CN110778029B

CN110778029B - Roof waterproof structure

Info

Publication number: CN110778029B
Application number: CN201911026771.7A
Authority: CN
Inventors: 金强; 冯国军; 丁祥楼
Original assignee: Nantong Tianan Special Concrete Products Co ltd
Current assignee: Nantong Tianan Special Concrete Products Co ltd
Priority date: 2019-10-26
Filing date: 2019-10-26
Publication date: 2021-03-02
Anticipated expiration: 2039-10-26
Also published as: CN110778029A

Abstract

The invention discloses a roof waterproof structure, which belongs to the technical field of engineering building waterproofing and comprises double T-shaped plates vertically arranged on a cross beam, wherein the tops of two sides of each double T-shaped plate are fixedly provided with a first connecting block and a second connecting block, a splicing seam is formed between the first connecting block and the second connecting block of two adjacent double T-shaped plates, and a polyurethane foaming agent is filled in the splicing seam; waterproof coiled materials are paved on the tops of the first connecting block and the second connecting block which are close to each other on the two adjacent double T plates; the invention also discloses a mounting process of the roof waterproof structure, which comprises the following steps: s1, mounting the double-T plate on the beam; s2, mounting the waterproof coiled material on the tops of the two adjacent double T-shaped plates; s3, mounting the cement ridge tiles above the waterproof coiled materials of the two adjacent double T-shaped plates, and the invention has the effect of facilitating the laying and mounting of the waterproof structure.

Description

Roof waterproof structure

Technical Field

The invention relates to the technical field of engineering building waterproofing, in particular to a roof waterproofing structure and an installation process thereof.

Background

At present, a roof is an outer protection component on the uppermost layer of a building and is used for resisting the influence of adverse factors such as rain, snow, wind, frost, solar radiation, temperature change and the like in the nature and ensuring that a good use environment is formed inside the building. The roof should meet the functional requirements of firmness, durability, water resistance, heat preservation, heat insulation, fire prevention and resistance to various adverse effects.

The integral crack resistance of the fabricated building roof is poor, the roof is easy to generate penetrating cracks, so that the fabricated building roof has special requirements on roof seam water resistance, seams and interfaces are required to have good bonding and sealing properties on waterproof materials, and if an effective waterproof layer is not formed, the fabricated building roof is easy to crack during building settlement.

In the prior art, reference is made to a utility model patent with an authorization publication number of CN207892138U, which discloses an assembled roof seam waterproof structure, wherein the roof seam waterproof structure comprises an assembled roof panel, a roof seam, a roof composite waterproof layer, a sealing structure and a self-adhesive waterproof roll layer; the inevitable gap between every two connecting parts of the assembled roof panels is a roof splicing seam; the roof splicing seam is provided with a sealing structure, and the sealing structure is formed by processing a sealing adhesive; the roof composite waterproof layer is formed by superposing a roof waterproof coating layer and a reinforced roof waterproof coating layer; the roof composite waterproof layer and the self-adhesive waterproof roll material layer are sequentially laminated on the assembled roof panel and the sealing structure.

However, the above utility model has the following disadvantages: since the above waterproof structure is complicated, it is inconvenient to lay and install the waterproof structure.

Disclosure of Invention

One object of the present invention is to provide a roof waterproof structure, which achieves the effect of facilitating the laying and installation of the waterproof structure.

The technical purpose of the invention is realized by the following technical scheme:

a roof waterproof structure comprises a plurality of double T plates vertically arranged on a cross beam, wherein the tops of two sides of each double T plate are fixedly provided with a first connecting block and a second connecting block, a splicing seam is formed between the first connecting block and the second connecting block of two adjacent double T plates, a polyurethane foaming agent is filled in the splicing seam, and the bottoms of the two adjacent first connecting blocks and the second connecting blocks are provided with sealing mechanisms; waterproof coiled materials are paved on the tops of the first connecting block and the second connecting block which are close to each other on the two adjacent double T plates together, and a positioning mechanism used for fixing the waterproof coiled materials and the double T plates is arranged between the waterproof coiled materials and the double T plates; and a cement ridge tile covering the waterproof coiled material is fixedly arranged above the first connecting block and the second connecting block of the adjacent double T-shaped plates.

