WO2022198848A1

WO2022198848A1 - Construction method of pre-laid waterproof roll lap joint edge of bottom plate and bottom plate side formwork supporting structure

Info

Publication number: WO2022198848A1
Application number: PCT/CN2021/106455
Authority: WO
Inventors: 卓杨; 黄亮; 况彬彬
Original assignee: 江苏凯伦建材股份有限公司
Priority date: 2021-03-24
Filing date: 2021-07-15
Publication date: 2022-09-29
Also published as: CN112922030A

Abstract

The present invention relates to a construction method of a pre-laid waterproof roll lap joint edge of a bottom plate and a bottom plate side formwork supporting structure. A bottom plate side formwork uses a wood formwork. The method comprises construction of a cushion layer; snapping a bottom plate boundary line on the cushion layer; laying a pre-laid waterproof roll in the bottom plate boundary line on the cushion layer and reserving a part of the pre-laid waterproof roll as a lap joint edge, the lap joint edge extending out of the boundary line and being laid on the cushion layer; laying an isolation plate on the lap joint edge to isolate the lap joint edge; building a bottom plate side formwork by using the wood formwork, and reinforcing the wood formwork; and performing subsequent construction. The present invention effectively solves the pollution problem of the lap joint edge of the pre-laid waterproof roll in the construction process; the lap joint edge and a later-stage construction waterproof material can form an excellent closed waterproof layer; moreover, a construction procedure is greatly simplified, and the lap joint edge does not need to be folded, fixed or dismounted whether in the laying stage or in the later-stage lap joint stage.

Description

The construction method of the lap joint edge of the pre-laid waterproofing membrane of the floor and the supporting structure of the side form of the floor

technical field

The invention belongs to the technical field of structural waterproofing, and in particular relates to a construction method for lap joint edges of pre-laid waterproof coiled materials on a floor and a supporting structure for a side form of the floor.

Background technique

Because the underground engineering is deeply buried in the ground, it is always subject to the infiltration of groundwater. If the waterproof problem is not handled properly, the groundwater will leak into the building or inside the building, which will bring a series of problems: affecting the work and life of the people; Accelerates the rate at which buildings are corroded and shortens their service life.

According to the national standard "Technical Specification for Waterproofing of Underground Engineering" GB50108-2008, a fully enclosed and partially enclosed waterproof and drainage design should be adopted for single-built underground projects. Forms a closed waterproof layer. The lap length of the coils should be 150mm for high polymer modified asphalt coils and 100mm for synthetic polymer coils; when two layers of coils are used, the joints of the coils should be staggered and the upper layer of coils Should cover the underlying coil. In the existing underground engineering, the common practice for the overlapping parts of different waterproof materials is to build brick molds or use wooden formwork.

The masonry brick mold usually has the following defects: long construction period and relatively high engineering cost; uneven settlement of the bottom plate and the brick mold, which leads to easy damage to the waterproof lap joint and water leakage.

In the existing construction method for building a wooden formwork, when the wooden formwork is built, the overlapping edge of the pre-laid waterproofing membrane is turned over and fixed on the wooden formwork, and then the bottom plate is constructed. Usually, the reserved lapped parts of the waterproofing membrane are easily contaminated, and cannot overlap with the side wall waterproofing material to form a closed waterproof layer; or the contaminated parts need to be eradicated and cleaned up, which complicates the construction process; especially in the rush period When using temporary wooden formwork, due to the early demoulding, the facade coil fixed on the wooden formwork is easily torn off and polluted by the bottom plate and later construction; The overlapping edge of the waterproofing membrane is susceptible to the pollution of the later construction or the waterproofing membrane is slipped by its own weight, which causes the waterproofing membrane to be polluted by the bottom plate or other construction processes.

SUMMARY OF THE INVENTION

Purpose of the invention: In order to solve the problems existing in the prior art, the present invention provides a pre-laid waterproofing membrane whose lapped edge is free from pollution from the bottom plate or construction, the construction is simple and convenient, and the waterproofing effect is good. construction method.

The invention also provides a support structure for the side mold of the bottom plate.

