JP6896981B2 - Temporary pavement plate, temporary pavement structure, and temporary pavement structure construction method - Google Patents

Description

The present invention is a technique relating to road pavement, and more specifically, relating to a temporary pavement plate that can be used as temporary pavement for temporarily passing a vehicle, a structure using the temporary pavement plate, and a method for constructing the structure. Is.

It has been pointed out that the construction infrastructure (hereinafter referred to as "construction infrastructure"), which has been intensively developed during the period of high economic miracle, has already deteriorated considerably. In 2014, the "Proposal for Full-scale Implementation of Measures for Road Aging (Social Infrastructure Development Council)" was compiled, and "In the near future, human life and society such as the collapse of bridges, etc." It will cause a fatal situation related to the equipment, "he warned, strongly advocating the importance of maintenance of construction infrastructure.

On the other hand, the "Road Bridge Specification", which is the standard for designing road bridges, has been reviewed from time to time since the 1945 edition was published, and especially after the Hyogo-ken Nanbu Earthquake, major revisions were made. There is. As a result, even if the bridge has a sufficient yield strength in the past, the yield strength is often insufficient according to the current design standards.

In this way, bridges are often reinforced or rebuilt nowadays for two reasons: aging and lack of strength. Even if the main structure of the bridge is sound, if the pavement deteriorates, pavement work will be carried out accordingly. In particular, asphalt pavement, which is said to occupy about 90% of the roads in Japan, has a lifespan of 10 years, and considering the number of road bridges nationwide, the pavement work is frequently carried out. On the other hand, the decks that support the pavement are also deteriorating, and deck renewal work is being carried out in various places to replace the deteriorated decks with new ones.

However, the current road bridge secures a large amount of traffic, that is, it supports the movement of people and the distribution industry, and its service cannot be stopped easily. In particular, viaducts on motorways such as highways allow tens of thousands of vehicles to pass through each day, and if they do not pass through, the amount of economic loss will be immeasurable, and emergency patients will be affected. If it cannot be transported, it could be a social problem. Therefore, when constructing a road bridge in service, early traffic opening is always required, and the builder is trying to shorten the construction period in order to realize early opening.

By the way, even during construction, traffic may be partially and temporarily opened, for example, only in one lane. In this case, it is common that the pavement as a provisional type (hereinafter referred to as "temporary pavement") is laid instead of the completed type pavement (hereinafter referred to as "main pavement"). In addition, asphalt pavement is usually adopted as temporary pavement rather than concrete pavement due to the problem of the construction period. However, although not as much as concrete pavement work, asphalt pavement work also requires a considerable amount of time to complete the pavement because it undergoes processes such as leveling, compaction, and curing (cooling). .. Therefore, a technology that enables the construction of temporary pavement in a short period of time has been long-awaited.

To build temporary pavement in a short period of time, it is conceivable to use a precast pavement version. Various techniques related to precast pavement slabs have been proposed so far. For example, in Patent Document 1, a technique using a precast concrete pavement slab and capable of absorbing expansion and contraction after operation is provided for a connecting portion of the pavement slab. is suggesting.

Japanese Unexamined Patent Publication No. 04-120302

Conventionally used precast pavement slabs, including the precast concrete pavement slab shown in Patent Document 1, are heavy in weight, and there is a problem that the workability is inferior due to considerable labor required for transportation work, installation work, or removal work. .. Furthermore, another problem can be pointed out when using precast pavement slabs for steel deck bridges. Normally, adjacent steel decks are connected by friction stir welding with high-strength bolts using a splicing plate, so a plurality of bolts are arranged at the connecting portion of the steel decks. On the other hand, the precast pavement slab will be placed directly on the steel deck slab, but since there are bolts (especially the head) at the connecting part of the steel deck slab, this becomes a barrier and the precast pavement slab should be installed. I can't. It is conceivable to install the precast pavement slab avoiding only the connecting part of the steel deck, but in this case, a special structure must be provided at the connecting part of the steel deck (especially the bolt part).

An object of the present invention is to solve the problems of the prior art, that is, to provide a temporary pavement plate that is lightweight and has excellent workability, a structure using the temporary pavement plate, and a method for constructing the structure. .. Another object of the present invention is to provide a temporary pavement slab that can secure a space for accommodating a bolt head in a connecting portion of a steel deck, a structure using the temporary pavement slab, and a method for constructing the structure. It is one.

The present invention has a structure in which a pavement is provided on a thin-walled plate-shaped support plate to reduce the weight of the temporary pavement plate, and a support leg is provided on the lower surface side of the support material to lower the support plate. It was made by paying attention to the point of providing a space in the space, and it is an invention made based on an unprecedented idea.