Through adopting above-mentioned scheme, polyurethane foaming agent has characteristics such as the cohesiveness is good, corrosion-resistant and waterproof nature is good, can prevent to splice the seam internal leakage, and sealing mechanism can prevent that polyurethane foaming agent from flowing out from the concatenation seam, and waterproofing membrane cement ridge tile is semi-circular, and cement ridge tile can prevent that the rainwater from flowing to concatenation seam department with the automatic outside water conservancy diversion of rainwater, and above-mentioned waterproof construction, simple structure lays the convenience, has reached the effect of being convenient for lay and install waterproof construction.

The invention is further configured to: the sealing mechanism comprises a limiting block horizontally and fixedly arranged on one side of the bottom of the double T-shaped plate, a fixed block horizontally and fixedly arranged on the other side of the double T-shaped plate, a notch groove is formed in the fixed block along the length direction of the fixed block, the limiting block can be inserted into the notch groove, and guide surfaces are symmetrically formed in the top and the bottom of the limiting block; the bottom and the top that the fixed block is located the breach groove all set firmly the rubber pad, and the bottom that the fixed block is located the breach groove is provided with the locking Assembly with stopper and fixed block locking.

Through adopting above-mentioned scheme, the spigot surface can be convenient for the stopper peg graft in the breach inslot, pegs graft in breach inslot back as the stopper, and the spigot surface butt of stopper can block up the clearance between stopper and the fixed block on rubber pad, prevents that the polyurethane foaming agent from flowing down from the concatenation seam, and locking Assembly can be with stopper and fixed block locking.

The invention is further configured to: the holding tank has been seted up to the bottom that the fixed block is located the breach groove, and locking Assembly is including setting firmly in the holding tank and along a plurality of springs of evenly arranging of the length direction of holding tank, and the bottom of spring sets firmly in the holding tank bottom of fixed block, and the top has set firmly the sealing strip that the protrusion holding tank set up jointly.

Through adopting above-mentioned scheme, the tension of spring makes the sealing strip support tight stopper, not only can strengthen the leakproofness of stopper and fixed block, can also make stopper and fixed block connect more stably.

The invention is further configured to: and one side of the first connecting block, which is back to the second connecting block, is provided with a first inclined plane and a second inclined plane respectively.

Through adopting above-mentioned scheme, waterproofing membrane lays on inclined plane one and inclined plane two, and inclined plane one and inclined plane two are convenient for waterproofing membrane's laying, compare in vertical cross-section for tetragonal fixed block, and vertical cross-section can reduce the required material of waterproofing membrane for trapezoidal fixed block.

The invention is further configured to: positioning mechanism is including burying the type of falling T bolt on two T boards in advance, and the top cover of the type of falling T bolt is equipped with gasket one, and waterproofing membrane corresponds the position of the type of falling T bolt and has seted up and make waterproofing membrane cover locate the type of falling T bolt through-hole, and the top cover that the type of falling T bolt is located waterproofing membrane is equipped with gasket two, and the top threaded connection of the type of falling T bolt has the nut.

Through adopting above-mentioned scheme, the through-hole makes waterproofing membrane cover locate the type of falling T bolt on, screws up the nut and can support gasket two, waterproofing membrane and gasket one tightly, and gasket one can reduce the wearing and tearing of nut to waterproofing membrane, and gasket two can reduce the wearing and tearing between waterproofing membrane and the two T boards to extension waterproofing membrane's life.

The invention is further configured to: PVC factice is coated between the waterproof coiled material and the first gasket and between the waterproof coiled material and the second gasket.

Through adopting above-mentioned scheme, the PVC oleamen can be fixed between waterproofing membrane and gasket one and gasket two, and increase waterproofing membrane and gasket one and the area of contact between the gasket two, break away from between gasket one and gasket two and the waterproofing membrane in the prevention of installation to reduce waterproofing membrane's wearing and tearing.

The invention is further configured to: the locating slot has been seted up at the edge that the top of two T boards corresponds cement ridge tile, and the edge that cement ridge tile is close to the outside is provided with the locating piece, and the locating piece is pegged graft in the locating slot after, makes to form between cement ridge tile and the two T boards and pours the seam, and the inboard of cement ridge tile and locating slot is provided with the sealed seal assembly with cement ridge tile and two T boards.