Technical scheme: in order to solve the above-mentioned technical problems, the present invention adopts the following technical scheme:

A construction method for the lap joint edge of pre-laid waterproof coiled material on the bottom plate, the side formwork of the bottom plate adopts a wooden formwork, and the method includes constructing a cushion layer, bouncing the boundary line of the bottom plate on the cushion layer, and the said cushion layer on the cushion layer. The pre-laid waterproofing membrane is laid within the boundary line of the bottom plate and a part of the pre-laid waterproofing membrane is reserved as a lap joint, and the lap joint extends out of the boundary line of the bottom plate and is laid on the cushion layer. The method also includes the following steps:

S1, laying an isolation plate on the overlapping edge to isolate the overlapping edge;

S2, using the wooden formwork to build the side formwork of the bottom plate along the boundary line of the bottom plate and reinforce the wooden formwork;

S3. Subsequent construction.

In some embodiments of the present invention, the subsequent construction includes:

S30, constructing the bottom plate in the bottom plate side mold built in step S2;

S31, removing the wooden formwork;

S32 , removing the isolation board, and then constructing a waterproof material on the side wall of the bottom plate, so that the waterproof material extends from the side wall of the bottom plate to the overlapping edge.

In some preferred and specific embodiments of the present invention, in step S32, the isolation plate is removed in the process of constructing the waterproof material.

In the present invention, the isolation plate is an isolation plate with a certain hardness, which completely covers the overlapped edge, and isolates the overlapped edge, which has a better isolation effect and can effectively avoid the overlapped edge. If it is damaged by sharp objects on the construction site, it can also effectively avoid the influence of the climatic environment (such as sunlight) on the overlapping edge, thereby affecting the formation of a closed waterproof layer with the side wall waterproof material. In some embodiments of the present invention, the isolation board is a waste wood formwork on a construction site. The use of waste wood formwork as the isolation board not only wastes the use of waste, but also does not increase other additional costs. Preferably, clean waste wood formwork, no sharp protrusions on the laying surface, etc.

In some embodiments of the present invention, the pre-applied waterproof roll material is a polymer self-adhesive film pre-applied waterproof roll material, which includes a polymer sheet layer, a self-adhesive layer and an anti-adhesive layer arranged in sequence. When the polymer sheet layer is the lower surface, the release layer is the upper surface. Preferably, the anti-sticking layer is an anti-sticking particle layer, and before applying the waterproof material on the overlapping edge, the surface floating sand on the anti-sticking layer is removed first.

In some preferred and specific embodiments, after removing the isolation plate, optionally, a transition material is firstly coated on the upper surface of the overlapping edge to form a transition layer, and then a waterproof material is applied on the transition layer. In order to form an excellent closed waterproof layer between the waterproof material and the overlapping edge. When a transition layer is constructed on the overlapping edge, the waterproof material covers the transition layer; when the transition layer is not constructed on the overlapping edge, the waterproof material directly covers the overlapping on the edge.

In some embodiments, the transition material is selected to construct or not construct the transition material according to the specific type of waterproof material selected for the sidewall of the floor, so that an excellent closed waterproof layer is formed between the waterproof material and the overlapping edge. For example, when a waterproof coating is selected for the waterproof material, the transition material for construction can be an adhesive that can be combined with the waterproof coating, such as water-based epoxy resin; when the waterproof material is a waterproof membrane, it can be selected Then the transition material is applied or not. When the transition material is not applied, the waterproof material is directly applied and extended to cover the overlapping edge.

In some embodiments of the present invention, in step S2, when building the bottom plate side formwork, the isolation board is pressed under the wooden formwork, and the inner side of the wooden formwork is beyond the proximity of the isolation board. The end faces of the ends of the wood formwork may be flush with the end faces.

In some embodiments of the present invention, in step S2, square wood and steel pipes are used to reinforce the wood formwork.