The temporary pavement slab of the present invention is installed on the floor slab of a bridge to run a vehicle, and is provided with a support plate, a pavement portion, and support legs. The support plate is a thin-walled plate-like member, and a pavement portion is provided on the upper surface side of the support plate, and support legs are provided on the lower surface side of the support plate. The temporary pavement plates arranged adjacent to each other can be connected by bolts.

In the temporary pavement plate of the present invention, a plurality of support legs may be fixed to the lower surface side of the support plate. As a means for fixing, bolts, welding, and adhesive joining can be applied. In this case, when the temporary pavement slab is installed on the floor slab, a margin space is formed between the floor slab and the support plate by the support legs. If the bolt to be used is a steel deck, stud bolts attached to the upper surface of the deck by stud welding can also be used. Further, like a general bolt, a hole can be provided in the floor slab and a nut can be used to connect the deck.

The temporary pavement structure of the present invention is a structure in which a vehicle runs on a bridge, and includes a deck of the bridge and a temporary pavement slab installed on the deck.

The temporary pavement structure of the present invention may further include a boundary temporary pavement slab installed at a connecting portion of the floor slab. Here, the connecting portion is a portion where two adjacent decks are connected, and is an area set by a predetermined width from the adjacent boundary of the decks. The boundary temporary pavement plate has a thin-walled plate-shaped boundary support plate, a boundary pavement portion provided on the upper surface side of the boundary support plate, and a plurality of boundary support legs arranged on the lower surface side of the boundary support plate. Is. The temporary pavement slab is installed in the general part of the floor slab excluding the connecting portion, and one boundary temporary pavement slab is installed across two adjacent floor slabs. At this time, a margin space (a space that can accommodate the heads of bolts for connecting the two floor slabs) is formed between the floor slab and the boundary support plate by the boundary support legs.

The temporary pavement structure of the present invention may also include a temporary pavement plate in which an unpaved portion (a portion where no paved portion is provided) is formed on a part of the upper surface of the support plate on the boundary temporary pavement plate side. .. In this case, the boundary temporary paving plate is installed so that the boundary support plate overlaps the support plate in the unpaved portion, and the boundary support plate, the support plate, and the floor slab are sewn and fixed by bolts.

The temporary pavement structure construction method of the present invention is a method of constructing a temporary pavement structure in which a vehicle runs on a bridge, and is a method including a temporary pavement plate installation step and a temporary pavement plate fixing step. In the temporary pavement slab installation process, the temporary pavement slab is installed so that the floor slab and the support plate face each other vertically with the support legs sandwiched between them. In the temporary pavement slab fixing process, the temporary pavement slab is fixed to the temporary pavement slab by sewing the floor slab and the support plate with bolts.

The temporary pavement structure construction method of the present invention may be a method further including a temporary pavement slab removing step of removing the temporary pavement slab and a main pavement step of performing main pavement on the floor slab.

The temporary pavement structure construction method of the present invention may be a method further including a boundary temporary pavement plate installation step and a boundary temporary pavement plate fixing step. The temporary pavement structure in this case includes a boundary temporary pavement plate. In the boundary temporary pavement installation process, the boundary temporary pavement slab is installed so that the floor slab and the boundary support plate face each other vertically with the boundary support legs sandwiched between them. In the boundary temporary pavement fixing step, the boundary temporary pavement slab is fixed to the floor slab by sewing the floor slab and the boundary support plate with bolts. Then, a margin space (a space that can accommodate the heads of bolts for connecting the two decks) is formed between the deck and the boundary support plate by the boundary support legs.

The temporary pavement structure construction method of the present invention may be a method further including a boundary temporary pavement slab installation step, a boundary temporary pavement slab fixing step, and a post-pavement step. The temporary pavement structure in this case includes a boundary temporary pavement slab, and the boundary temporary pavement slab is formed by a boundary support plate and a boundary support leg (that is, no pavement portion is provided). In the post-paving process, a paving portion is formed on the upper part of the boundary support plate. In this case as well, a margin space is formed between the floor slab and the boundary support plate by the boundary support legs.

