be carried out, and the protection of a coating waterproof layer should be paid attention to during construction so as to avoid the artificial damage of the waterproof layer.
In addition, in the step S40, the fertilizer groove backfilling and the outer wall post-pouring belt pouring are performed simultaneously, so that the pressure consistency of the two sides is ensured. And when the fertilizer slot backfilling and the outer wall settlement post-pouring belt pouring cannot be performed simultaneously, the fertilizer slot backfilling is layered and constructed in a segmented mode, the thickness of each layer is not more than 500mm, in the backfilling process, the condition of the post-pouring belt precast slab is observed, and if abnormal conditions occur, the backfilling work is immediately stopped. After the concrete structures on two sides of the post-cast strip meet the specification and design requirements, the post-cast strip can be closed. Shrink post-cast strip: the concrete age at the two sides reaches 60 days, and the concrete is sealed after design consent; sedimentation post-cast strip: sedimentation observations were provided 14 days after the main structure roof was poured and closed after design approval. In the pouring process of the post-pouring belt, the vibrating rod is not in direct contact with the precast slab and the wood formwork, so that the damage of components and slurry leakage are prevented. After the concrete ages at two sides of the post-cast strip meet the design and specification requirements, the precast slab serves as a template of an upstream surface, a unilateral formwork supporting process is adopted by the water surface, casting construction of the post-cast strip of the outer wall is carried out, and the floor slab is used for demarcating, so that one-time casting molding is not more than one structural layer.
Compared with the traditional construction technology of the external wall post-pouring zone, the method provided by the application has obvious advantages in the aspects of quality impression, construction period progress, economic benefit and the like. And to a certain extent, before pouring of the post-pouring strip, the external wall reinforcing steel bars are prevented from being in direct contact with various external complex environments, the pollution and corrosion of the reinforcing steel bars are slowed down, the bond strength of the external wall concrete body and the reinforcing steel bars is ensured, and the construction quality is ensured. The outer wall structure and the post-pouring zone are waterproof and formed at one time, waterproof quality is guaranteed, leakage is obviously reduced, and quality impression is obviously improved. Meanwhile, the fertilizer groove backfilling is not required to wait for pouring of the post-pouring belt to finish, and the outer frame can be detached and the fertilizer groove can be backfilled in a large area after the waterproof and waterproof protection layer is constructed. The project overall progress can be greatly improved through the front arrangement and the insertion of the outer frame dismantling and the fertilizer groove backfilling two procedures, and the potential safety hazard of deep foundation pit engineering is reduced.
In the traditional construction process of the external wall post-pouring belt, the upstream surface of the belt body cannot be sealed, the water is exposed for a long time, and once the fertilizer tank is filled with water, the water is poured into a building basement, so that a water suction pump is required to be reserved, and a special person is arranged to perform irregular inspection to continuously drain water. The method provided by the application can avoid the cleaning cost generated in the garbage sundries and the pumping and cleaning cost generated when construction water, rainwater and the like enter the basement by the conventional method, and further saves the construction measure cost and project management cost.
While the preferred embodiment of the present application has been described in detail, the present application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present application, and the equivalent modifications or substitutions are included in the scope of the present application as defined in the appended claims.
Claims (10)
1. The basement exterior wall post-pouring strip advanced water-stopping construction process free of form removal is characterized by comprising the following steps of:
s10, pouring outer wall concrete, reserving a post-pouring belt and presetting a sleeve in an outer wall body;
s20, hoisting the precast slab to a post-cast strip, and fixing the precast slab at the post-cast strip through a sleeve;
s30, coating waterproof paint on the outer wall and the precast slab;
s40, backfilling the fertilizer groove and pouring the post-pouring belt.
2. The advanced water-stopping construction process of the basement exterior wall post-cast strip free of form removal and assembly according to claim 1 comprises the following steps: the precast slab comprises a head slab, a tail slab and at least one target slab; the head board, the target board and the tail board are sequentially installed from the bottom to the top of the outer wall, bolt holes are formed in the head board, the target board and the tail board, and the head board, the target board and the tail board are inserted into the bolt holes and the sleeve through bolts to achieve fixed installation of the prefabricated board and the outer wall.
3. The disassembly-free assembled basement exterior wall post-cast strip advanced water stop construction process according to claim 2, wherein the construction process is characterized in that: and the base layer treatment is to build a concrete sill in the upstream surface direction of the outer wall guide wall, reserve a gap between the concrete sill and the outer wall guide wall and trowelling and calendaring the outer surface of the sill by waterproof mortar.
4. The disassembly-free assembled basement exterior wall post-cast strip advanced water stop construction process according to claim 1, wherein the construction process is characterized in that: before the precast slab is hoisted in the step S20, repairing quality defects such as explosion mold, honeycomb, pitting surface and the like within a certain distance on two sides of the post-cast strip of the outer wall, and ensuring the flatness and perpendicularity requirements of the base surface of the outer wall; and (3) cleaning the base surface slurry, finding out the embedded points of the sleeve one by one, checking the size of the point, and ensuring that the prefabricated plate can be installed smoothly at one time.