In some embodiments of the present invention, the method includes the steps of:

(1) Pouring the cushion concrete;

(2) after the concrete of the cushion layer is dried to form the cushion layer, the boundary line of the bottom plate is bounced on the cushion layer;

(3) Lay a pre-laid waterproof membrane within the boundary line of the bottom plate on the cushion layer and extend it to the outside of the boundary line of the bottom plate, so that the width of the extended part is greater than or equal to 150mm, and the extended part is used as the lap edge;

(4) laying an isolation plate on the overlapping edge to isolate the overlapping edge;

(5) using a wooden formwork to build a bottom plate side form along the bottom plate boundary line and press the isolation plate under the wooden formwork, and reinforce the wooden formwork;

(6) constructing the bottom plate in the bottom plate side mold set up in step (5);

(7) when the base plate reaches the formwork removal strength, remove the wooden formwork;

(8) Remove the insulation board, construct waterproof material on the side walls of the bottom plate and extend the waterproof material to cover the overlapping edge.

Yet another technical solution adopted by the present invention: a support structure for the bottom plate side formwork, the bottom plate side formwork adopts a wooden formwork, the support structure includes a cushion layer, and a bottom plate boundary line is bounced on the cushion layer. A pre-laid waterproofing membrane is laid in the boundary line of the bottom plate and a part of the pre-laid waterproofing membrane is reserved as a lap edge, and the lap edge extends out of the boundary line of the bottom plate and is laid on the cushion layer, The support structure further includes an isolation board laid on the overlapping edge, a wooden formwork built along the boundary line of the bottom plate and pressed on the isolation board, and a bracket for reinforcing the wooden formwork.

In some embodiments of the present invention, the bracket includes a plurality of wooden supports arranged laterally on the side of the wooden formwork, a plurality of wooden supports vertically arranged on the side of the wooden support and used for supporting the wooden support The longitudinal support and the inclined support are arranged outside the longitudinal support and are used to support the longitudinal support. One end of the inclined support is connected with the longitudinal support, and the other end is pressed against the cushion or the ground. The longitudinal support, the inclined support and the wooden support reinforce the wooden formwork.

In some preferred and specific embodiments, the longitudinal struts and the inclined struts are steel pipes respectively. The wooden support is square wood.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art:

The construction method of the invention effectively solves the pollution problem of the overlapped edges of the pre-laid waterproofing membrane during the construction process, so that the overlapped edges are protected from the pollution of the bottom plate and the pollution of the later construction, and the overlapped edges and the waterproof materials of the later construction can be It forms an excellent closed waterproof layer, and also greatly simplifies the construction process. When laying the pre-laid waterproofing membrane, it is not necessary to turn over the overlapping edge of the pre-laid waterproofing membrane and fix it on the wooden formwork. Detach the lap edge from the wooden formwork and clean up the pollution source on the lap edge, and it is not necessary to turn the lap edge over to overlap with the side wall waterproof material when it is later overlapped with the waterproof material.

The construction method of the invention solves the problems that the lap joint edge of the pre-laid waterproofing membrane fixed on the wooden formwork is easily torn off and is polluted by the bottom plate and later construction pollution due to the early demolding during the construction period. At the same time, by adopting the construction method of the present invention, the wooden formwork of the side wall of the bottom plate can be removed when the concrete of the bottom plate reaches the formwork removal strength, and at the same time, the pollution problem of the overlapping edge of the waterproofing membrane of the bottom plate can be avoided, and it is especially suitable for the temporary wooden formwork used in the construction period. Happening.

The construction method of the invention solves the problem that if the side wall waterproof material is not constructed for a long time, the overlapped edge of the floor waterproofing membrane is easily polluted by the later construction or the waterproofing membrane is slipped by its own weight, which causes the waterproofing membrane to be polluted by the floor and other construction processes. pollution problem.

The construction method of the present invention solves the problem that the overlapping edge of the pre-laid waterproofing membrane cannot form a closed waterproof layer with the waterproofing material of the side wall of the bottom plate due to the influence of the environmental climate.

The construction method of the invention effectively solves the problems of water leakage due to damage to the waterproof lap joint caused by uneven settlement due to the use of brick tire molds; and the problems of long construction period and high cost.