The temporary pavement plate, the temporary pavement structure, and the temporary pavement structure construction method of the present invention have the following effects.
(1) Even if the existing structure and the new structure are mixed during the construction such as renewal of the deck, it is relatively easy to temporarily open the general traffic.
(2) Since the temporary pavement plate of the present invention is extremely lightweight, it can be easily handled, and therefore, the temporary pavement structure of the present invention can be easily constructed by the temporary pavement structure construction method of the present invention.
(3) By forming a "marginal space" for accommodating the bolt head and the bolt shaft portion, a temporary pavement structure can be easily constructed even at the connecting portion of the steel deck.
(4) By using the temporary pavement plate of the present invention, a storage space can be formed in the connecting portion where the joint bolt is located, so that the pavement work around the joint bolt can be omitted and the area around the joint bolt can be omitted. It is possible to efficiently perform main pavement without removing temporary pavement.
(5) When the floor slab renewal work is carried out within the limited construction time, the time for installing the temporary pavement can be shortened by installing the temporary pavement slab on the floor slab in advance and then carrying it in. As a result, the work can be performed efficiently, and the amount of floor slab renewal can be increased.
(6) Even when pavement work is generally not possible due to rainy weather, it is possible to use the precast temporary pavement slab, which leads to risk reduction toward opening traffic.
(7) By precasting the temporary pavement, the amount of pavement construction at the site can be reduced (or omitted), so that rapid construction becomes possible. In addition, the amount of pavement equipment brought in will be reduced, making the site more compact.
(8) If the dimensions of the temporary pavement plate are the same, it can be reused many times, which is more economical than before.

(A) is a cross section showing a steel deck connected by a bolt and a splicing plate, and (b) is a plan view showing a connecting part and a general part. (A) is a cross-sectional view showing a normal temporary pavement plate and a boundary temporary pavement plate, and (b) is a plan view showing a normal temporary pavement plate. (A) is a cross-sectional view showing the details of a normal temporary pavement slab, and (b) is a cross-sectional view showing a normal temporary pavement slab in which an unpaved portion is formed. A cross-sectional view showing a normal temporary pavement plate in which planar or columnar support legs are arranged on the lower surface side of the support plate. (A) is a cross-sectional view showing a boundary temporary pavement plate in which a boundary pavement portion is provided on the upper surface of the boundary support plate, and (b) is a cross-sectional view showing a boundary temporary pavement plate in which the upper surface of the boundary support plate is unpaved. (A) is a cross-sectional view showing a temporary pavement structure using a normal temporary pavement slab, and (b) is a cross-sectional view showing a temporary pavement structure using a boundary temporary pavement slab. (A) is a cross-sectional view showing a state before the boundary temporary pavement slab is installed on the steel deck, and (b) is a cross-sectional view showing a state where the boundary temporary pavement slab is fixed to the steel deck. A flow chart showing the main process flow of a temporary pavement structure construction method using a standard boundary temporary pavement plate. The step diagram which shows the main process of the temporary pavement structure construction method using the standard boundary temporary pavement plate. FIG. 3 is a step diagram for performing half-width construction using the temporary pavement structure of the present invention in order to replace the existing concrete deck with a steel deck. A flow chart showing the main process flow of a temporary pavement structure construction method using an unpaved boundary temporary pavement plate. The step diagram which shows the main process of the temporary pavement structure construction method using the unpaved boundary temporary pavement slab.

An example of a temporary pavement plate, a temporary pavement structure, and an embodiment of a temporary pavement structure construction method of the present invention will be described with reference to the drawings. The temporary pavement structure of the present invention utilizes the temporary pavement plate of the present invention, and the temporary pavement structure construction method of the present invention is a method of constructing the temporary pavement structure of the present invention. Therefore, first, the temporary pavement version of the present invention will be described, and then the temporary pavement structure and the temporary pavement structure construction method of the present invention will be described.

1. 1. Temporary pavement version First, the temporary pavement version of the present invention will be described. The temporary pavement slab of the present invention is installed on the deck of a bridge (particularly, a steel deck or a precast concrete deck), and is connected to the deck installed at the "connecting part". It is roughly divided into those installed in the range excluding the part (hereinafter referred to as "general part"). Therefore, first, the "connecting portion" will be described with reference to FIG. Here, for convenience, the temporary pavement plate installed in the "connecting part" is referred to as the "boundary temporary pavement plate", and the temporary pavement plate installed in the "general part" is referred to as the "ordinary temporary pavement plate". And. The thickness of the temporary pavement plate (dimensions in the vertical direction) is set to about 50 mm to 100 mm as in the conventional pavement, and may be set to match the height of the existing pavement. Further, although the example of installing on a steel deck is described here for convenience, the temporary pavement slab of the present invention may be installed on a precast concrete deck or the like in addition to the steel deck. it can.

