CN109183844B - Construction method for pre-paving and reversely-adhering TPO (thermoplastic polyolefin) waterproof coiled material on pipe gallery bottom plate - Google Patents
Construction method for pre-paving and reversely-adhering TPO (thermoplastic polyolefin) waterproof coiled material on pipe gallery bottom plate Download PDFInfo
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- CN109183844B CN109183844B CN201811286346.7A CN201811286346A CN109183844B CN 109183844 B CN109183844 B CN 109183844B CN 201811286346 A CN201811286346 A CN 201811286346A CN 109183844 B CN109183844 B CN 109183844B
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- coiled material
- pipe gallery
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
Abstract
The invention provides a construction method for pre-paving anti-adhesion TPO (thermoplastic polyolefin) waterproof rolls on a pipe gallery bottom plate, which comprises the following steps: pouring a cushion layer of the bottom plate of the pipe gallery; laying an additional layer and pre-laying a reverse adhesion type TPO waterproof coiled material, and reserving the coiled material; constructing a waterproof coiled material protective layer, and temporarily protecting the reserved coiled material; binding the steel bars of the bottom plate of the pipe gallery and installing a galvanized water stop steel plate; turning up the reserved waterproof coiled material, and temporarily fixing the reserved waterproof coiled material on nearby reinforcing steel bars; erecting a floor side wall template; tightly nailing the upturned waterproof coiled material on the inner side of the template; mounting a water stop bolt and fixing a template; pouring bottom plate concrete for molding; continuing to construct the side wall and top plate structure of the pipe gallery; laying self-adhesive TPO waterproof rolls on the side walls and the top plate of the pipe gallery; the self-adhesive TPO waterproof coiled material is connected with the pre-paved anti-adhesive TPO waterproof coiled material through hot air welding, so that the forming quality and the construction efficiency of the pre-paved anti-adhesive TPO waterproof coiled material at the bottom plate of the pipe gallery are improved, and the construction process is simplified.
Description
Technical Field
The invention belongs to the technical field of construction of waterproof rolls at a bottom plate of a comprehensive pipe gallery, and particularly relates to a construction method for pre-paving anti-sticking TPO waterproof rolls on the bottom plate of the pipe gallery.
Background
When carrying out utility tunnel floor construction, must make the waterproof construction of bottom plate department earlier, and the waterproofing membrane material that bottom plate department adopted usually is for paving in advance anti-gluing type TPO waterproofing membrane, and the one side of this kind of waterproofing membrane and bottom plate concrete contact is the frosting, and is used for the later stage to carry out the lapped one side with self-adhesion type TPO waterproofing membrane and is the smooth surface.
When carrying out the construction of the anti-type TPO waterproofing membrane that glues of pre-laying of utility tunnel bottom plate department, one way is after having executed the bed course according to the design drawing earlier and leading the wall, lay the waterproofing membrane additional layer of the anti-type TPO waterproofing membrane that glues of pre-laying and corner on the bed course, and fix the coiled material tip at leading the wall top with the nail, after having executed the coiled material protective layer, the ligature reinforcing bar, installation zinc-plated stagnant water steel sheet, set up the template, the reuse is fixed the template to drawing stagnant water bolt, pour the bottom plate concrete at last. This kind of way can hug closely the type TPO waterproofing membrane of sticking conversely in advance on piping lane bottom plate side wall, nevertheless makes the coiled material broke the hole when the installation is to the stay bolt, and the unable repair of later stage is handled, can produce scurries water, leaks the hidden danger. In addition, the construction cost of the guide wall is high, and the construction period is prolonged due to the fact that the construction process of the guide wall is increased.
And another way is after having done the bed course, lay the waterproofing membrane additional layer of the anti-type TPO waterproofing membrane of the shop in advance and the corner on the bed course, and reserve certain coiled material at the corridor periphery, and protect this part of coiled material temporarily, after the construction of coiled material protective layer is accomplished, the ligature reinforcing bar, the installation galvanized sealing-up steel sheet, and set up the template inside and outside the pipe gallery bottom plate department side wall, it is fixed with the template with the tie water bolt again, then pour the bottom plate concrete, remove the mould after waiting to reach design intensity, after waiting to accomplish at last that pipe gallery side wall and roof construction are accomplished, upwards turn up the coiled material of reserving, make it paste on the bottom plate side wall. Although the integrity of the coiled material is guaranteed, the coiled material cannot be attached to the side wall of the pipe gallery better due to the frosted surface.