Description of drawings

1 is a schematic diagram of a bottom plate side mold support structure with an overhang structure bottom plate built in Example 1;

2 is a schematic diagram of a waterproof structure with an overhang structure bottom plate obtained in Example 1;

3 is a schematic diagram of a bottom plate side mold support structure without an overhang structure bottom plate built in Example 2;

FIG. 4 is a schematic diagram of the waterproof structure of the bottom plate without an overhang structure obtained in Example 2. FIG.

In the figure, 1, cushion; 2, bottom plate; 3, pre-laid waterproof membrane; 3a, lap joint; 4, wooden formwork; 5, isolation board; 6, transition layer; 7, waterproof coating; 8, wood Support; 9. Longitudinal support; 10. Inclined support.

Detailed ways

The technical solutions of the present invention are described in detail below in conjunction with the accompanying drawings and specific embodiments of the description, so that those skilled in the art can better understand and implement the technical solutions of the present invention, but the invention is not limited to the scope of the examples.

Example 1

This embodiment provides a construction method for the overlapping edge of the pre-laid waterproofing membrane on the bottom plate with the overhang structure. When laying the adhesive layer and the anti-adhesive particle layer, the polymer sheet layer is the lower surface, and the anti-adhesive particle layer is the upper surface. The specific construction method includes the following steps:

S1, pour the cushion concrete;

S2. After the concrete of the cushion layer is dried to form the cushion layer 1, the boundary line of the bottom plate is stretched on the cushion layer 1;

S3. Lay a 1.2mm thick polymer self-adhesive film pre-laid waterproofing membrane 3 in the boundary line of the bottom plate on the cushion layer 1 and extend beyond the boundary line of the bottom plate so that the width of the extended part is not less than 150mm. The part is used as the lap edge 3a of the pre-laid waterproofing membrane 3;

S4, laying an isolation plate 5 on the overlapping edge 3a to isolate the overlapping edge 3a;

S5, use the wooden formwork 4 to build the side formwork of the bottom plate along the boundary line of the bottom plate and press the isolation plate 5 under the wooden formwork 4, so as to make the inner side of the wooden formwork 4 and the end face of the isolation plate 5 close to the end of the wooden formwork 4 as much as possible The wooden formwork 4 is reinforced with brackets. As shown in Figure 1, the built-up base plate side formwork support structure includes a cushion layer 1, the cushion layer 1 has a bottom plate boundary line, and the bottom plate boundary line on the cushion layer 1 is laid The pre-laid waterproofing membrane 3 and a part of the pre-spreading waterproofing membrane are reserved as the lap edge 3a, and the lap edge 3a extends beyond the boundary line of the bottom plate and is laid on the cushion layer 1, and the support mechanism also includes laying on the lap edge 3a. The isolation board 5, the wooden formwork 4 built along the boundary line of the bottom plate and pressed on the isolation board 5 and the bracket for reinforcing the wooden formwork 4, the bracket includes a plurality of wooden braces arranged laterally on the outer side of the wooden formwork 4 8, a plurality of longitudinal struts 9 vertically arranged on the outer side of the wooden strut 8 and used to support the wooden strut 8, and an inclined strut 10 arranged obliquely outside the longitudinal strut 9 and used to support the longitudinal strut 9 One end of the inclined support 10 is connected with the longitudinal support 9, and the other end is pressed against the cushion 1 or the ground, and the wooden formwork 4 is reinforced by the longitudinal support 9, the inclined support 10 and the wooden support 8.

S6, binding the reinforcing bars of the bottom plate in the bottom plate side mold built in step S5, and pouring the bottom plate concrete;

S7. When the bottom plate reaches the formwork removal strength, remove the wooden formwork 4;

S8. When the waterproof coating of the side wall of the base plate 2 needs to be constructed, the isolation plate 5 is removed, the surface floating sand on the anti-stick particle layer is removed by wire brushing, and then a water-based ring is constructed on the anti-stick particle layer of the overlapping edge 3a. Oxygen resin forms a transition layer. When the water-based epoxy resin is cured to the point that it is not sticky to the touch, MPU polyurethane waterproof coating is applied on the side wall of the bottom plate and the waterproof coating is brushed to extend to the transition layer 6 and completely cover the transition layer 6 .