Through adopting above-mentioned scheme, cement ridge tile is before fixed, peg graft cement ridge tile in the constant head tank, play the prepositioning effect to cement ridge tile, carry out cement mortar with the junction of cement ridge tile and constant head tank again and pour, cement mortar can enter into the pouring seam in, it is more stable to make to connect between cement ridge tile and the two T boards, seal assembly can be sealed with cement ridge tile and two T boards, prevent that water from stretching into in the cement ridge tile, and then prevent that water from flowing down through the concatenation seam.

The invention is further configured to: the seal assembly is located the constant head tank including seting up in two T boards and is close to the inboard T type groove that slides of cement ridge tile, the vertical sliding of the inslot that slides of T type is connected with a briquetting, the one end of briquetting is located the constant head tank, the other end sets firmly slides and connects in the spacing of T type inslot that slides, the length of spacing is less than the length of T type groove that slides, make spacing can slide and can not break away from the T type groove that slides in T type groove that slides, the bottom that the briquetting is located the constant head tank has set firmly the rubber piece, the inboard at the bottom edge of cement ridge tile has set firmly the roof.

Through adopting above-mentioned scheme, when cement ridge tile is pegged graft in the constant head tank, the cement roof can support tightly in the top of roof, makes briquetting downstream support the rubber block tightly in the bottom of constant head tank, can be sealed cement ridge tile and constant head tank, prevents that the rainwater from entering into the below that two T boards are located cement ridge tile.

The invention aims to provide an installation method of a roof waterproof structure, which achieves the effect of facilitating the laying and installation of the waterproof structure.

The installation process of the roof waterproof structure comprises the following steps:

s1, mounting the double-T plate on the beam: mounting the double T-shaped plates on the cross beam, and forming a splicing seam of 30-80 mm between two adjacent double T-shaped plates; meanwhile, the limiting block is inserted into the notch groove of the fixing block, and the sealing strip is tightly propped against the limiting block by the tension of the spring; then filling a polyurethane foaming agent into the splicing seams;

s2, mounting the waterproof coiled material on the tops of the two adjacent double T-shaped plates: the waterproof coiled material is laid on the tops of the first connecting block and the second connecting block on the side close to the adjacent double T-shaped plates;

s3, mounting the cement ridge tile above the waterproof coiled materials of the two adjacent double T-shaped plates: the bottoms of the two sides of the cement ridge tile are inserted into the positioning grooves, and cement mortar pouring is carried out at the joint of the cement ridge tile and the double T-shaped plate.

By adopting the scheme, the splicing seams formed by the double T plates are filled with the polyurethane foaming agent to prevent rainwater from flowing downwards from the splicing seams, the limiting blocks are inserted into the fixed blocks to prevent the polyurethane foaming agent from flowing out of the splicing seams, the waterproof coiled material is laid on the tops of the first connecting block and the second connecting block, the waterproof coiled material can reduce water from entering the splicing seams, the cement ridge tiles can automatically guide the rainwater outwards to prevent the rainwater from flowing towards the splicing seams, and the effect of conveniently disassembling and assembling the waterproof coiled material, the cement ridge tiles and the like is achieved,

the invention is further configured to: in S2, a first gasket is sleeved on the inverted T-shaped bolt, the inverted T-shaped bolt is sleeved with the waterproof coiled material, the top of the waterproof coiled material is sleeved with the second gasket, the first gasket and the waterproof coiled material are fixed by screwing a nut, and PVC factice is coated between the waterproof coiled material and the first gasket and between the waterproof coiled material and the second gasket.

Through adopting above-mentioned scheme, screwing up the nut and can supporting gasket two, waterproofing membrane and gasket one tightly, gasket one can reduce the nut to waterproofing membrane's wearing and tearing, and gasket two can reduce the wearing and tearing between waterproofing membrane and the two T boards to extension waterproofing membrane's life, the PVC oleamen can be fixed between waterproofing membrane and gasket one and gasket two.