Therefore, in order to solve the problem that the pre-paved and reversely-bonded TPO waterproof coiled material with the frosted surface is not attached to the side wall of the bottom plate of the pipe gallery, the invention provides a new method which is more effective and can obviously improve the construction efficiency and the construction quality of the waterproof coiled material at the bottom plate of the comprehensive pipe gallery.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a construction method for pre-paving and reversely adhering type TPO waterproof coiled materials on a pipe gallery bottom plate, so that the forming quality and the construction efficiency of the pre-paving and reversely adhering type TPO waterproof coiled materials on the pipe gallery bottom plate are improved, the construction process is simplified, and the waterproof capacity of a pipe gallery is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the construction method for pre-paving anti-adhesion TPO waterproof coiled material on the bottom plate of the pipe gallery is characterized by comprising the following steps:
s1) pouring a pipe gallery bottom plate cushion layer after the groove inspection at the bottom of the pipe gallery foundation pit is qualified;
s2) laying an additional layer and a pre-laid reverse-adhesion type TPO waterproof coiled material, wherein the width of the pre-laid reverse-adhesion type TPO waterproof coiled material exceeds the outer edge of the side wall of the pipe gallery, a protective layer of the pre-laid reverse-adhesion type TPO waterproof coiled material is made of fine aggregate concrete, and the reserved pre-laid reverse-adhesion type TPO waterproof coiled material is temporarily protected;
s3) binding the steel bars of the bottom plate of the pipe gallery and installing a galvanized water-stop steel plate, turning up the reserved pre-laid anti-sticking TPO waterproof roll, and temporarily binding the roll on the nearby steel bars;
s4) erecting a bottom plate side wall template according to design requirements, removing temporary binding of the upturned waterproof coiled materials, tightly nailing the upturned waterproof coiled materials on the bottom plate side wall template, and fixing the bottom plate side wall template through a water stop bolt;
s5) pouring bottom plate concrete for forming, and after the bottom plate side wall template is disassembled, ensuring that the pre-paved reverse adhesion type TPO waterproof coiled material is tightly attached to the pipe gallery;
s6) after the construction of the side wall and the top plate of the pipe gallery is finished, laying self-adhesive TPO waterproof rolls on the side wall and the top plate of the pipe gallery, and performing hot air welding connection on the self-adhesive TPO waterproof rolls through pre-laid anti-adhesive TPO waterproof rolls tightly attached to the gallery body concrete;
s7) applying a protective layer of the waterproof coiled material of the side wall and the top plate of the pipe gallery.
According to the scheme, the pipe gallery bottom plate cushion layer is made of C20 plain concrete and is 100mm thick.
According to the scheme, the top edge of the upturned waterproof roll is located below the water stop bolt.
According to the scheme, the tightly nailing of the upturned waterproof coiled material on the template comprises the following contents: firstly, a thin wood strip is padded at a nail fastening position of a pre-laid anti-sticking TPO waterproof coiled material, then the thin wood strip and the pre-laid anti-sticking TPO waterproof coiled material are nailed together by a nail to be dead on a template, and finally, a gap between the thin wood strip and the template is plugged by an adhesive tape.
According to above-mentioned scheme, paint PMC polymer modified cement base waterproof mortar in proper order, lay self-adhesion type TPO waterproofing membrane, paint cement waterproof mortar, lay the extruded sheet on piping lane side wall and the roof from inside to outside, self-adhesion type TPO waterproofing membrane and the anti-type TPO waterproofing membrane self-adhesion overlap joint that glues of shop in advance, the junction outside is consolidated through hot-blast welding homogeneous type TPO waterproofing membrane additional layer, and the junction position is less than the construction joint.
According to above-mentioned scheme, piping lane side wall and roof waterproofing membrane's protective layer is the brick wall protective layer, highly surpassing of brick wall protective layer self-adhesion type TPO waterproofing membrane is with the anti-type TPO waterproofing membrane self-adhesion overlap joint department that glues of shop in advance, with the setting is hugged closely to the extruded sheet.
The invention has the beneficial effects that: (1) the construction method for the pre-paved and anti-sticking TPO waterproof coiled material of the pipe gallery bottom plate can enable the pre-paved and anti-sticking TPO waterproof coiled material with the frosted surface to be tightly attached to the side wall of the pipe gallery when the pre-paved and anti-sticking TPO waterproof coiled material turns upwards, greatly improves the construction quality of the waterproof coiled material at the pipe gallery bottom plate, ensures the waterproof effect at the position of the pipe gallery in the later period, shortens the construction period and reduces the risk of reworking in the later period;
(2) only 650mm width is reserved when the pre-laid reverse-bonding TPO waterproof coiled material is laid, so that the reserved coiled material cannot coincide with the position where the water-stopping bolt needs to be installed when the reserved coiled material turns upwards in the later period, the integrity of the coiled material is ensured, the waterproof effect of the coiled material is better, and the coiled material at the position of the water-stopping bolt hole does not need to be additionally processed in the later period;
(3) the distance between the hot air welding position and the construction joint position of the self-adhesive TPO waterproof coiled material and the pre-paved anti-adhesive TPO waterproof coiled material is increased, and the path that water possibly flows into the interior of the gallery body is increased, so that the waterproof capacity of the pipe gallery is improved;
(4) the method has simple process, basically does not increase the construction cost, and has high construction efficiency.