The waterproof structure of the bottom plate constructed by the above-mentioned construction method is shown in FIG. 2 , including a cushion layer 1 and a pre-laid waterproofing membrane 3 arranged on the cushion layer 1, and a portion is reserved on the side of the pre-laid waterproofing membrane 3 The pre-laid waterproofing membrane 3 is used as the overlapping edge 3a, and the overlapping edge 3a is laid on the cushion layer 1. The bottom plate waterproof structure also includes a bottom plate 2 arranged on the pre-laid waterproof membrane 3 and a side wall arranged on the bottom plate 2. And the side wall of the bottom plate 2 extends to the waterproof coating 7 formed by curing the waterproof coating on the overlapping edge 3a, and a transition layer 6 is also arranged between the waterproof coating 7 and the overlapping edge 3a.

Example 2

This embodiment provides a construction method for the lap joint edge of pre-laid waterproof coiled material on the base plate without overhanging structure. The construction of the bottom plate is carried out in the same way, as shown in Figure 3, and the obtained waterproof structure of the bottom plate is shown in Figure 4.

The above-mentioned embodiments are only intended to illustrate the technical concept and characteristics of the present invention, and the purpose thereof is to enable those who are familiar with the art to understand the content of the present invention and implement them accordingly, and cannot limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included within the protection scope of the present invention.

Claims

The construction method of the lap joint edge of the pre-laid waterproofing membrane of the bottom plate, the side formwork of the bottom plate adopts a wooden formwork, and it is characterized in that, the method comprises the following steps:

(1) Pouring the cushion concrete;

(2) after the concrete of the cushion layer is dried to form the cushion layer, the boundary line of the bottom plate is bounced on the cushion layer;

(3) Lay the pre-laid waterproof membrane within the boundary line of the bottom plate and extend it to the outside of the boundary line of the bottom plate so that the width of the extended part is greater than or equal to 150mm, and the extended part is used as a lap edge, wherein the The pre-laid waterproof membrane is a polymer self-adhesive film pre-laid waterproof membrane, which includes a polymer sheet layer, an adhesive layer and an anti-stick layer arranged in sequence. When laying, the polymer sheet layer is the lower surface. , the anti-stick layer is the upper surface;

(4) laying an isolation board on the overlapped edge to isolate the overlapped edge, wherein the isolation board is a waste wood formwork on a construction site;

(5) using the wooden formwork to build the side formwork of the bottom plate along the boundary line of the bottom plate and press the isolation plate under the wooden formwork, and reinforce the wooden formwork;

(6) constructing the bottom plate in the bottom plate side mold set up in step (5);

(7) when the base plate reaches the formwork removal strength, remove the wooden formwork;

(8) Remove the insulation board, construct waterproof material on the side walls of the bottom plate and extend the waterproof material to cover the overlapping edge.
A construction method for the lap joint edge of pre-laid waterproof coiled material on the bottom plate, the side formwork of the bottom plate adopts a wooden formwork, and the method includes constructing a cushion layer, bouncing the boundary line of the bottom plate on the cushion layer, and the said cushion layer on the cushion layer. The pre-laid waterproofing membrane is laid within the boundary line of the bottom plate and a part of the pre-laid waterproofing membrane is reserved as a lap edge. It is characterized in that the lap edge extends beyond the boundary line of the bottom plate and is laid on the cushion layer Above, the method also includes the following steps:

S1, laying an isolation plate on the overlapping edge to isolate the overlapping edge;

S2, using the wooden formwork to build the side formwork of the bottom plate along the boundary line of the bottom plate and reinforce the wooden formwork;

S3. Subsequent construction procedures.
The construction method for the lap joint edge of the base plate pre-laid waterproofing membrane according to claim 2, is characterized in that, described subsequent construction procedure comprises:

S30, constructing the bottom plate in the bottom plate side mold built in step S2;

S31, removing the wooden formwork;

