CN114351852B - Basement outer wall post-pouring belt assembled maintenance water stop structure and construction method thereof - Google Patents

Abstract

The prefabricated component consists of a left folding plate and a right folding plate, and the lower ends of the two folding plates and a base counter-ridge at the post-pouring zone of the basement outer wall are sealed and installed into a whole; the front ends of the two folding plates are close to each other, clamped and sealed and fixed; the rear ends of the two folding plates are outwards opened and are provided with water stops and tie bars, and the two folding plates are integrated with peripheral reinforcing steel bars of the basement through the water stops and the tie bars after being bound. The basement outer wall post-pouring belt assembled maintenance water stop structure and the construction method thereof provided by the invention can improve the water resistance, are quick in construction, good in water resistance and strong in soil pressure resistance.

Description

Basement outer wall post-pouring belt assembled maintenance water stop structure and construction method thereof

Technical Field

The invention relates to the field of building construction, in particular to a basement outer wall post-pouring strip assembly type maintenance water stop structure and a construction method thereof.

Background

The post-cast strip of the building basement is cast after the building main body structure is capped. The arrangement of the post-cast strip not only effectively prevents the occurrence of cracks and fissures of the mass concrete of the basement caused by one-time pouring, but also enables the main structure of the building to release internal force before capping, and avoids the cracking or damage of the wall body caused by uneven settlement of the building due to the internal force. The method comprises the steps of reserving a post-pouring belt with the width of 60-80 cm when an outer wall is poured, and building a C-shaped enclosing wall outside the post-pouring belt to wrap the post-pouring belt. A large space is reserved between the C-shaped enclosing wall and the outer wall, so that workers can conveniently enter the construction operation, wall surface plastering, waterproof coiled material paving and formwork supporting operation are performed in the inner space according to design requirements, and meanwhile, waterproof paint needs to be brushed on the inner surface and the outer surface of the C-shaped enclosing wall in a batch mode to make waterproofing. The traditional C-shaped enclosing wall has a certain effect on waterproof soil blocking, but the construction process is complex, the contact part of the C-shaped enclosing wall and the basement outer wall is lap joint, waterproof is weak, and the C-shaped enclosing wall is easy to be extruded and deformed or even damaged when being subjected to larger soil pressure, so that the whole construction process has more working procedures, the construction efficiency is lower, and the post-pouring belt formwork is complex.

Disclosure of Invention

The invention aims to solve the technical problem of providing a basement outer wall post-pouring strip assembly type maintenance water stop structure and a construction method thereof, which can improve the water resistance between a component and the basement outer wall and the overall stability and the water resistance of the outer wall post-pouring strip; in addition, compared with the traditional wall building method, the construction speed is fast, the waterproof performance is good, the soil pressure resistance is strong, the plastering waterproofing operation of the interior of the enclosure space can be omitted, and the labor and the construction period are saved.

In order to solve the technical problems, the invention adopts the following technical scheme:

the prefabricated component consists of a left folding panel and a right folding panel, wherein the lower ends of the two folding panels and a base counter-ridge at the post-pouring zone of the basement outer wall are sealed and installed into a whole; the front ends of the two folding plates are close to each other, clamped and sealed and fixed; the rear ends of the two folding plates are outwards opened and are provided with water stops and tie bars, and the two folding plates are integrated with peripheral reinforcing steel bars of the basement through the water stops and the tie bars after being bound.

The overall appearance of the prefabricated part is of an eight-shaped structure, the height of the prefabricated part is matched with the basement layer height, and the number of the prefabricated parts is matched with the basement layer number.

And a section of saw-tooth structural surface is arranged on the inner side of the front end of each of the two folding plates, and a gap is reserved between the two saw-tooth structural surfaces when the two folding plates are spliced and installed, and asphalt ointment is filled or coated in the gap.

And the two folding plates are reserved with pore passages, and the screw rod penetrates through the reserved pore passages to fix the two folding plates.

The span of the rear ends of the two folded plates is larger than the width of the post-cast strip, and the rear end parts of the two folded plates are clamped into the metal rods.

The upper end of the base back ridge is provided with a groove, asphalt ointment is fully coated in the groove, and the base back ridge is in sealing connection with the lower end of the folding plate through the asphalt ointment.

