阅读说明：本技术 一种人行钢桥面铺装结构及其施工方法 (Pavement structure of pedestrian steel bridge deck and construction method thereof ) 是由 徐斌 徐速 尤其 郝向宇 王晗 陈守伟 于 2021-08-16 设计创作，主要内容包括：本发明例提供了一种人行钢桥面铺装结构及其施工方法,所述钢桥面铺装结构从下到上依次包括：钢桥面板、树脂类防水粘结层、玻璃纤维布层、碎石磨耗层。所述施工方法包括以下步骤：S10：对钢桥面板进行预处理；S20：在所述钢桥面板的表面涂布树脂类防水粘结剂,形成所述树脂类防水粘结层；S30：在所述树脂类防水粘结层的上方铺设玻璃纤维布；S40：在所述玻璃纤维布的上方撒布碎石。本发明提供的人行钢桥面铺装结构具有优异的防水及抗裂性能,在不增加人行桥恒载的情况下保证了钢桥面板不受腐蚀。(The invention provides a pedestrian steel bridge deck pavement structure and a construction method thereof, wherein the steel bridge deck pavement structure sequentially comprises the following components from bottom to top: steel bridge deck, resin waterproof bonding layer, glass fiber cloth layer, rubble wearing layer. The construction method comprises the following steps: s10: pretreating the steel bridge deck; s20: coating a resin waterproof adhesive on the surface of the steel bridge deck to form the resin waterproof adhesive layer; s30: laying glass fiber cloth above the resin waterproof bonding layer; s40: and spreading broken stones above the glass fiber cloth. The pedestrian steel bridge deck pavement structure provided by the invention has excellent waterproof and anti-cracking performance, and the steel bridge deck is ensured not to be corroded under the condition of not increasing the constant load of the pedestrian bridge.)

1. The utility model provides a pedestrian steel bridge deck pavement structure, a serial communication port, steel bridge deck pavement structure from the bottom up includes in proper order:

a steel deck plate;

a resin waterproof adhesive layer;

a glass fiber cloth layer;

and (5) a gravel wearing layer.

2. The steel deck pavement structure according to claim 1, wherein the resin waterproof adhesive layer is obtained by modifying polyurethane.

3. The steel deck pavement structure according to claim 1, wherein the thickness of the glass fiber cloth layer is 0.1-4 mm.

4. A construction method of a pavement structure of a humanoid steel bridge deck as claimed in any one of claims 1 to 3, characterized by comprising the following steps:

s10: pretreating the steel bridge deck;

s20: coating a resin waterproof adhesive on the surface of the steel bridge deck to form the resin waterproof adhesive layer;

s30: laying glass fiber cloth above the resin waterproof bonding layer to form the glass fiber cloth layer;

s40: and spreading broken stones above the glass fiber cloth layer to form the broken stone wearing layer.

5. The construction method according to claim 4, wherein the pretreatment is shot blasting treatment so that the surface roughness of the steel bridge deck panel reaches 50-100 μm.

6. The method according to claim 4, wherein the amount of the waterproof resinous binder is 0.1 to 1.0kg/m²。

7. The construction method according to claim 4, wherein the crushed stone is basalt crushed stone or ceramsite.

8. A method for preparing a glass fiber cloth layer, wherein the glass fiber cloth layer is paved on the pedestrian steel bridge deck pavement structure of any one of claims 1 to 3, and the preparation method comprises the following steps:

s100: preparing glass fiber;

s200: preparing the glass fiber into the glass fiber cloth layer.

Technical Field

The invention relates to the field of pavement of pedestrian steel bridge decks, in particular to a pavement structure of a pedestrian steel bridge deck and a construction method thereof.

Background

Along with the increasing living standard of people, the requirement for the pavement of the steel bridge deck of people is continuously improved, and higher requirements are provided for the pavement performance of the steel bridge deck of people.