In conclusion, the invention has the following beneficial effects:

1. through the double-T plates on the cross beam, the tops of two sides of each double-T plate are fixedly provided with the first connecting block and the second connecting block, a splicing seam is formed between the first connecting block and the second connecting block of two adjacent double-T plates, a polyurethane foaming agent is filled in the splicing seam, and the bottoms of the two adjacent first connecting blocks and the two adjacent second connecting blocks are provided with sealing mechanisms; waterproof coiled materials are paved on the tops of the first connecting block and the second connecting block which are close to each other on the two adjacent double T plates together, and a positioning mechanism used for fixing the waterproof coiled materials and the double T plates is arranged between the waterproof coiled materials and the double T plates; cement ridge tiles covering the outside of the waterproof coiled material are fixedly arranged above the first connecting blocks and the second connecting blocks of the adjacent double T-shaped plates, so that the waterproof structure is convenient to lay and install;

2. the positioning mechanism comprises inverted T-shaped bolts pre-buried on the double T plates, a first gasket is sleeved at the top of each inverted T-shaped bolt, through holes enabling a waterproof coiled material to be sleeved on the inverted T-shaped bolts are formed in the positions, corresponding to the inverted T-shaped bolts, of the waterproof coiled material, the second gasket is sleeved at the top of the waterproof coiled material, nuts are connected to the top of the inverted T-shaped bolts in a threaded mode, the waterproof coiled material is sleeved on the inverted T-shaped bolts through the through holes, the second gasket, the waterproof coiled material and the first gasket can be tightly abutted by screwing the nuts, the first gasket can reduce abrasion of the waterproof coiled material by the nuts, and the second gasket can reduce abrasion between the waterproof coiled material and the double T plates, so that the service life of the waterproof;

3. through being located the T type sliding groove that the constant head tank is close to cement ridge tile inboard at two T boards, vertical sliding in the holding tank is connected with a briquetting, the one end of briquetting is located the constant head tank, the other end has set firmly the spacing of sliding connection in the T type sliding groove, the length of spacing is less than the length of T type sliding groove, make spacing can slide and can not break away from T type sliding groove in T type sliding groove, the bottom that the briquetting is located the constant head tank has set firmly the rubber block, the inboard at the bottom edge of cement ridge tile has set firmly the roof, peg graft when the constant head tank in cement ridge tile, the cement roof can support tightly in seal assembly's top, make briquetting downstream support tightly in the bottom of constant head tank with the rubber block, can be sealed with cement ridge tile and constant head tank, prevent that the rainwater from entering into the below that two T boards are located cement ridge tile.

Drawings

FIG. 1 is a weekly test soil of an embodiment;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a cross-sectional view of the first connecting block, the second connecting block and the waterproof roll material;

FIG. 4 is an enlarged view of section C of FIG. 3;

FIG. 5 is an enlarged view of section D of FIG. 3;

fig. 6 is an enlarged view of a portion B of fig. 2.

In the figure, 1, a cross beam; 2. a double-T plate; 21. a first connecting block; 211. a first inclined plane; 22. a second connecting block; 221. a second inclined plane; 23. splicing seams; 24. a polyurethane foaming agent; 25. positioning a groove; 3. waterproof coiled materials; 31. a through hole; 4. cement ridge tiles; 41. positioning blocks; 411. pouring seams; 42. a top plate; 5. a sealing mechanism; 51. a limiting block; 52. a fixed block; 521. a notch groove; 522. accommodating grooves; 53. a guide surface; 54. a rubber pad; 55. a locking assembly; 551. a spring; 552. a sealing strip; 6. a positioning mechanism; 61. an inverted T-bolt; 62. a first gasket; 63. a second gasket; 64. a nut; 7. a seal assembly; 71. a T-shaped sliding groove; 72. briquetting; 73. a limiting strip; 74. a rubber block.

Detailed Description

A roof waterproof structure is shown in figures 1 and 2 and comprises a plurality of double T-shaped plates 2 vertically arranged on a cross beam 1, wherein the tops of two sides of each double T-shaped plate 2 are fixedly provided with a first connecting block 21 and a second connecting block 22, a splicing seam 23 is formed between the first connecting block 21 and the second connecting block 22 of two adjacent double T-shaped plates 2, a polyurethane foaming agent 24 is filled in the splicing seam 23, and the polyurethane foaming agent 24 has the characteristics of good cohesiveness, corrosion resistance, good waterproofness and the like and can prevent water leakage in the splicing seam 23; the sealing mechanisms 5 are arranged at the bottoms of the two adjacent connecting blocks I21 and II 22, and the sealing mechanisms 5 can prevent the polyurethane foaming agent 24 from falling off from the splicing seams 23. Waterproofing membrane 3 has been laid jointly to the top of connecting block 21 and connecting block two 22 that are close to each other on two adjacent two T boards 2, and the top of connecting block 21 and connecting block two 22 of adjacent two T boards 2 has set firmly the cover and has located the outer cement ridge tile 4 of waterproofing membrane 3, and cement ridge tile 4 semicircular in shape, cement ridge tile 4 can be with the automatic outside water conservancy diversion of rainwater, prevent the rainwater to the department of concatenation seam 23.