The upper end of the folding plate is provided with a groove; when the basement is a single layer, grouting and trowelling the groove at the upper end of the folding plate; when the basement is multi-layer, the lower ends of the folding plates of the upper layer are connected in a sealing way through asphalt ointment in the grooves at the upper ends of the folding plates of the lower layer.

Holes are formed in the upper end of the base reverse ridge and the upper end and the lower end of the folding plate, connecting ribs are inserted into the holes, and the base reverse ridge is connected with the folding plate and the upper and lower adjacent folding plates are connected and positioned through the connecting ribs.

The holes are arranged in the grooves at the upper ends of the base back ridge and the folding plate and at the positions of the lower ends of the folding plate corresponding to the grooves of the base back ridge.

A basement outer wall post-pouring strip construction method comprises the following steps:

step1: determining the size and manufacturing of a component; according to the construction drawing and the construction site condition comprehensive consideration, determining the length data of the folded panel, and then carrying out the reinforcement, pouring and maintenance manufacturing processes of the components in a prefabrication factory;

step2: transporting; after the folding plate is manufactured, loading and transporting to a construction site, and carrying out the next procedure;

step3: brushing waterproof paint on the sawtooth structure surface; after the component is transported to a construction site, brushing the sawtooth structure surface of the component with asphalt ointment, and carrying out the next working procedure before solidification;

step4: butt joint and folding of the components; the left folding panel and the right folding panel are spliced together in a hoisting mode, screws are inserted into the reserved pore canals and screwed up, and asphalt ointment overflowed from the sawtooth structure surface is scraped and smoothed; in addition, the straight section at the tail end of the inner side of the folding panel is clamped by a plurality of metal rods, so that the integrity of the component is improved, the hoisting is convenient, and the next working procedure is carried out;

step5: brushing and dowel bars of the base reverse ridge; firstly, asphalt ointment is filled into holes on the base reverse ridge, and when most of the space in the holes is filled, the filling is stopped, connecting ribs are inserted, and the connecting ribs are ensured to be basically vertical. After all the connecting ribs are inserted, brushing asphalt ointment on the grooves to ensure that the height of the brushed grooves is slightly higher than the height of concrete surfaces at two sides, and then entering the next working procedure;

step6: hoisting the components, filling paste into holes at the bottom and mounting; the lifting hook or the steel wire rope is hooked or sleeved on the lifting hole in the upper direction of the top surface of the folding plate by using the tower crane or the automobile crane for lifting; after the base is lifted to a proper height right above the base counter-sill, filling or extruding asphalt ointment into holes on the bottom surface of the folding plate, gradually lowering the whole folding plate downwards after all holes are extruded, gradually lowering the folding plate until all holes are aligned, gradually lowering the folding plate until the bottom surface of the folding plate completely fits the base counter-sill, and removing a steel wire rope or a lifting hook on the top surface, and finishing the hoisting and installing operation of the prefabricated part when the basement is a layer; when the basement is provided with two or more layers, the upper layer prefabricated part is required to be lifted and installed above the lower layer prefabricated part, at the moment, the top surface of the folding panel positioned at the lower part is required to be subjected to asphalt ointment brushing and dowel bar brushing, the treatment method is consistent with the reverse ridge of the base, and the lifting operation is the same as the previous one; entering the next working procedure after finishing;

step7: supporting a formwork of an outer wall of a basement; binding reinforcing steel bars and supporting templates on the reverse ridge of the outer wall; when binding the steel bars, the multi-row tie bars of the folding panel are firmly bound with the multi-row tie bars, and templates are supported on two sides; when the mould is supported, a template is not used for supporting the mould at the section, and a steel wire mesh is used for supporting the mould; a water stop strip vertical to the sections is arranged in the middle of the two sections before the steel wire mesh is used for supporting the mould, the steel wire mesh is arranged after the water stop strip is arranged, and the next procedure is carried out after the water stop strip is arranged;

step8: pouring concrete and removing the mould; pouring concrete in the supported templates, vibrating the templates during pouring, and preventing segregation; curing for a period of time after pouring is finished, removing the die after the strength reaches the requirement, and allowing the steel wire mesh at the section 23 to enter the next procedure after finishing the pouring;