(Connecting part and general part)
When a bridge deck is formed using a steel deck, a plurality of steel decks are arranged in a plane, and the entire deck is constructed by connecting these steel decks. As described above, adjacent steel decks and steel decks (steel decks) are spliced plates and high-strength bolts instead of on-site welding as shown in Fig. 1 (a), especially when rapid construction is required. It is generally connected by friction welding. In FIG. 1A, the left steel deck 100L and the right steel deck 100R are adjacent to each other, and the upper and lower splicing plates Sp are arranged so as to span the two steel decks 100. The left side steel deck 100L and the right side steel deck 100R are connected by sewing and fixing the splicing plate Sp of No. 1 with a plurality of splicing bolts Bt. Although it depends on the scale of the bridge (the size of the bridge surface) and the size of the steel deck 100 to be used, it is usually adjacent in both the bridge axis direction and the bridge axis perpendicular direction as shown in FIG. 1 (b). Steel decks 100 are connected to each other.

The "connecting portion" is a region set in a portion where adjacent steel deck 100s are connected to each other as shown in FIG. 1 (b). Specifically, a predetermined width Lb is provided (that is, set back) in each steel deck 100 from a boundary line (hereinafter, referred to as “adjacent boundary”) generated between two adjacent steel decks 100. ) The obtained area is the connecting part. Further, the range of the steel deck 100 excluding the connecting portion is the “general portion”, and in FIG. 1B, six steel deck 100s are arranged and general portions are set at six locations. The temporary pavement plate installed in the general part is the "ordinary temporary pavement plate", and the temporary pavement plate installed in the connecting part is the "boundary temporary pavement plate".

Hereinafter, each of the main elements constituting the temporary paved plate of the present invention will be described in detail.

(Normal temporary pavement version)
FIG. 2A is a cross-sectional view showing the ordinary temporary pavement plate 210 and the boundary temporary pavement plate 220 of the temporary pavement plate 200, and FIG. 2B is a plan view showing the ordinary temporary pavement plate 210. Further, FIG. 3A is a cross-sectional view showing the details of the ordinary temporary pavement plate 210. As shown in FIGS. 2A and 3A, the ordinary temporary pavement plate 210 includes a support plate 211, a pavement portion 212, and support legs 213. The size of the ordinary temporary pavement plate 210 can be appropriately designed. For example, the dimension in the direction perpendicular to the bridge axis can be matched with the width dimension of the general portion, and the dimension in the direction of the bridge axis can be 7.5 to 15 m. As will be described later, the ordinary temporary pavement plate 210 can be connected to the adjacent boundary temporary pavement plate 220 by bolts.

The support plate 211 is a thin and plate-shaped member, and for example, a steel plate, a concrete plate having considerable strength, an FRP plate, an industrial plastic material, or the like can be used.

The pavement portion 212 is provided on the upper surface side of the support plate 211, and is laid on substantially the entire surface of the support plate 211 as can be seen from FIG. 2 (b). The pavement portion 212 can be formed by concrete pavement, but asphalt pavement that can be formed by a thin layer (for example, 40 mm) is more suitable for weight reduction. When the pavement portion 212 is formed by asphalt pavement, various materials such as dense particle size asphalt concrete and coarse particle size asphalt concrete can be used, and drainage pavement and permeable pavement can also be adopted.

In the ordinary temporary pavement plate 210, the pavement portion 212 may be provided on substantially the entire surface of the support plate 211, or an unpaved portion may be formed on a part of the pavement portion 212. FIG. 3B is a cross-sectional view showing a normal temporary pavement plate 210 in which the unpaved portion 215 is formed. The unpaved portion 215 is a portion where the paved portion 212 is not provided (omitted) and is formed at a portion in contact with the boundary temporary paving plate. Therefore, as shown in FIG. 3 (b), the support plate 211 It is formed on the periphery.

The ordinary temporary pavement slab 210 is fixed to the steel deck slab 100 with bolts as described later. Therefore, the pavement portion 212 is provided with a bolt hole 214 for inserting a bolt. Further, the support plate 211 is also provided with a small hole for inserting the bolt at the position where the bolt hole 214 is provided. As a result, when the ordinary temporary pavement slab 210 is installed on the steel deck slab 100, the bolt can be inserted through the bolt hole 214 to reach the steel deck slab 100. Therefore, of course, the bolt hole 214 is not paved.

As shown in FIG. 3A, the support legs 213 are provided on the lower surface side of the support plate 211. By providing the support legs 213, when the ordinary temporary pavement slab 210 is installed on the steel deck slab 100, a predetermined space (hereinafter, referred to as "accommodation space") is provided between the support plate 211 and the steel deck slab 100. It is formed. In this figure, the plate-shaped support legs 213 are fixed to both ends (that is, two places) of the support plate 211 in a parallel posture, but of course, the present invention is not limited to this, and the plate-shaped support legs 213 can be arranged in parallel to three or more places. It can also be arranged in a grid pattern.