Referring to fig. 3 and 4, the sealing mechanism 5 includes a limiting block 51 horizontally fixed on one side of the bottom of the double T-plate 2, and a fixing block 52 horizontally fixed on the other side of the double T-plate 2, a gap groove 521 is formed in the fixing block 52 along the length direction thereof, the limiting block 51 can be inserted into the gap groove 521, guide surfaces 53 are symmetrically formed at the top and the bottom of the limiting block 51, and the guide surfaces 53 can facilitate the limiting block 51 to be inserted into the gap groove 521; the bottom and the top that fixed block 52 is located breach groove 521 all set firmly rubber pad 54, and after stopper 51 pegged graft in breach groove 521, stopper 51's spigot surface 53 butt on rubber pad 54, can block up the clearance between stopper 51 and the fixed block 52, prevent that polyurethane foaming agent 24 from flowing down from concatenation seam 23, and fixed block 52 is located the bottom of breach groove 521 and is provided with the locking subassembly 55 of locking stopper 51 and fixed block 52.

Referring to fig. 4, the fixing block 52 is provided with a receiving groove 522 at the bottom of the notch groove 521, the locking assembly 55 includes a plurality of springs 551 fixedly disposed in the receiving groove 522 and uniformly arranged along the length direction of the receiving groove 522, the bottom of the spring 551 is fixedly disposed at the bottom of the receiving groove 522 of the fixing block 52, and the top of the spring 551 is fixedly provided with a sealing strip 552 protruding out of the receiving groove 522; the tension of the spring 551 enables the sealing strip 552 to tightly abut against the limiting block 51, so that the sealing performance of the limiting block 51 and the fixing block 52 can be enhanced, and the connection between the limiting block 51 and the fixing block 52 is more stable.

Referring to fig. 3 and 5, the top of the double T-plate 2 is provided with a positioning mechanism 6 that positions the waterproofing membrane 3. First inclined plane 211 and second inclined plane 221 have been seted up respectively to one side that connecting block one 21 and connecting block two 22 carried on the back mutually, and waterproofing membrane 3 lays on first inclined plane 211 and second inclined plane 221, and the laying of waterproofing membrane 3 is convenient for on first inclined plane 211 and second inclined plane 221, compares in vertical cross-section for tetragonal fixed block 52, and vertical cross-section is required material of waterproofing membrane 3 can be reduced for trapezoidal fixed block 52. The positioning mechanism 6 comprises an inverted T-shaped bolt 61 embedded on the double T-shaped plate 2, a first gasket 62 is sleeved on the top of the inverted T-shaped bolt 61, a through hole 31 is formed in the position, corresponding to the inverted T-shaped bolt 61, of the waterproof coiled material 3, the waterproof coiled material 3 is sleeved on the inverted T-shaped bolt 61 through the through hole 31, a second gasket 63 is sleeved on the top, located on the waterproof coiled material 3, of the inverted T-shaped bolt 61, and a nut 64 is connected to the top of the inverted T-shaped bolt 61 in a threaded mode; screwing up nut 64 can support gasket two 63, waterproofing membrane 3 and gasket one 62 tightly, and gasket one 62 can reduce the wearing and tearing of nut 64 to waterproofing membrane 3, and gasket two 63 can reduce the wearing and tearing between waterproofing membrane 3 and the two T boards 2 to extension waterproofing membrane 3's life. PVC factice is coated between the waterproof coiled material 3, the first gasket 62 and the second gasket 63, the PVC factice can fix the waterproof coiled material 3, the first gasket 62 and the second gasket 63, the contact area between the waterproof coiled material 3, the first gasket 62 and the second gasket 63 is increased, the first gasket 62, the second gasket 63 and the waterproof coiled material 3 are prevented from being separated in the installation process, and therefore abrasion of the waterproof coiled material 3 is reduced.