step9: waterproof treatment of the outer surface of the basement outer wall and the folding plate; firstly, asphalt ointment is coated at the joint of each interface of the outer surface of the folding plate, asphalt ointment is coated at the internal corner of the joint of the folding plate and the outer wall of the basement, and a waterproof coiled material is paved after the coating is finished. Waterproof coiled materials are fully paved on the outer surfaces of the basement outer wall and the folding plate, so that the waterproof performance of the basement outer wall is improved. Then entering the next working procedure;

step10: backfilling outdoor earthwork; backfilling earthwork in the outdoor foundation pit, compacting according to requirements, and carrying out the next working procedure after the backfilling is finished;

step11: supporting and pouring a basement outer wall post-pouring belt; the working procedure is to wait until the main structure of the ground is capped and then to construct; when in construction, the inner side of the post-pouring strip of the basement outer wall is firstly provided with a template, concrete is poured after the template is arranged, the template and the near-triangle space between the basement outer wall are poured together, and vibration is performed while pouring, so that segregation is prevented. After pouring is completed, the top surface of the folded plate is trowelled and finished by concrete or mortar.

The invention relates to a basement outer wall post-pouring belt assembled maintenance water stop structure and a construction method thereof, which have the following technical effects:

1) By adopting the prefabricated components, the whole structure is simple in modeling, the components are directly hoisted after being transported to a construction site, and because the internal space and the post-pouring belt are poured together, a series of complicated waterproof operations such as the internal plaster of the traditional enclosure space are omitted, the construction period of the basement is shortened, the earthwork is backfilled in advance, the construction efficiency is greatly improved, and the construction period can be saved by about 15-30 days.

2) Through pouring the base anti-bank into an organic whole with the outer wall anti-bank, prefabricated component rear end is connected with outer wall reinforcing bar through the waterstop, tie bar and finally pour into an organic whole, prefabricated component lower extreme adopts recess, pitch oleamen and connecting rib etc. to fix a position the assembly and waterproof with the outer wall anti-bank, prefabricated component front end mutually through sawtooth structural surface joint and utilize pitch oleamen waterproof, make the whole structure appear triangle-shaped like this and form wholly with the basement outer wall like this, the body is thick firm, the side pressure ability that the backfill brought around resistant is strong, in addition, the sawtooth form structural gap of reserving in the centre, can effectively prevent the internal force destruction when subsideing non-uniformity.

3) The device can be used for preventing water of a post-pouring belt structure of an outer wall of a basement by reasonable design, can also be used for a multi-layer basement, can be freely assembled according to actual needs, and has strong adaptability.

4) And waterproof paint, namely asphalt ointment, is coated on each interface, so that the infiltration channel of water in soil and even underground water is effectively eliminated.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a schematic view of a reinforcement of a folding panel according to the present invention;

FIG. 2 is a schematic view of a formwork for a folding panel installation and a basement outer wall of the invention;

FIG. 3 is a schematic diagram showing the completion of pouring the basement exterior wall according to the present invention;

FIG. 4 is a schematic view of a basement post-cast strip formwork of the present invention;

FIG. 5 is a schematic illustration of post-cast strip casting completion of the present invention;

FIG. 6 is a top view of a folding panel of the present invention;

FIG. 7 is a schematic view of a folding metal bar support (top not shown) of the present invention;

FIG. 8 is a side elevational view of a folding panel of the present invention;

FIG. 9 is a schematic view of a top surface dowel bar and asphalt-coated ointment of the present invention (suitable for use in a multi-story basement);

FIG. 10 is a schematic view of a base flip-chip of the present invention;

FIG. 11 is a schematic view of a base inverted ridge dowel bar of the present invention;

FIG. 12 is a schematic view of a base inverted ridge dowel bar and asphalt coating ointment of the present invention;

FIG. 13 is a schematic view of a folding panel installation of the present invention;

FIG. 14 is a schematic view of the top construction of the folding panel of the present invention;

fig. 15 is a schematic top-multi-layer stacking view of a folding top panel (suitable for multi-layer basements) of the present invention.