At present, the mainstream pedestrian steel bridge deck pavement structure at home and abroad mainly comprises face bricks and vulcanized rubber plates. The facing brick has good weather resistance, but has low bonding strength with a steel plate, poor sliding resistance, short service life and long construction and maintenance period, and the surface of the steel plate is easy to be corroded by water due to the easy water permeability of the stone and the insufficient compactness of mortar; the vulcanized rubber plate has good anti-sliding performance under the condition of prefabricating patterns, short construction and maintenance time, low bonding strength with a steel plate, poor protection on corrosion resistance of the steel plate, and poor weather resistance and wear resistance.

The problems of easy delamination, poor wear resistance, poor anti-slip performance, long construction period and the like of the existing pedestrian bridge pavement structure seriously affect the service life and the walking comfort of the pedestrian overpass. Therefore, a pedestrian steel bridge deck pavement technology with strong durability and convenient construction is urgently needed.

Disclosure of Invention

The invention solves the technical problems of easy layer separation, poor wear resistance, poor anti-slip performance and long construction period of the existing pedestrian bridge pavement structure, so that the pedestrian steel bridge deck has strong durability and the pavement process of the pedestrian steel bridge deck is convenient to construct.

In order to solve the above problems, the present invention provides a steel bridge deck pavement structure for pedestrian, which comprises from bottom to top: steel bridge deck, resin waterproof bonding layer, glass fiber cloth layer, rubble wearing layer.

The effect that adopts this technical scheme can reach is as follows: the resin waterproof bonding layer is laid above the steel bridge deck slab, so that water or other harmful substances can be prevented from being retained on the steel bridge deck slab, the steel bridge deck slab is prevented from being corroded by water damage and other harmful substances, the waterproof and waterproof effects are achieved, and the corrosion resistance and the skid resistance of the steel bridge deck slab are improved.

In addition, the glass fiber cloth layer is laid above the resin waterproof bonding layer, and the resin waterproof bonding agent is soaked on the surface of the glass fiber cloth layer, so that the resin waterproof bonding agent can resist high temperature and low temperature due to the fact that the glass fiber cloth layer can resist high temperature and low temperature, the stability of the resin waterproof bonding agent is improved, the resin waterproof bonding layer is not prone to delaminating from the steel bridge deck, and the service life of the pedestrian steel bridge deck is prolonged. Through setting up the glass fiber cloth layer, can increase the crack resistance and the waterproof performance of the structure of mating formation, further promoted the holistic water-proof effects of the structure of mating formation, showing and improving the protective capacities to steel decking.

Finally, the rubble wearing and tearing layer is laid in the top that the glass fiber cloth layer was laid, can compensate the not good disadvantage of glass fiber cloth wear resistance for the upper strata of the structure of mating formation possesses high strength, high tenacity, the advantage of wearing and tearing, can adapt to the deformation of steel bridge face, makes the upper strata of the structure of mating formation have flexibility, and the steel bridge face of pedestrian structure mating formation structure is strong in durability, further improves the life of steel bridge face of pedestrian. Meanwhile, the gravel wearing layer also has certain anti-skidding capacity, and the walking comfort level is improved.

Further, the resin waterproof bonding layer is obtained by modifying polyurethane.

The effect that adopts this technical scheme can reach is as follows: the resin waterproof bonding layer modified by polyurethane has good waterproof performance, can effectively prevent the steel bridge deck from rusting, has high bonding strength, ensures that the upper layer of the pavement layer is tightly bonded with the steel bridge deck, is not easy to delaminate, fully exerts the composite action of the pavement layer and the steel bridge deck, improves the stress condition of the steel bridge deck and the pavement layer, reduces the stress in the pavement layer and improves the anti-cracking performance of the pavement structure.

Furthermore, the thickness of the glass fiber cloth layer is 0.1-4 mm.