S32, removing the isolation board, and then constructing a waterproof material on the side wall of the bottom plate, so that the waterproof material extends from the side wall of the bottom plate to the overlapping edge.
The construction method for the lap joint edge of the base plate pre-laid waterproofing membrane according to claim 3, characterized in that: in step S32, the isolation plate is removed in the process stage of constructing the waterproof material.
The construction method for the lap joint edge of the bottom plate pre-laid waterproofing membrane according to claim 2, wherein the pre-laid waterproofing membrane is a polymer self-adhesive film pre-spreading waterproofing membrane, which comprises sequentially arranged high When laying the molecular sheet layer, the adhesive layer and the release layer, the polymer sheet layer is the lower surface, and the release layer is the upper surface.
The construction method of the lap joint edge of the bottom plate pre-laid waterproofing membrane according to claim 5, characterized in that: after removing the isolation board, optionally firstly coating the upper surface of the lap joint edge with a transition material to form transition layer, and then construct waterproof material on the transition layer.
The construction method for the lap joint edge of the base plate pre-laid waterproofing membrane according to claim 5, wherein the anti-stick layer is an anti-stick particle layer, and before the waterproof material is constructed on the lap joint edge, a Remove surface sand from the release layer.
The construction method for the lap joint edge of the base plate pre-laid waterproofing membrane according to claim 2, wherein the isolation board is a waste wood formwork on a construction site.
The construction method for the lap joint edge of the base plate pre-laid waterproofing membrane according to claim 2, characterized in that: in step S2, when the base plate side formwork is built, the isolation plate is pressed under the wooden formwork, and The inner side of the wood formwork is made to protrude beyond the end face of the insulation board near the end of the wood formwork or to be flush with the end face.
The construction method for the lap joint edge of the pre-laid waterproof coiled material on the bottom plate according to claim 2, characterized in that: in step S2, square wood and steel pipe are used to reinforce the wood formwork.
According to the construction method of the lap joint edge of the base plate pre-laid waterproofing membrane according to any one of claims 2 to 10, it is characterized in that, the method comprises the following steps:

(1) Pouring the cushion concrete;

(2) after the concrete of the cushion layer is dried to form the cushion layer, the boundary line of the bottom plate is bounced on the cushion layer;

(3) Lay a pre-laid waterproof membrane within the boundary line of the bottom plate on the cushion layer and extend it to the outside of the boundary line of the bottom plate, so that the width of the extended part is greater than or equal to 150mm, and the extended part is used as the lap edge;

(4) laying an isolation plate on the overlapping edge to isolate the overlapping edge;

(5) using a wooden formwork to build a bottom plate side form along the bottom plate boundary line and press the isolation plate under the wooden formwork, and reinforce the wooden formwork;

(6) constructing the bottom plate in the bottom plate side mold set up in step (5);

(7) when the base plate reaches the formwork removal strength, remove the wooden formwork;

(8) Remove the insulation board, construct waterproof material on the side walls of the bottom plate and extend the waterproof material to cover the overlapping edge.
A base plate side formwork support structure, the base plate side formwork adopts a wooden formwork, the support structure comprises a cushion layer, a base plate boundary line is bounced on the cushion layer, and a pre-laid waterproof layer is laid in the base plate boundary line on the cushion layer. Coiled material and reserved a part of the pre-laid waterproofing material as the overlapping edge, characterized in that: the overlapping edge extends beyond the boundary line of the bottom plate and is laid on the cushion layer, and the support structure further includes An isolation board laid on the overlapping edge, a wooden formwork built along the boundary line of the bottom plate and pressed on the isolation board, and a bracket for reinforcing the wooden formwork.
The support structure for the side formwork of the bottom plate according to claim 12, wherein the bracket comprises a plurality of wooden supports arranged laterally on the sides of the wooden formwork, vertically arranged on the sides of the wooden supports and used for supporting A plurality of longitudinal struts of the wooden strut and an oblique strut that is inclined outside the longitudinal strut and used to support the longitudinal strut, one end of the oblique strut is connected to the longitudinal strut, and the other end abuts against the longitudinal strut. On the cushion layer or the ground, the wooden formwork is reinforced by the longitudinal struts, the inclined struts and the wooden struts.
The bottom plate side formwork support structure according to claim 13, wherein the longitudinal support and the inclined support are steel pipes respectively, and/or the wooden support is square wood.