In the figure: the concrete asphalt mortar comprises an outer wall inverted ridge 1, a base inverted ridge 2, a groove 3, holes 4, connecting ribs 5, asphalt ointment 6, a folding panel 7 and a counter-pulling screw rod 8; a water stop 9, a sawtooth structural surface 10; the concrete pile comprises a rough surface 11, tie bars 12, square lifting holes 13, reserved pore channels 14, steel bar lifting rings 15, steel wire meshes 16, templates 17, horizontal steel bars 18, longitudinal steel bars 19 and basement outer walls 20; backfill 21; metal rod 22, section 23.

Detailed Description

A basement outer wall post-pouring belt assembled maintenance water stop structure mainly comprises prefabricated components and a base reverse ridge 2.

As shown in fig. 14, the prefabricated part comprises a folding plate 7, the folding plate 7 is divided into a left piece and a right piece, and the appearance is spliced together to form an eight shape. The height of the folding plate 7 is basically the same as the basement layer height, and when the prefabricated component is manufactured, the height of the prefabricated component can be determined according to the basement layer height in a construction drawing, and the quantity of the prefabricated component can be determined according to the basement layer number.

As shown in fig. 3 to 5, the inner side surface of the front end of the folding plate 7 is provided with a section of saw-tooth structural surface 10, and a gap is reserved between the two folding plates 7 when the folding plates are spliced and installed, so that the folding plates have the function of preventing the building structure from being damaged by internal force generated when the settlement stress is uneven. The width of the sawtooth structural surface 10 ranges from 15 cm to 30cm, the gap width is not more than 2cm, and the middle is filled or fully coated with flexible waterproof material asphalt ointment 6, so that the waterproof effect is achieved.

As shown in fig. 8 to 9, a reserved duct 14 is reserved in the middle of the plate body of the folding plate 7, and the left folding plate 7 and the right folding plate 7 are screwed and fixed after the duct penetrates through the screw rod 8. Benefits of fixation by screw 8: firstly, ensure the compaction of the asphalt ointment 6 in the middle of the two folding plates 7, and secondly, ensure the safety and reliability in the transportation and hoisting process. Preferably, the reserved holes 14 are arranged on the central axis of the zigzag structural section, are uniformly arranged along the height, have the number of not less than 2, and are inserted in the middle to screw and fix the pull screw rod 8.

As shown in fig. 1 to 5, the length of the inner side of the left and right folding plates 7 near the straight end of the wall body is about 5cm. The end surfaces of the left folding panel 7 and the right folding panel 7 are respectively provided with a water stop 9 (a steel plate water stop) and a plurality of rows of tie bars 12. Wherein, the spacing of each row of the tie bars 12 is not more than 30cm, phi 8, and each row of tie bars is two and symmetrical with the water stop 9 in the middle. The plurality of rows of tie bars 12 are integrated with horizontal steel bars 18 and longitudinal steel bars 19 of the basement outer wall through binding and then pouring.

The steel plate water stop belt and the plurality of rows of tie bars can be integrated with the exterior wall steel bars of the basement after being bound, and an approximate triangle space is formed between the steel plate water stop belt and the exterior wall of the basement for later casting with the post-cast belt to form an integer so as to improve the overall stability and the waterproof performance of the post-cast belt of the exterior wall. The water stop belt is arranged in the middle of the tail end surface of the member, so that the waterproofness between the member and the basement outer wall can be improved.

As shown in fig. 9, the lower end and the end face of the sawtooth structure on the inner side of the folding panel 7 are rough surfaces 11 with uneven surfaces, and the integrity is increased when concrete is poured in the later space.

As shown in fig. 7, the metal rods 22 are clamped at the right-angle end of the tail end of the folding plate 7, the number of the metal rods 22 is 2-4, and the metal rods are clamped at proper positions along the height for improving the overall stability and safety of the structure of the folding plate 7, ensuring the safety and reliability in the hoisting process and being detachable after the later field installation is completed.

As shown in fig. 3 to 5, the span between the two folding plates 7 is slightly wider than the post-cast strip width, each side is slightly wider by about 5cm, and the obtuse angle formed by the straight section and the inclined section at the inner side end of the two folding plates 7 ranges from 120 degrees to 150 degrees.