The support leg 213 is a thin-walled plate-shaped member, and can also serve as a reinforcing rib (for example, a steel plate such as flat steel) for reinforcing the support plate 211. Further, as the support plate 211, in addition to a plate-shaped member, a rod-shaped member such as a reinforcing bar or a bolt, or a columnar or planar member such as a sleeper as shown in FIG. 4 can be used, or like a reinforcing rib. It is also possible to use a thin plate-shaped member and a columnar member such as a sleeper (for example, a rectangular parallelepiped member) in combination. The material of the support plate 211 may be steel, resin, wood, or the like. In particular, in the case of a columnar or planar shape, it is preferable to use a resin or wooden support leg 213 for weight reduction.

The support legs 213 can be fixed to the lower surface of the support plate 211, or the support legs 213 and the support plate 211 can be used as separate bodies. For example, when a thin plate-shaped member or a rod-shaped member (reinforcing bar, bolt, etc.) is used as the support leg 213, it is fixed to the lower surface of the support plate 211, and a columnar member or a planar member such as a sleeper is used. In some cases, it can be appropriately designed according to the member to be used, such as making it a separate body (of course, it may be fixed).

When the support plate 211 and the support leg 213 are separated, the support leg 213 may be an elastic member that can withstand a certain amount of vertical load like a sleeper and whose displacement amount is very small. Further, the horizontal load acting on the support leg 213 is resisted by the frictional force with the floor slab, so that the bottom surface of the support leg 213 generates a predetermined frictional force with the floor slab. It is preferable to use a surface having a friction coefficient. Further, if a predetermined frictional force can be obtained between the floor slab and the support legs 213 and the support legs 213 and the support slab 213, a plurality of support legs 213 can be laminated in the vertical direction. In this case, the height can be easily adjusted, which is preferable.

(Boundary temporary pavement version)
FIG. 5 is a cross-sectional view showing the boundary temporary pavement plate 220 of the temporary pavement plate 200, and FIG. 5A is a cross-sectional view showing the boundary temporary pavement plate in which the boundary pavement portion 222 is provided on the upper surface of the boundary support plate 221. (B) is a cross-sectional view showing a boundary temporary paved plate in which the upper surface of the boundary support plate 221 is unpaved. Here, for convenience, the boundary temporary paving plate 220 shown in FIG. 5 (a) is particularly referred to as “standard boundary temporary paving plate 220”, and the boundary temporary paving plate 220 shown in FIG. 5 (b) is particularly referred to as “unpaved”. Boundary temporary pavement version 220 ". As will be described later, the boundary temporary pavement plate 220 can be connected to the adjacent ordinary temporary pavement plate 210 by bolts.

As shown in FIG. 5A, the standard boundary temporary pavement plate 220 includes a boundary support plate 221, a boundary pavement portion 222, and a boundary support leg 223, and although the plane dimensions are different, basically FIG. 3 It has the same structure as the ordinary temporary pavement plate 210 shown in (a). Each member constituting the boundary temporary pavement plate 220 is provided with a "boundary" to distinguish it from the ordinary temporary pavement plate 210, but the boundary support plate 221 is the support plate 211 described in the ordinary pavement portion 210. The boundary pavement portion 222 is the same as the pavement portion 212, the boundary support leg 223 is the support leg 213, and the boundary bolt hole 224 is the same as the bolt hole 214. Similarly, when the boundary temporary pavement slab 220 is installed on the steel deck slab 100, a storage space is formed between the boundary support plate 221 and the steel deck slab 100.

As shown in FIG. 5B, the unpaved boundary temporary paving plate 220 is provided with the boundary support plate 221 and the boundary support leg 223, similarly to the standard boundary temporary paving plate 220. However, unlike the standard boundary temporary pavement version 220, the boundary pavement portion 222 is omitted. For example, the pavement height of an adjacent existing RC deck may have changed from the beginning of construction. In this case, if this unpaved boundary temporary pavement slab 220 is used, temporary pavement can be constructed at the site according to the height of the existing structure, and the paved surface of the existing RC floor slab and the ordinary temporary pavement slab 210 can be constructed. As a result of smoothing without steps, it is possible to contribute to smooth running of the vehicle. The boundary support plate 221 of the unpaved boundary temporary paving plate 220 and the boundary support plate 221 of the standard boundary temporary paving plate 220 are the same (that is, the same as the support plate 211 of the ordinary temporary paving plate). , The unpaved boundary support leg 223 and the standard boundary temporary paving plate 220 boundary support leg 223 are similar (that is, the same as the normal temporary paved version support leg 213). In other words, the unpaved boundary temporary paving plate 220 is the standard boundary temporary paving plate 220 from which the boundary paving portion 222 is removed.