The effect that adopts this technical scheme can reach is as follows: the glass fiber cloth layer can prevent water from penetrating into the underlying structure, the corrosion resistance is good, the mechanical strength is high, the waterproof performance of the pavement structure of the pedestrian steel bridge deck is further improved by paving the glass fiber cloth layer with the thickness of 0.1-4mm, the integral anti-cracking performance of the pavement structure is increased, the protection of the steel bridge deck is enhanced, and the steel bridge deck is strong in corrosion resistance, crack resistance and durability.

On the other hand, the invention also provides a construction method of the pavement structure of the humanoid steel bridge deck, which comprises the following steps:

s10: pretreating the steel bridge deck;

s20: coating a resin waterproof adhesive on the surface of the steel bridge deck to form a resin waterproof adhesive layer;

s30: laying glass fiber cloth above the resin waterproof bonding layer to form a glass fiber cloth layer;

s40: and spreading gravels above the glass fiber cloth layer to form a gravels wearing layer.

The effect that adopts this technical scheme can reach is as follows: the steel bridge deck is pretreated, so that the bonding effect of the steel bridge deck and the resin waterproof bonding agent can be improved, the steel bridge deck is more tightly bonded, and the steel bridge deck is not easy to fall off or shift; in addition, the pretreatment, coating, laying and spreading are simple and convenient to operate, strong in practical operability and convenient to construct, and the construction period can be shortened.

Further, the pretreatment is shot blasting rust removal treatment, so that the surface roughness of the steel bridge deck plate reaches 50-100 mu m.

The effect that adopts this technical scheme can reach is as follows: the shot blasting and rust removing device adopts full-automatic dust-free shot blasting equipment to perform shot blasting and rust removing treatment on the steel bridge deck, is simple and convenient to operate, reduces the labor cost and improves the construction work efficiency. In addition, before the shot blasting construction of the surface of the steel bridge deck slab, the steel plate should be kept clean, dry, pollution-free, flash-free, splash-free, pinhole-free, flash-free, burr-free and the like, and the efficiency of cleaning, strengthening, polishing and deburring the surface of the steel bridge deck slab by equipment can be improved. The steel bridge deck plate which cannot be treated by the shot blasting equipment is treated in a manual polishing mode, so that shot blasting and rust removing can be adjusted according to specific conditions, and the operation performance is high. The roughness of the steel bridge deck after shot blasting and rust removal is required to reach 50-100 mu m, the cleanliness is required to reach Sa2.5 grade, the bonding strength between the steel bridge deck and the resin waterproof bonding agent is favorably improved, the steel bridge deck is not easy to corrode and fall off or shift, and the service life of the steel bridge deck is further prolonged. The set indexes balance the difficulty of the shot blasting rust removal process and the relation between the difficulty and the bonding degree, and reduce the requirements on cleanliness and roughness on the basis of ensuring tight bonding, so that the steel bridge deck pavement construction process is more efficient and faster.

Furthermore, the dosage of the resin waterproof adhesive is 0.1-1.0kg/m²。

The effect that adopts this technical scheme can reach is as follows: the dosage of the resin waterproof binder is 0.1-1.0kg/m²The adhesive has good adhesive effect, and when the resin waterproof adhesive is uniformly coated on the steel bridge deck, special small spraying equipment or a manual spraying mode can be used, so that the operation is simple and convenient; the steps are finished within 2-4 hours after the steel bridge deck panel is subjected to shot blasting and rust removal, so that the resin waterproof adhesive is tightly adhered to the steel bridge deck panel, and the adhesion strength is improved. In addition, the resin waterproof binder is fully and uniformly stirred before coating, so that the influence of the layering and precipitation phenomena of the resin waterproof binder in the transportation and storage processes on the construction quality is prevented, and the bonding effect and the waterproof effect of the resin waterproof binder are further improved. On the other hand, the amount of the resin waterproof binder is 0.1-1.0kg/m²The glass fiber cloth layer can be completely soaked by the resin waterproof binder, the bonding effect of the glass fiber cloth layer and the broken stone wearing layer is enhanced, and the waterproofness, the corrosion resistance and the durability of the whole paving structure are further improved.