As shown in fig. 13, the base counter ridge 2 is cast together with the outer wall counter ridge 1, and the shape of the base counter ridge is matched with that of the folding plate 7. The base back sill 2 becomes the base of the prefabricated component, and is convenient to construct and waterproof.

As shown in fig. 10, a groove 3 is respectively arranged on the left, right and middle of the base counter-ridge 2, and the cross section of the groove 3 can be rectangular or arc-shaped. Asphalt ointment 6 is fully coated in the groove 3, and the function of the asphalt ointment is to improve the waterproof and water-stopping performance between the contact surface of the base and the upper prefabricated part. The width of the groove 3 is not more than 5cm, the thickness is not more than 2.5cm, and the groove is arranged along the central axis of the back ridge and parallel to the edge.

As shown in fig. 8, the grooves 3 are arranged on the top surfaces of the left and right folding plates 7 in addition to the base counter ridge 2, and the grooves are uniformly shaped, formed, and the like.

As shown in fig. 6, 10 and 13, preferably, a plurality of holes 4 are formed in the left and right grooves 3 on the base counter-ridge 2 and the corresponding two grooves 3 on the top surfaces of the left and right folding panels 7, the holes 4 are located on the central axis of the grooves 3, and the holes 4 are not less than 3 and uniformly distributed along the grooves 3. The diameter of the hole 4 is 1-2.5 cm, the depth is not more than 25cm, and the connecting rib 5 can be inserted into the hole. The connection ribs 5 are inserted before the insertion, asphalt ointment 6 is filled into the holes until most of the holes are filled, and then the connection ribs 5 are inserted. When the connecting ribs 5 are inserted into the base anti-bank 2, the bottom surface of the folding plate 7 is also matched with holes 4 corresponding to the holes 4 in the groove 3 of the base anti-bank 2, and the holes are used for inserting the upper half part of the connecting ribs 5, so that the function of connecting the upper structure and the lower structure is achieved, and the positioning function is also achieved. Preferably, the asphalt ointment 6 is used for brushing the groove 3 after the connecting ribs 5 are inserted, so that the water resistance of the contact surface is improved.

For a single-layer basement, only one pair of folding plates 7 is used, the top surface is generally close to the ground or slightly higher than the ground, at the moment, the grooves 3 and the holes 4 on the top surface are filled with mortar for trowelling, and the top surfaces are trowelled together after the post-pouring belt and the triangular space grouting are completed. For a multi-layer basement, a plurality of pairs of corresponding folding plates 7 are needed, one layer corresponds to a pair, and the top surface of the folding plate 7 at the lower part except the top layer is required to be inserted with connecting ribs 5 and asphalt ointment 6, and the method is as same as that on the base counter sill 2.

As shown in fig. 13, square lifting holes 13 are arranged in the grooves 3 on the left and right top surfaces of the folding plate 7, the width and depth of the square lifting holes 13 are slightly larger than those of the grooves 3, and the square lifting holes are arranged at the position 2 along the central axis of the grooves 3 and are close to the turning position. The side length of the square lifting hole 13 is not more than 7cm, the depth is not more than 5cm, and a steel bar lifting ring 15 is arranged in the square lifting hole and is used for lifting and installing the folding plate 7.

A basement outer wall post-pouring strip construction method comprises the following steps:

step1: first, the size and fabrication of the components are determined. And determining the length and other data of the folded panel 7 according to the comprehensive consideration of the construction drawing and the construction site condition, and then carrying out the manufacturing processes of reinforcement, pouring, maintenance and the like of the components in a prefabrication factory.

Step2: and then transported. After the folding plate 7 is manufactured, loading and transporting to a construction site for the next process.

Step3: followed by the application of the waterproof coating to the serrated structure face 10. After the component is transported to a construction site, the sawtooth structure surface 10 is painted with asphalt ointment 6, and the next working procedure is carried out before solidification is completed.

Step4: the members are butt-jointed and closed. The left folding plate 7 and the right folding plate 7 are spliced together in a hoisting mode and the like, a counter-pulling screw rod 8 is inserted into a reserved pore canal 14 and screwed up, the asphalt ointment 6 overflowed from the sawtooth structure surface 10 is scraped and smoothed, in addition, the straight section at the tail end of the inner side of the folding plate 7 is clamped by a plurality of metal rods 22, the integrity of a component is improved, the hoisting is convenient, and then the next procedure is carried out.