2. Temporary pavement structure Next, the temporary pavement structure of the present invention will be described. The temporary pavement structure of the present invention is a structure including the temporary pavement plate 200 described so far. Therefore, avoiding explanations overlapping with the contents described in the temporary pavement plate 200, the temporary pavement structure of the present invention should be avoided. Only the contents peculiar to will be explained. That is, the contents not described here are the same as those described in "1. Temporary pavement version". Further, although the example of using a steel deck is described here for convenience, the temporary pavement structure of the present invention may be a structure using a precast concrete deck or the like in addition to the steel deck. When using a precast concrete deck, it is advisable to embed a female-threaded insert in the surface of the deck in advance at the factory.

6A and 6B are cross-sectional views showing a temporary pavement structure 300 of the present invention, FIG. 6A is a cross-sectional view showing a temporary pavement structure 300 using a normal temporary pavement plate 210, and FIG. 6B is a boundary temporary pavement plate 220. It is sectional drawing which shows the temporary pavement structure 300 which was. Since the temporary pavement structure 300 shown in FIG. 6 (a) and the temporary pavement structure 300 shown in FIG. 6 (b) basically have the same structure, the following mainly refer to FIG. 6 (a). However, the temporary pavement structure 300 will be described.

As shown in FIG. 6, the temporary pavement structure 300 is a structure including a steel deck slab 100 and a normal temporary pavement slab 210 (boundary temporary pavement slab 220). More specifically, the normal temporary pavement slab 210 (boundary temporary pavement slab 220) is installed by placing the support leg 213 (boundary support leg 223) on the steel deck slab 100, and then the steel deck slab 100 and the steel deck slab 100 are provided by fixing bolts 310. The temporary pavement structure 300 is obtained by fixing the ordinary temporary pavement plate 210 (boundary temporary pavement plate 220). At this time, the fixing bolt 310 is inserted through the bolt hole 214 (boundary bolt hole 224), and the support plate 211 (boundary support plate 221) and the small bolt hole provided in the steel deck 100 are inserted. That is, after sewing the support plate 211 (boundary support plate 221) and the steel deck 100 with the fixing bolts 310, the ordinary temporary paving plate 210 (boundary temporary paving plate 220) is fixed to the steel deck 100. Further, as can be seen from FIG. 6, the steel deck 100 and the support plate 211 (boundary support plate 221) are vertically opposed to each other with the support leg 213 (boundary support leg 223) interposed therebetween, and as a result, the steel deck 100 A storage space is formed between the support plate 211 (boundary support plate 221) and the support leg 213 (boundary support leg 223).

As described above, the support leg 213 (boundary support leg 223) can be fixed to the lower surface side of the support plate 211 (boundary support plate 221) in advance, or is independent of the support plate 211 (boundary support plate 221). Therefore, the structure may be simply placed on the steel deck 100. Further, the support plate 211 fixed to the holding plate 211 (boundary support plate 221) and the support plate 211 independently placed on the steel deck 100 can also be used in combination. In any case, the support leg 213 (boundary support leg 223) has a structure fixed to the lower surface of the support leg 213 (boundary support leg 223) or a structure mounted on the steel deck 100. It will be "arranged" on the lower surface side of the support plate 211 (boundary support plate 221).

When the support plate 211 (boundary support plate 221) and the support leg 213 (boundary support leg 223) are separated, the support plate 211 (boundary support plate 221) can withstand a certain vertical load like a sleeper. Moreover, it is preferable that the member is an elastic member whose displacement amount is very small, and the bottom surface thereof is a surface having an appropriate friction coefficient. Further, a plurality of support legs 213 may be laminated in the vertical direction so that the height can be adjusted.

FIG. 7 is a cross-sectional view showing a situation in which the boundary temporary pavement slab 220 is installed at the connecting portion, and FIG. 7A is a cross-sectional view showing a state before the boundary temporary pavement slab 220 is installed on the steel deck 100. ) Is a cross-sectional view showing a state in which the boundary temporary pavement slab 220 is fixed to the steel deck slab 100. The procedure for installing the boundary temporary pavement plate 220 at the connecting portion will be described with reference to this figure.