Drawings
Fig. 1 is a schematic view of a bottom mat of a pouring gallery according to an embodiment of the present invention.
Fig. 2 is a schematic view of the installation of a pipe gallery floor steel bar binding and galvanized water stop steel plate according to an embodiment of the invention.
FIG. 3 is a schematic view of the temporary binding of the upturned roll of waterproofing material according to one embodiment of the present invention.
Fig. 4 is a schematic view of the pre-laid reverse-adhesion type TPO waterproof roll tightly nailed inside the formwork according to one embodiment of the present invention.
Fig. 5 is a view taken along direction a of fig. 4.
FIG. 6 is a schematic view of hot air welding according to one embodiment of the present invention.
Fig. 7 is a view from direction B of fig. 6.
Fig. 8 is a schematic view of a protective layer of a waterproof roll at the side wall of the utility tunnel according to an embodiment of the invention.
FIG. 9 is a flow chart of one embodiment of the present invention.
Detailed Description
For a better understanding of the present invention, reference is made to the following description taken in conjunction with the accompanying drawings and examples.
As shown in fig. 9, a construction method for pre-paving a pipe gallery bottom plate with an anti-adhesion TPO waterproof roll comprises the following specific steps:
(1) after the groove inspection at the bottom of the pipe gallery foundation pit is qualified, pouring a pipe gallery bottom plate cushion layer 1, wherein the cushion layer is made of C20 plain concrete and has the thickness of 100 mm;
(2) laying an additional layer 2 and a pre-laid reverse-adhesion type TPO waterproof coiled material 3 with the thickness of 1.6mm, wherein the width of the pre-laid reverse-adhesion type TPO waterproof coiled material is 650mm more than that of the outermost edge of the side wall of the pipe gallery, and the highest position of the coiled material after being turned up is below a water stop bolt; the additional layer is a self-adhesive TPO waterproof coiled material 2 with the thickness of 1.5mm, and can be firmly attached to the smooth surface of the pre-paved anti-adhesive TPO waterproof coiled material;
(3) adopting 50mm thick fine stone concrete, constructing a waterproof roll protective layer 4, and temporarily protecting a reserved 650mm wide roll (see figure 1);
(4) binding the reinforcement 5 of the bottom plate of the pipe gallery and installing a galvanized water-stop steel plate 6 (see figure 2);
(5) turning up the reserved 650mm wide waterproof roll and temporarily binding the roll on nearby steel bars (see fig. 3);
(6) erecting a bottom plate side wall template 7 according to design requirements;
(7) tightly nailing an upturned waterproof coiled material on the inner side of a template, in the process, firstly padding a thin narrow batten 8 on the edge of the coiled material, then nailing the batten and the coiled material together by using nails 17 to be fixed on the template, and finally plugging a gap between the batten and the template by using an adhesive tape 9, so that concrete can be effectively prevented from flowing into the gap between the template and the coiled material when bottom plate concrete is poured, and the template is fixed by using a water stop bolt 10 (see fig. 4 and 5);
(8) pouring bottom plate concrete for molding, and after a bottom plate template is disassembled, ensuring that the pre-paved reverse adhesion type TPO waterproof coiled material is tightly attached to the pipe gallery;
(9) continuing construction, after the construction of the side wall and the top plate of the pipe gallery is finished, laying self-adhesive TPO waterproof rolls 18 on the side wall and the top plate of the pipe gallery, wherein the self-adhesive TPO waterproof rolls are connected by hot air welding through pre-laid anti-adhesive TPO waterproof rolls tightly attached to the concrete of the gallery body (see fig. 6 and 7);
(10) and finally, applying a protective layer of the waterproof coiled material for the side wall and the top plate of the pipe gallery (see figure 8).
Scribble PMC polymer modified cement base waterproof mortar 11, lay self-adhesion type TPO waterproofing membrane 18, paint cement waterproof mortar 12, lay extruded sheet 13 on the piping lane side wall 19 from inside to outside in proper order, self-adhesion type TPO waterproofing membrane is with the anti-type TPO waterproofing membrane self-adhesion overlap joint that glues of pre-paving, and the junction outside is consolidated through hot-blast welding homogeneous type TPO waterproofing membrane additional layer 14, and the junction position is less than construction joint 15.
Piping lane side wall and roof waterproofing membrane's protective layer is brick wall protective layer 16, and the height of brick wall protective layer exceeds self-adhesion type TPO waterproofing membrane and spreads anti-adhesion type TPO waterproofing membrane self-adhesion overlap joint department in advance, hugs closely the setting with the extruded sheet.