Step5: and brushing and dowel bars of the base reverse ridge 2. Firstly, asphalt ointment 6 is poured into a hole 4 on a base counter-ridge 2, when most of the space in the hole is poured, the pouring is stopped, connecting ribs 5 are inserted, and the connecting ribs 5 are ensured to be basically vertical. After the connecting ribs 5 are completely inserted, the grooves 3 are painted with asphalt ointment 6, the painted height is ensured to be slightly higher than the height of concrete surfaces at two sides, and then the next working procedure is carried out.

Step6: hoisting the components, filling the bottom holes 4 with paste and installing. And the lifting hook or the steel wire rope is hooked or sleeved on the lifting hole 13 in the upper direction of the top surface of the folding panel 7 by using equipment such as a tower crane or an automobile crane for lifting. After the base is lifted to a proper height right above the base anti-bank 2, asphalt ointment 6 is poured or extruded into the holes 4 on the bottom surface of the folding plate 7, after all the holes 4 are extruded, the whole folding plate 7 is gradually put down, the holes 4 on the bottom surface are aligned with the connecting ribs 5 on the base anti-bank 2, after all the holes 4 are aligned, the folding plate 7 is gradually put down until the bottom surface is completely attached to the base anti-bank 2, and the installation of the component is completed, and the steel wire rope or the lifting hook on the top surface is removed, so that the lifting installation operation of a basement is realized. If the basement is a basement with two or more layers, the folding plate 7 is required to be hoisted and installed above the folding plate 7, at the moment, the top surface of the folding plate 7 positioned at the lower part is required to be coated with asphalt ointment 6 and dowel bar treatment, the base of the treatment method is consistent with the counter sill 2, and the hoisting operation is the same as before. And after finishing, entering the next working procedure.

Step7: and (3) supporting the formwork of the basement exterior wall 20. The counter sill 1 is provided with a reinforcing bar binding and a formwork 17 (shown in fig. 2). The multi-row tie bars 12 of the folding plate 7 are firmly bound with the tie bars during binding the steel bars, the templates 17 are supported on two sides, the templates are not needed to be supported at the section 23 during supporting, and the steel wire mesh 16 is used for supporting the templates. Before the steel wire net 16 is used for supporting the mould, a water stop 9 vertical to the sections 23 is arranged at the middle of the two sections 23, so that the interface waterproof performance is further improved. After the installation, the steel wire mesh 16 is arranged again, and the next procedure is carried out after the completion.

Step8: and (5) pouring concrete and removing the mould. Concrete is poured into the above-mentioned supported form 17, and vibrated during pouring. Preventing segregation. Curing for a period of time after pouring is finished, removing the die after the strength reaches the requirement, and allowing the steel wire mesh at the section 23 to enter the next working procedure after finishing the pouring.

Step9: the outer surface of the basement outer wall 20 and the outer surface of the folding plate 7 are waterproof. Firstly, asphalt ointment 6 is coated at the joint of each interface of the outer surface of the folding plate 7, asphalt ointment 6 is coated at the internal corner of the joint of the folding plate 7 and the basement outer wall 20, and waterproof coiled materials are paved after the coating is finished. The outer surfaces of the basement outer wall 20 and the folding plate 7 are fully paved with waterproof coiled materials, so that the waterproof performance of the basement outer wall is improved. And then entering the next working procedure.

Step10: and backfilling the outdoor earthwork 21. And (3) backfilling earthwork 21 in the outdoor foundation pit, compacting according to requirements (the top surface of the folded panel 7 is not filled with soil), and carrying out the next process after the backfilling is finished.

Step11: and (5) supporting and pouring the basement outer wall post-cast strip. The working procedure is to wait until the main structure of the ground is capped and then to carry out construction. During construction, the formwork 17 is firstly supported on the inner side of the post-pouring zone of the basement outer wall (as shown in fig. 4), concrete is poured after the formwork is supported, the formwork 7 and the near-triangle space between the basement outer wall 20 are poured together (schematic diagrams are shown in fig. 4-5), and vibration is performed while pouring, so that segregation is prevented. After pouring is completed, the top surface of the folding plate 7 is smoothed and dressed by concrete or mortar.