Furthermore, the crushed stone is basalt crushed stone or ceramsite.

The effect that adopts this technical scheme can reach is as follows: the method selects the high-toughness hard wear-resistant macadam, and partially embeds the macadam into the resin waterproof binder during construction, wherein the basalt macadam or ceramsite has certain toughness and strength, and can meet the paving requirement of a macadam wearing layer. The broken stone effectively increases the surface friction coefficient of the pavement structure, is tightly combined with the resin waterproof binder and is not easy to fall off. Therefore, the gravel wearing layer can eliminate road noise, improve the road skid resistance, easily discharge road surface accumulated water and obviously improve the driving comfort.

The embodiment of the invention provides a preparation method of a glass fiber cloth layer, wherein the glass fiber cloth layer is paved on a pedestrian steel bridge deck pavement structure of any technical scheme, and the preparation method comprises the following steps:

s100: preparing glass fiber;

s200: preparing the glass fiber into the glass fiber cloth layer.

In the above technical solution, S100 includes:

according to the weight percentage of glass fiber: asbestos fibers: carboxylic acid: silane coupling agent: polyacrylic acid resin: diisodecyl phthalate ═ 32-38: (20-30): (4-6): (4-6): (5-10): (5-10) feeding the glass fiber, the asbestos fiber, the carboxylic acid, the silane coupling agent, the polyacrylic resin and the diisodecyl phthalate into a mixing roll, mixing for 1 hour at the temperature of 170-180 ℃, and discharging to obtain the modified glass fiber. In the above embodiment, the carboxylic acid activates the surfaces of the glass fibers and the asbestos fibers, and the interfacial bonding force between the glass fibers and the asbestos fibers and the resin is increased by the silane coupling agent. In particular, the molecular chain of the glass fiber is twisted with the polyacrylic resin and the diisodecyl phthalate to form a cross-linked twisted structure, so that the bonding force between the fiber and the resin is further enhanced, and the uniform stability of the pavement structure of the pedestrian steel bridge deck is improved.

In summary, the technical solution provided by the present invention has one or more of the following advantages:

(1) the glass fiber cloth layer is arranged in the pavement structure, so that the waterproof and anti-cracking performance of the pavement structure is improved, and the steel bridge deck is prevented from being corroded under the condition of not increasing the constant load of the passenger bridge;

(2) the resin waterproof bonding layer is modified by polyurethane, has high bonding strength with a steel bridge deck, obviously improves the shear resistance, completely meets the performance requirement of the pedestrian bridge under the normal working condition, gives larger safety margin under the abnormal working condition, and solves the problems of short service life and easy damage under the abnormal working condition existing in the prior traditional pedestrian bridge pavement.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a deck pavement structure of pedestrian steel provided by the invention.

FIG. 2 is a flow chart of the construction method of the pedestrian steel bridge deck pavement structure provided by the invention.

Description of the main element symbols:

1-steel deck slab; 2-resin waterproof adhesive layer; 3-a glass fiber cloth layer; 4-gravel wearing course.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

[ first embodiment ] A method for manufacturing a semiconductor device

To the problem that the pedestrian bridge pavement structure that exists among the prior art exists easily takes off the layer, wear resistance is poor, skid resistance is poor etc, this embodiment provides a pedestrian steel bridge deck pavement structure.

Referring to fig. 1, the deck pavement structure of pedestrian steel from the bottom up includes in proper order: : steel bridge deck 1, resin waterproof bonding layer 2, glass fiber cloth layer 3, rubble wearing layer 4.