Claims (3)
1. The construction method for pre-paving anti-adhesion TPO waterproof coiled material on the bottom plate of the pipe gallery is characterized by comprising the following steps:
s1) pouring a pipe gallery bottom plate cushion layer after the groove inspection at the bottom of the pipe gallery foundation pit is qualified;
s2) laying an additional layer and a pre-laid reverse-adhesion type TPO waterproof coiled material, wherein the width of the pre-laid reverse-adhesion type TPO waterproof coiled material exceeds the outer edge of the side wall of the pipe gallery, a protective layer of the pre-laid reverse-adhesion type TPO waterproof coiled material is made of fine aggregate concrete, and the reserved pre-laid reverse-adhesion type TPO waterproof coiled material is temporarily protected;
s3) binding the steel bars of the bottom plate of the pipe gallery and installing a galvanized water-stop steel plate, turning up the reserved pre-laid anti-sticking TPO waterproof roll, and temporarily binding the roll on the nearby steel bars;
s4) erecting a bottom plate side wall template according to design requirements, removing temporary binding of the upturned waterproof coiled materials, tightly nailing the upturned waterproof coiled materials on the bottom plate side wall template, fixing the bottom plate side wall template through a water stop bolt, and enabling the top edge of the upturned waterproof coiled materials to be located below the water stop bolt;
s5) pouring bottom plate concrete for forming, and after the bottom plate side wall template is disassembled, ensuring that the pre-paved reverse adhesion type TPO waterproof coiled material is tightly attached to the pipe gallery;
s6) after the construction of the side wall and the top plate of the pipe gallery is completed, sequentially smearing PMC polymer modified cement-based waterproof mortar, laying self-adhesive TPO waterproof rolls, smearing cement waterproof mortar and laying extruded sheets on the side wall and the top plate of the pipe gallery from inside to outside, wherein the self-adhesive TPO waterproof rolls are in self-adhesive lap joint with pre-laid anti-adhesive TPO waterproof rolls, the outer side of a joint is reinforced by welding an additional layer of uniform TPO waterproof rolls through hot air, and the position of the joint is lower than a construction joint;
s7), executes the protective layer of doing piping lane side wall and roof waterproofing membrane, the protective layer is the brick wall protective layer, highly surpassing of brick wall protective layer self-adhesion type TPO waterproofing membrane and the anti-bonding type TPO waterproofing membrane self-adhesion overlap joint department of paving in advance, with the setting is hugged closely to the extruded sheet.
2. The construction method of the pipe gallery floor pre-paved and inversely adhered TPO waterproof roll according to claim 1, wherein the pipe gallery floor cushion layer is made of C20 plain concrete and has a thickness of 100 mm.
3. The construction method of pre-paved and inversely adhered TPO waterproof roll of pipe gallery bottom plate according to claim 1, wherein the tightly nailing of the upturned waterproof roll on the formwork comprises the following steps: firstly, a thin wood strip is padded at a nail fastening position of a pre-laid anti-sticking TPO waterproof coiled material, then the thin wood strip and the pre-laid anti-sticking TPO waterproof coiled material are nailed together by a nail to be dead on a template, and finally, a gap between the thin wood strip and the template is plugged by an adhesive tape.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811286346.7A CN109183844B (en) | 2018-10-31 | 2018-10-31 | Construction method for pre-paving and reversely-adhering TPO (thermoplastic polyolefin) waterproof coiled material on pipe gallery bottom plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811286346.7A CN109183844B (en) | 2018-10-31 | 2018-10-31 | Construction method for pre-paving and reversely-adhering TPO (thermoplastic polyolefin) waterproof coiled material on pipe gallery bottom plate |
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| CN109183844A CN109183844A (en) | 2019-01-11 |
| CN109183844B true CN109183844B (en) | 2021-01-19 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331740B (en) * | 2019-06-05 | 2021-03-23 | 中建八局第三建设有限公司 | Waterproof construction method for underground engineering |
| CN110629801B (en) * | 2019-07-26 | 2021-05-18 | 中国一冶集团有限公司 | Construction method using vertical mold as base surface of pre-paved anti-sticking self-adhesive waterproof roll |
| CN112343094A (en) * | 2020-10-17 | 2021-02-09 | 中建一局集团第一建筑有限公司 | Construction method for pre-paving and reverse-adhering waterproof coiled material |
| CN114809075A (en) * | 2022-04-29 | 2022-07-29 | 中国铁建港航局集团有限公司 | Comprehensive waterproof construction method for underground prefabricated pipe gallery |
| CN115233743B (en) * | 2022-09-02 | 2023-09-22 | 中建八局发展建设有限公司 | Construction method of brick-free tire membrane bottom plate waterproof coiled material |
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