Claims (9)

1. A basement outer wall post-pouring strip construction method is characterized in that: the water stop structure comprises a prefabricated component, wherein the prefabricated component consists of a left folding plate (7) and a right folding plate (7), and the lower ends of the two folding plates (7) and a base counter-ridge (2) at the post-pouring zone of the basement outer wall are hermetically installed into a whole; the front ends of the two folding plates (7) are close to each other, clamped and sealed and fixed; the rear ends of the two folding plates (7) are outwards opened and are provided with a water stop belt (9) and a drawknot rib (12), and the two folding plates (7) are integrated with peripheral steel bars of the basement through the water stop belt (9) and the drawknot rib (12) after being bound;

the construction method of the basement outer wall post-pouring strip comprises the following steps:

step1: determining the size and manufacturing of a component; according to the construction drawing and the construction site condition, determining the length data of the folded panel (7), and then carrying out the reinforcement, pouring and maintenance manufacturing processes of the components in a prefabrication factory;

step2: transporting; after the manufacture of the folding plate (7) is completed, loading and transporting to a construction site, and carrying out the next procedure;

step3: brushing waterproof paint on the sawtooth structure surface; after the component is transported to a construction site, brushing the sawtooth structure surface (10) of the component with asphalt ointment (6), and carrying out the next working procedure before solidification;

step4: butt joint and folding of the components; the left folding plate (7) and the right folding plate (7) are spliced together in a hoisting mode, a screw (8) is inserted into the reserved pore canal (14) and screwed up, and the asphalt ointment (6) overflowed from the sawtooth structure surface (10) is scraped and smoothed; in addition, the straight section at the tail end of the inner side of the folding panel (7) is clamped by a plurality of metal rods (22), the integrity of the component is improved, the hoisting is convenient, and then the next procedure is carried out;

step5: brushing and dowel bars of the base reverse ridge; firstly, filling asphalt ointment (6) into holes (4) on a base counter-ridge (2), stopping filling when most of the space in the holes is filled, inserting connecting ribs (5), and ensuring that the connecting ribs (5) are basically vertical; after all the connecting ribs (5) are inserted, brushing the grooves (3) with asphalt ointment (6) to ensure that the height after brushing is slightly higher than the height of concrete surfaces at two sides, and then entering the next working procedure;

step6: hoisting the components, filling paste into holes at the bottom and mounting; the lifting hook or the steel wire rope is hooked or sleeved on the lifting hole (13) in the upper direction of the top surface of the folding panel (7) by using a tower crane or an automobile crane for lifting; after the lifting is carried out to a proper height right above the base counter-ridge (2), filling or extruding asphalt ointment (6) into holes (4) on the bottom surface of the folding plate (7), gradually lowering the whole folding plate (7) downwards after all the holes (4) are extruded, aligning the holes (4) on the bottom surface with connecting ribs (5) on the base counter-ridge (2), gradually lowering the folding plate (7) after all the holes (4) are aligned, and removing a steel wire rope or a lifting hook on the top surface until the bottom surface of the folding plate is completely attached to the base counter-ridge (2), and finishing the hoisting and installing operation of the prefabricated part when the basement is one layer; when the basement is provided with two or more layers, the upper layer prefabricated part is required to be lifted and installed above the lower layer prefabricated part, at the moment, the top surface of the folding panel (7) positioned at the lower part is required to be treated by brushing asphalt ointment (6) and dowel bars, the treatment method is consistent with that of the base counter-sill (2), and the lifting operation is the same as the previous one; entering the next working procedure after finishing;

step7: supporting a formwork of an outer wall of a basement; binding reinforcing steel bars and supporting templates (17) on the outer wall reverse ridge (1); when binding the steel bars, the multi-row tie bars (12) of the folding panel (7) are firmly bound with the multi-row tie bars, and templates (17) are supported on two sides of the multi-row tie bars; when the mould is supported, the mould is supported by a steel wire mesh (16) instead of a template at the section (23); a water stop strip (9) perpendicular to the sections (23) is arranged at the middle of the two sections (23) before the steel wire mesh (16) is used for supporting the mould, the steel wire mesh (16) is arranged after the water stop strip is arranged, and the next procedure is carried out after the water stop strip is arranged;