Referring to fig. 3 and 6, the locating slot 25 has been seted up to the edge that the top of two T boards 2 corresponds cement ridge tile 4, and cement ridge tile 4 is before fixed, pegs graft cement ridge tile 4 in locating slot 25, plays the prepositioning effect to cement ridge tile 4, pours cement mortar with the junction of cement ridge tile 4 and locating slot 25 again, is convenient for fix cement ridge tile 4. The edge that cement ridge tile 4 is close to the outside is provided with locating piece 41, and locating piece 41 pegs graft behind constant head tank 25, makes to form pouring seam 411 between cement ridge tile 4 and the two T boards 2, makes cement mortar can enter into in pouring seam 411, makes to be connected more stably between cement ridge tile 4 and the two T boards 2. The inboard of cement ridge tile 4 and constant head tank 25 is provided with the seal assembly 7 sealed with cement ridge tile 4 and two T boards 2, and seal assembly 7 can be sealed with cement ridge tile 4 and two T boards 2, prevents that water from stretching into in cement ridge tile 4, and then prevents that water from flowing down through concatenation seam 23.

Referring to fig. 6, the sealing assembly 7 includes a T-shaped sliding groove 71 provided in the double T-plate 2 and located in the positioning groove 25 and close to the inner side of the cement ridge tile 4, a pressing block 72 is connected to the T-shaped sliding groove 71 in a vertical sliding manner, one end of the pressing block 72 is located in the positioning groove 25, the other end of the pressing block 72 is fixedly provided with a limiting strip 73 connected to the T-shaped sliding groove 71 in a sliding manner, the length of the limiting strip 73 is smaller than that of the T-shaped sliding groove 71, so that the limiting strip 73 can slide in the T-shaped sliding groove 71 and cannot be separated from the T-shaped sliding groove 71, the bottom of the pressing block 72 located in the positioning groove 25 is fixedly provided with a rubber block 74, and; when cement ridge tile 4 pegged graft in constant head tank 25, cement roof 42 can support tightly in the top of roof 42, makes briquetting 72 downstream support rubber block 74 tightly in the bottom of constant head tank 25, can be sealed cement ridge tile 4 and constant head tank 25, prevents that the rainwater from entering into the below that two T boards 2 are located cement ridge tile 4.

s1, mounting the double-T plate 2 on the beam 1: the double T-shaped plates 2 are arranged on the cross beam 1, so that a splicing seam 23 with the thickness of 30-80 mm is formed between every two adjacent double T-shaped plates 2; meanwhile, the limiting block 51 is inserted into the notch groove 521 of the fixing block 52, and the sealing strip 552 abuts against the limiting block 51 by the tension of the spring 551; then filling a polyurethane foaming agent 24 into the splicing seams 23;

s2, mounting the waterproof coiled material 3 on the tops of the two adjacent double T-shaped plates 2: the waterproof coiled material 3 is laid on the tops of the first connecting block 21 and the second connecting block 22 on the adjacent side of the adjacent double T-shaped plates 2; wherein, the first gasket 62 is sleeved on the inverted T-shaped bolt 61, the waterproof coiled material 3 is sleeved on the inverted T-shaped bolt 61, the second gasket 63 is sleeved on the top of the waterproof coiled material 3, and finally the second gasket 63, the first gasket 62 and the waterproof coiled material 3 are fixed by screwing the nut 64; PVC paste is coated between the waterproof coiled material 3 and the first gasket 62 and the second gasket 63, and the PVC paste can fix the waterproof coiled material 3 and the first gasket 62 and the second gasket 63;

s3, mounting the cement ridge tile 4 above the waterproof coiled materials 3 of the two adjacent double T-shaped plates 2: the bottoms of the two sides of the cement ridge tile 4 are inserted into the positioning grooves 25, and then cement mortar is poured at the joint of the cement ridge tile 4 and the double T-shaped plate 2.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A roof waterproof structure which is characterized in that:

the double-T-shaped connecting structure comprises a plurality of double-T plates (2) vertically arranged on a cross beam (1), wherein the tops of two sides of each double-T plate (2) are fixedly provided with a first connecting block (21) and a second connecting block (22), a splicing seam (23) is formed between the first connecting block (21) and the second connecting block (22) of two adjacent double-T plates (2), a polyurethane foaming agent (24) is filled in each splicing seam (23), and the bottoms of the two adjacent first connecting blocks (21) and the two adjacent second connecting blocks (22) are provided with sealing mechanisms (5);