First, as shown in FIG. 7A, the ordinary temporary pavement plate 210 is installed in the general portion set on both sides of the connecting portion. The ordinary temporary pavement plate 210 installed here is of the type in which the unpaved portion 215 shown in FIG. 3B is formed. When the ordinary temporary pavement plate 210 is installed, the boundary temporary pavement plate 220 is installed at the connecting portion as shown in FIG. 7 (b). At this time, the boundary support plate 221 of the boundary temporary paving plate 220 is installed so as to overlap the support plate 211 of the ordinary temporary paving plate 210 in the unpaved portion 215. Then, the boundary support plate 221 and the support plate 211 and the steel deck 100 are sewn and fixed by the fixing bolt 310 inserted through the boundary bolt hole 224.

As described above, since the splicing plates Sp are arranged on the upper and lower sides of the adjacent steel deck 100s and fixed by the splicing bolts Bt, the steel deck 100 at the connecting portion is fixed as shown in FIG. 7A. The head of the splicing plate Sp and the splicing bolt Bt is arranged on the upper part of the splicing plate Sp. Therefore, the head of the splicing bolt Bt becomes a barrier, and conventionally, the precast pavement plate cannot be installed at the connecting portion. On the other hand, according to the present invention, as shown in FIG. 7B, the boundary temporary pavement slab 220 installed at the connecting portion has a storage space formed between the boundary support plate 221 and the steel deck slab 100. As a result of accommodating the head of the splicing bolt Bt and the splicing plate Sp in this accommodating space, the boundary temporary pavement plate 220 can be easily installed at the connecting portion without these becoming barriers. Further, by forming the accommodation space, the temporary pavement at this portion can be omitted, and it is not necessary to remove the temporary pavement around the splicing bolt Bt at the time of the main pavement.

3. 3. Temporary Pavement Structure Construction Method Subsequently, the temporary pavement structure construction method of the present invention will be described. The method for constructing the temporary pavement structure of the present invention is a method for constructing the temporary pavement structure 300 described so far. Therefore, the invention of the present application avoids explanations that overlap with the contents described in the temporary pavement plate 200 and the temporary pavement structure 300. Only the contents peculiar to the temporary pavement structure construction method will be explained. That is, the contents not described here are the same as those described in "1. Temporary pavement version" and "2. Temporary pavement structure".

In the method for constructing the temporary pavement structure of the present invention, a case using the "standard boundary temporary pavement plate 220" shown in FIG. 5 (a) and a "unpaved boundary temporary pavement plate 220" shown in FIG. 5 (b) are used. It is roughly divided into the cases used. Therefore, each case will be described step by step below.

(Case using standard boundary temporary pavement plate)
FIG. 8 is a flow chart showing the flow of the main steps of the temporary pavement structure construction method using the standard boundary temporary pavement plate 220, and FIG. 9 is a temporary pavement structure construction using the standard boundary temporary pavement plate 220. It is a step diagram which shows the main process of a method.

First, as shown in FIG. 9A, adjacent steel decks 100 are fixed to each other with a splicing plate Sp and a splicing bolt Bt. Of course, this step is necessary when constructing a new bridge deck, and the step can be omitted when constructing the temporary pavement structure 300 with respect to the existing deck. Then, as shown in FIG. 9B, the ordinary temporary pavement plate 210 is installed in the general portion set on both sides of the connecting portion (Step 1), and the support plate 211 is connected to the support plate 211 by the fixing bolt 310 inserted through the bolt hole 214. The steel deck is sewn and fixed (Step 2). The ordinary temporary pavement plate 210 installed here is of the type in which the unpaved portion 215 shown in FIG. 3B is formed. The steel deck 100 can be installed on the ordinary temporary pavement plate 210 in advance at the factory, and in this case, the installation step (Step 1) of the ordinary temporary pavement plate 210 can be omitted.

When the ordinary temporary pavement plate 210 is installed, the boundary temporary pavement plate 220 is installed at the connecting portion as shown in FIG. 9 (c) (Step 3). At this time, the boundary support plate 221 of the boundary temporary paving plate 220 is installed so as to overlap the support plate 211 of the normal temporary paving plate 210 in the unpaved portion 215. Then, the boundary support plate 221 and the support plate 211 and the steel deck 100 are sewn and fixed by the fixing bolt 310 inserted through the boundary bolt hole 224 (Step 4). When the ordinary temporary pavement slab 210 and the boundary temporary pavement slab 220 are fixed at predetermined positions on the steel deck 100, the temporary pavement structure 300 is constructed, and as shown in FIG. 9C, the boundary support leg 223 is sandwiched between them. A storage space is formed between the boundary support plates 221 arranged vertically and vertically and the steel deck 100.