On one hand, the resin waterproof bonding layer 2 tightly bonds the steel bridge deck 1, the upper glass fiber cloth layer 3 and the broken stone wearing layer 4 to prevent relative sliding between the layered structures, and the waterproof function of the resin waterproof bonding layer can also protect the steel bridge deck 1 from being corroded. Preferably, the resin waterproof adhesive layer 2 is urethane-modified to have a very high adhesive strength with the steel deck plate, and thus has more excellent adhesive and waterproof properties. The combination of the multilayer structure and the hierarchical structure of the steel bridge deck adopts the polyurethane modified resin waterproof binder with excellent performance, so that the pavement structure is more stable and firm and has strong durability.

On the other hand, the glass fiber cloth layer 3 is laid on the surface of the resin waterproof bonding layer 2, so that the glass fiber cloth layer 3 is soaked by the resin waterproof bonding agent, the glass fiber cloth layer 3 and the gravel wearing layer 4 can be tightly bonded, and the waterproof performance and the corrosion resistance of the pavement structure are improved. The thickness of the glass fiber cloth layer 3 is preferably 0.1-4mm, so that the overall crack resistance of the pavement structure can be effectively improved.

On the other hand, lay rubble wearing and tearing layer 4 on glass fiber cloth layer 3's surface, rubble wearing and tearing layer 4 is formed by the rubble dispensing, possesses certain deformability, can adapt to the deformation of steel bridge face for the upper strata of the structure of mating formation has flexibility, improves the life of pedestrian steel bridge face, also possesses certain non-skid property simultaneously, has improved the comfort level of walking.

[ second embodiment ]

According to a first embodiment, referring to fig. 2, the embodiment provides a construction method of a pedestrian steel bridge deck pavement structure, which includes the following steps:

s10: performing shot blasting and rust removing treatment on the steel bridge deck plate to ensure that the surface roughness of the steel bridge deck plate reaches 50-100 mu m and the cleanliness reaches Sa2.5 grade.

S20: coating a resin waterproof adhesive on the surface of the steel bridge deck to form a resin waterproof adhesive layer; wherein the resin waterproof binder is 0.2kg/m²。

S30: laying glass fiber cloth above the resin waterproof bonding layer to form a glass fiber cloth layer; wherein, the thickness of the glass fiber cloth layer is 1 mm.

S40: and spreading gravels above the glass fiber cloth layer to form a gravels wearing layer.

It is worth noting that the steel plate is kept clean, dry, pollution-free, free of welding beading, free of spattering, free of pinholes, free of flash, free of burrs and the like before the shot blasting construction of the surface of the steel bridge deck. The steel bridge deck is shot-blasted and derusted by full-automatic dust-free shot blasting equipment, the shot-blasting and derustation method is adjusted according to actual conditions, and the steel bridge deck which cannot be processed by the shot blasting equipment is processed by manual polishing.

When the resin waterproof adhesive is coated, the resin waterproof adhesive is uniformly sprayed on the steel bridge deck by using special small spraying equipment or adopting a manual spraying mode; the steps are completed within 2-4 hours after the steel bridge deck is subjected to shot blasting and rust removal. In order to prevent the resin waterproof binder from being layered and precipitated in the transportation and storage processes to influence the construction quality, the resin waterproof binder is fully and uniformly stirred before coating. The electric stirrer is preferably adopted for stirring the bonding material, the stirring speed is preferably 80-120r/min, the stirring time is preferably 30-40s, the stirring efficiency is improved, and the construction time is shortened.

When the glass fiber cloth is laid, the glass fiber cloth needs to be completely soaked by the resin waterproof adhesive, the waterproof performance of the glass fiber cloth is further enhanced, the protection of a steel bridge deck is enhanced, and meanwhile, the adhesive strength of the glass fiber cloth and a broken stone wearing layer is enhanced, so that the whole laying structure is not easy to shift and has strong durability; when the glass fiber cloth can not be completely soaked, the resin waterproof binder is covered on the surface of the glass fiber cloth by adopting a manual coating method, so that the glass fiber cloth is ensured to be completely soaked by the resin waterproof binder.