waterproof coiled materials (3) are paved on the tops of the connecting blocks I (21) and II (22) which are close to each other on the two adjacent double T plates (2), and a positioning mechanism (6) used for fixing the waterproof coiled materials (3) and the double T plates (2) is arranged between the waterproof coiled materials (3) and the double T plates (2);

a cement ridge tile (4) covered outside the waterproof coiled material (3) is fixedly arranged above the first connecting block (21) and the second connecting block (22) of the adjacent double T-shaped plates (2);

positioning grooves (25) are formed in the top of the double-T plate (2) corresponding to the edges of the cement ridge tiles (4), positioning blocks (41) are arranged at the edges, close to the outer sides, of the cement ridge tiles (4), after the positioning blocks (41) are inserted into the positioning grooves (25), pouring seams (411) are formed between the cement ridge tiles (4) and the double-T plate (2), cement mortar is poured into the pouring seams (411) to fix the cement ridge tiles (4) and the double-T plate (2), and sealing assemblies (7) for sealing the cement ridge tiles (4) and the double-T plate (2) are arranged on the inner sides of the cement ridge tiles (4) and the positioning grooves (25);

seal assembly (7) are located the T type that constant head tank (25) is close to cement ridge tile (4) inboard groove (71) that slides including seting up in two T boards (2), the vertical slip in T type groove (71) that slides is connected with a briquetting (72), the one end of briquetting (72) is located constant head tank (25), the other end sets firmly slides and connects spacing (73) in T type groove (71) that slides, the length of spacing (73) is less than the length of T type groove (71) that slides, make spacing (73) can slide and can not break away from T type groove (71) that slides in T type groove (71), briquetting (72) are located the bottom of constant head tank (25) and have set firmly rubber block (74), the inboard at the bottom edge of cement ridge tile (4) has set firmly roof (42).

2. A water resistant roofing structure according to claim 1 wherein:

the sealing mechanism (5) comprises a limiting block (51) horizontally and fixedly arranged on one side of the bottom of the double-T plate (2), and a fixing block (52) horizontally and fixedly arranged on the other side of the double-T plate (2), wherein a notch groove (521) is formed in the fixing block (52) along the length direction of the fixing block, the limiting block (51) can be inserted into the notch groove (521), and guide surfaces (53) are symmetrically formed in the top and the bottom of the limiting block (51);

rubber pads (54) are fixedly arranged at the bottom and the top of the fixed block (52) positioned in the notch groove (521), and a locking assembly (55) for locking the limiting block (51) and the fixed block (52) is arranged at the bottom of the fixed block (52) positioned in the notch groove (521).

3. A water resistant roofing structure according to claim 2 wherein: holding tank (522) have been seted up to fixed block (52) bottom that is located breach groove (521), and locking Assembly (55) are including setting firmly in holding tank (522) and along a plurality of springs (551) that the length direction of holding tank (522) was evenly arranged, and the bottom of spring (551) sets firmly in holding tank (522) bottom of fixed block (52), and the top sets firmly sealing strip (552) that protrusion holding tank (522) set up jointly.

4. A water resistant roofing structure according to claim 1 wherein: and a first inclined plane (211) and a second inclined plane (221) are respectively arranged on the opposite sides of the first connecting block (21) and the second connecting block (22).

5. A water resistant roofing structure according to claim 1 wherein: positioning mechanism (6) are including burying type of falling T bolt (61) on two T boards (2) in advance, the top cover of type of falling T bolt (61) is equipped with gasket one (62), waterproofing membrane (3) are seted up corresponding the position of type of falling T bolt (61) and are made waterproofing membrane (3) cover locate type of falling T bolt (61) go up through-hole (31), the top cover that type of falling T bolt (61) are located waterproofing membrane (3) is equipped with two (63) of gasket, the top threaded connection of type of falling T bolt (61) has nut (64).

6. A roof covering water-proof structure as claimed in claim 5, characterized in that: PVC paste is coated between the waterproof coiled material (3) and the first gasket (62) and between the waterproof coiled material and the second gasket (63).