step8: pouring concrete and removing the mould; pouring concrete in the supported templates (17), vibrating during pouring, and preventing segregation; curing for a period of time after pouring is finished, removing the die after the strength reaches the requirement, and allowing the steel wire mesh at the section 23 to enter the next procedure after finishing the pouring;

step9: waterproof treatment of the outer surface of the basement outer wall and the folding plate; firstly, brushing asphalt ointment (6) at the joint of each interface of the outer surface of the folding plate (7), and brushing asphalt ointment (6) at the internal corner of the joint of the folding plate (7) and the basement outer wall (20), and paving waterproof coiled materials after brushing; the outer surfaces of the basement outer wall (20) and the folding plate (7) are fully paved with waterproof coiled materials, so that the waterproof performance of the basement outer wall is improved; then entering the next working procedure;

step10: backfilling outdoor earthwork; backfilling earthwork (21) in the outdoor foundation pit, compacting according to the requirement, and carrying out the next working procedure after the backfilling is finished;

step11: supporting and pouring a basement outer wall post-pouring belt; the working procedure is to wait until the main structure of the ground is capped and then to construct; when in construction, a template (17) is firstly supported on the inner side of the post-pouring strip of the basement outer wall, concrete is poured after the template is supported, and the template and the near-triangle space between the basement outer wall (20) are poured together, and vibration is performed while pouring, so that segregation is prevented; after pouring is completed, the top surface of the folded plate (7) is smoothed and dressed by concrete or mortar.

2. The basement exterior wall post-cast strip construction method according to claim 1, wherein the method comprises the following steps: the overall appearance of the prefabricated part is of an eight-shaped structure, the height of the prefabricated part is matched with the basement layer height, and the number of the prefabricated parts is matched with the basement layer number.

3. The basement exterior wall post-cast strip construction method according to claim 1 or 2, characterized by comprising the steps of: the inner sides of the front ends of the two folding plates (7) are respectively provided with a section of sawtooth structural surface (10), and when the two folding plates (7) are spliced and installed, gaps are reserved between the two sawtooth structural surfaces (10), and asphalt ointment (6) is filled or coated in the gaps.

4. The basement exterior wall post-cast strip construction method according to claim 1, wherein the method comprises the following steps: and a pore canal (14) is reserved on the two folding plates (7), and the screw (8) penetrates through the reserved pore canal (14) to fix the two folding plates (7).

5. The basement exterior wall post-cast strip construction method according to claim 1 or 2 or 4, characterized in that: the rear end span of the two folding plates (7) is larger than the post-pouring band width, and the rear end parts of the two folding plates (7) are clamped into the metal rods (22).

6. The basement exterior wall post-cast strip construction method according to claim 1, wherein the method comprises the following steps: the upper end of the base back-ridge (2) is provided with a groove (3), asphalt ointment (6) is fully coated in the groove (3), and the lower end of the base back-ridge (2) is connected with the lower end of the folding plate (7) in a sealing way through the asphalt ointment (6).

7. The basement exterior wall post-cast strip construction method according to claim 1, wherein the method comprises the following steps: the upper end of the folding plate (7) is provided with a groove (3); when the basement is a single layer, grouting and trowelling are carried out on the groove (3) at the upper end of the folding plate (7); when the basement is multi-layer, the lower ends of the upper folded plates (7) are connected in a sealing way through asphalt ointment (6) in the grooves (3) at the upper ends of the lower folded plates (7).

8. The basement exterior wall post-cast strip construction method according to claim 6 or 7, wherein: holes (4) are formed in the upper end of the base reverse ridge (2) and the upper end and the lower end of the folding plate (7), connecting ribs (5) are inserted into the holes (4), and the base reverse ridge (2) and the folding plate (7) are connected and positioned through the connecting ribs (5) between the upper and lower adjacent folding plates (7).

9. The basement exterior wall post-cast strip construction method according to claim 8, wherein the method comprises the following steps: the holes (4) are arranged in the grooves (3) at the upper ends of the base counter-ridge (2) and the folding plate (7) and at the positions of the lower ends of the folding plate (7) corresponding to the grooves (3) of the base counter-ridge (2).