Because the glass fiber cloth is completely soaked by the resin waterproof adhesive, when the broken stone is spread on the glass fiber cloth layer, the broken stone can be tightly adhered on the glass fiber cloth, thereby forming a broken stone wearing layer. The special gravel spreader is adopted to spread the gravel, and the paving requirement of the gravel wearing layer is as follows: the crushed stone has 50-70% of volume embedded with a binder, and is basalt crushed stone which has the advantages of high strength, high toughness and abrasion resistance. The embedded volume of the macadam is too small to easily fall off in the using process, and the embedding amount is too large to influence the performances of noise reduction, skid resistance and the like of the macadam wearing layer, so that the macadam is preferably embedded with 50-70% of volume of the binder based on test detection. The basalt broken stone of this example has 55% of its volume embedded in the resin-based waterproof adhesive.

[ third embodiment ]

The embodiment provides a construction method of a pavement structure of a pedestrian steel bridge deck, which is shown in fig. 2 and comprises the following steps:

s10: performing shot blasting and rust removing treatment on the steel bridge deck plate to ensure that the surface roughness of the steel bridge deck plate reaches 50-100 mu m and the cleanliness reaches Sa2.5 grade.

S20: coating a resin waterproof adhesive on the surface of the steel bridge deck to form a resin waterproof adhesive layer; wherein the resin waterproof binder is 0.5kg/m²。

S30: laying glass fiber cloth above the resin waterproof bonding layer to form a glass fiber cloth layer; wherein, the thickness of the glass fiber cloth layer is 2 mm.

S40: and spreading gravels above the glass fiber cloth layer to form a gravels wearing layer.

Specifically, compared with the second embodiment, the difference is that the amount of the resin waterproof adhesive is different from the thickness of the glass fiber cloth layer, and 60% of the volume of the basalt broken stone is embedded in the resin waterproof adhesive.

[ fourth example ] A

The embodiment provides a construction method of a pavement structure of a pedestrian steel bridge deck, which is shown in fig. 2 and comprises the following steps:

s10: performing shot blasting and rust removing treatment on the steel bridge deck plate to ensure that the surface roughness of the steel bridge deck plate reaches 50-100 mu m and the cleanliness reaches Sa2.5 grade.

S20: coating a resin waterproof adhesive on the surface of the steel bridge deck to form a resin waterproof adhesive layer; wherein the resin waterproof binder is 0.8kg/m²。

S30: laying glass fiber cloth above the resin waterproof bonding layer to form a glass fiber cloth layer; wherein, the thickness of glass fiber cloth layer is 3 mm.

S40: and spreading gravels above the glass fiber cloth layer to form a gravels wearing layer.

Specifically, compared with the second embodiment, the difference is that the amount of the resin waterproof adhesive is different from the thickness of the glass fiber cloth layer, and 65% of the volume of the basalt broken stone is embedded in the resin waterproof adhesive.

The performance of the pavement structure provided by the embodiment of the invention is detected by adopting the following standards: t0931-2008 (three meters ruler method for flatness detection); t0964-2008 (pendulum determination of road surface friction coefficient); t0971-2008 (detecting the water seepage coefficient of the asphalt pavement); the detection results thereof satisfy the parameters shown in table 1.

Table 1 sidewalk test data

Test items	Unit of	Test results	Technical requirements	Test method
					Flatness of	mm	4	≤5	T 0931
Coefficient of friction	BPN	68	≥40	T 0964
					Coefficient of water permeability	mL/min	Substantially free of water penetration	Substantially free of water penetration	T 0971

According to the table 1, the pavement structure of the pedestrian steel bridge deck provided by the embodiment of the invention has good flatness and high walking comfort; the friction coefficient is high, the wear resistance is good, and the skid resistance is good; basically has no water seepage phenomenon, good waterproof performance, difficult delamination of the steel bridge deck structure, difficult water erosion and good corrosion resistance. Thereby the service life of the pedestrian steel bridge deck is long.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.