5. The process for advanced water stop construction of the basement exterior wall post-cast strip without form removal according to claim 3, wherein the hoisting process of the precast slab comprises the following steps:
s21, a lifting site is provided with three subareas at least, namely a head plate stacking area, a target plate stacking area and a tail plate stacking area;
s22, hoisting the precast slab, reserving enough construction working surfaces, and adjusting double-row outer scaffold at the fertilizer groove; ejecting marked lines on the horizontal rods of the outer frame from top to bottom at the two sides of the post-pouring belt of the outer wall; cutting horizontal rods along the positions of the marked lines, and adjusting or dismantling other rod pieces between the two marked lines to ensure that a certain space is left and right for hoisting the precast slab;
s23, hoisting the head plate by adopting a long transverse hanging beam; in the hoisting process, soft elastic materials are adhered to four sides of two sides of the precast slab, so that the slab body is prevented from being rubbed with an outer wall or a support hair or colliding to cause damage; slowly descending the precast slab from the top of the sill, slowly adjusting, and when the precast slab approaches the basement floor surface, carrying out preliminary positioning by assisting a installer to lightly push the precast slab according to a positioning line, guiding the precast slab to fall along a wall by an operator, and embedding the bottom of the head slab into the brick sill; after the head plate is in place, starting to fasten the bolt;
s24, installing a target and a tail plate; the target is directly erected at the end part of the head plate and is installed one by one from bottom to top;
s25, filling and compacting gaps between the precast slabs and the sill, between the precast slabs and the outer wall structure and between the precast slabs and the outer wall structure by waterproof mortar; the waterproof mortar at the junction corner of the top of the brick ridge platform and the precast slab should be made into an R angle or a 45-degree slope toe.
6. The construction process for advanced water stop of the basement exterior wall post-cast strip without form removal according to claim 1, wherein the construction process for painting waterproof paint on the exterior wall and the prefabricated plate in the step S30 comprises the following steps:
s31, lining glass fiber gridding cloth at two ends of the joint of the prefabricated plates and the outer wall structure, and adding a single-component polyurethane waterproof paint layer;
s32, after the additional waterproof layer is solidified, large-surface waterproof construction is carried out; the coating directions are mutually perpendicular, firstly, uniformly coating waterproof paint for one time, and immediately pasting a glass fiber net, when the glass fiber net is pasted, spreading and pressing are smooth, the glass fiber net is tightly attached to the lower layer of paint, and then, at least one layer of paint is coated on the surface of the glass fiber net to enable the glass fiber net to reach the thickness required by design;
s33, arranging temporary water supply pipes at two ends of a post-pouring belt at the top of the basement outer wall, and performing a 24-hour water spraying test; periodically inspecting leakage condition of the post-pouring zone of the basement outer wall, finding out reasons, recording leakage points, and adopting corresponding measures to solve the problems.
7. The disassembly-free assembled basement exterior wall post-cast strip advanced water stop construction process according to claim 1, wherein the construction process is characterized in that: in the step S40, the fertilizer groove backfilling and the outer wall post-pouring belt pouring are performed simultaneously, so that the pressure consistency of two sides is ensured; and when the fertilizer groove backfilling and the outer wall settlement post-pouring belt pouring cannot be performed simultaneously, the fertilizer groove backfilling is subjected to layered and segmented construction, the thickness of each layer is not more than 500mm, in the backfilling process, the condition of the post-pouring belt precast slab is observed, and if abnormal conditions occur, the backfilling work is immediately stopped.
8. The disassembly-free assembled basement exterior wall post-cast strip advanced water stop construction process according to claim 1, wherein the construction process is characterized in that: the precast slab is made of concrete.
9. The disassembly-free assembled basement exterior wall post-cast strip advanced water stop construction process according to claim 1, wherein the construction process is characterized in that: before the outer wall is poured in the step S10, the contact surface of the embedded sleeve and the outer wall template should be closely attached, so that concrete slurry is prevented from penetrating into the pipe root of the embedded part when concrete is poured and rammed.
10. The disassembly-free assembled basement exterior wall post-cast strip advanced water stop construction process according to claim 9, wherein the construction process is characterized in that: when concrete is poured and rammed, the vibrating rod is prevented from being in direct contact with the embedded sleeve, so that the embedded sleeve is prevented from being damaged or deviated under the action of the vibrating rod.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310753104.9A CN116771115A (en) | 2023-06-25 | 2023-06-25 | Form-removal-free assembled basement outer wall post-pouring strip advanced water stop construction process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310753104.9A CN116771115A (en) | 2023-06-25 | 2023-06-25 | Form-removal-free assembled basement outer wall post-pouring strip advanced water stop construction process |
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| CN116771115A true CN116771115A (en) | 2023-09-19 |
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