When the temporary pavement structure 300 is constructed and the traffic is opened for the scheduled period, the completed pavement (that is, the main pavement) is constructed. Specifically, the normal temporary pavement plate 210 and the boundary temporary pavement plate 220 are removed (Step 5) and returned to the original state (state of FIG. 9 (a)) as shown in FIG. 9 (d). As shown in FIG. 9 (e), the main pavement 400 is laid (Step 6).

By the way, due to aging and other reasons, construction work may be carried out to replace the existing concrete deck with a steel deck. In this case, the road width may be divided into two, and the first phase construction and the second phase construction may be performed in different periods (so-called "half-width construction"). Alternatively, even if the floor slab is renewed without dividing the road width (so-called "full width construction"), the construction should be carried out at night when the traffic is light and the traffic should be opened during the day when the traffic is heavy. There is. In this case, since the existing concrete deck and the new deck may be adjacent to each other during the construction, it is preferable to carry out the construction by the method described below. In the case of half-width construction, the boundary line between the existing floor slab and the new floor slab is in the direction of the bridge axis, while in the construction form such as nighttime construction daytime opening, the boundary line between the existing floor slab and the new floor slab is in the direction perpendicular to the bridge axis. It becomes. Of course, these forms can be combined for construction. FIG. 10 is a step diagram of performing half-width construction using the temporary pavement structure 300 of the present invention in order to replace the existing concrete deck with a steel deck. Hereinafter, half-width construction using the temporary pavement structure 300 will be described with reference to this figure.

First, the concrete deck on the width side (left side in the figure), which is the target of the first phase construction, is removed, and as shown in FIG. 10 (a), the ordinary temporary pavement slab 210 and the boundary temporary pavement slab 220 are installed. The boundary temporary pavement plate 220 installed here has a smaller width than the boundary temporary pavement plate 220 shown in FIG. 10 (c).

When the normal temporary pavement slab 210 and the boundary temporary pavement slab 220 are installed, the concrete floor slab Dc on the second phase construction side (right side in the figure) is removed while opening the traffic on the first phase construction side (left side in the figure). , A normal temporary pavement plate 210 will be installed in the general part on the second phase construction side. Of course, in the state shown in FIG. 10A, the existing floor slab and the new floor slab may be combined (that is, over the entire surface) to temporarily open the traffic.

When the ordinary temporary pavement slab 210 is installed in the general part of the first phase construction side and the second phase construction side, the boundary temporary pavement slab 220 shown in FIG. 10 (a) is removed, and then as shown in FIG. 10 (b). The adjacent steel decks 100 are connected and fixed to each other with a pavement plate Sp and a pavement bolt Bt.

When the adjacent steel deck 100s are connected and fixed to each other, as shown in FIG. 10 (c), a boundary temporary pavement slab 220 capable of covering the entire connecting portion is installed. Then, the traffic will be fully opened (full width) only for the scheduled period.

(Case using unpaved boundary temporary paved plate)
FIG. 11 is a flow chart showing the flow of the main steps of the temporary pavement structure construction method using the unpaved boundary temporary pavement plate 220, and FIG. 12 is the temporary pavement using the unpaved boundary temporary pavement plate 220. It is a step diagram which shows the main process of a structure construction method.

As shown in FIG. 12 (a), the ordinary temporary pavement plate 210 is installed in the general portion set on both sides of the connecting portion (Step 1), and the support plate 211 and the steel are provided by the fixing bolt 310 inserted through the bolt hole 214. The floor slab 100 is sewn and fixed (Step 2). The ordinary temporary pavement plate 210 installed here is of the type in which the unpaved portion 215 shown in FIG. 3B is formed. The steel deck 100 can be installed on the ordinary temporary pavement plate 210 in advance at the factory, and in this case, the installation step (Step 1) of the ordinary temporary pavement plate 210 can be omitted.

When the ordinary temporary pavement plate 210 is installed, the boundary temporary pavement plate 220 is installed at the connecting portion as shown in FIG. 12 (b) (Step 3). At this time, the boundary support plate 221 of the boundary temporary paving plate 220 is installed so as to overlap the support plate 211 of the normal temporary paving plate 210 in the unpaved portion 215. Then, the boundary support plate 221 and the support plate 211 and the steel deck 100 are sewn and fixed by the fixing bolt 310 inserted through the boundary bolt hole 224 (Step 4).

When the boundary temporary pavement plate 220 is fixed at the connecting portion, the boundary pavement portion 222 is laid on the boundary support plate 221 by on-site construction as shown in FIG. 12 (c) (Step 7). Since the standard boundary temporary pavement plate 220 is provided with the boundary pavement portion 222 from the time of shipment from the factory (or at the time of yard production), the post-paving process by on-site construction is not required. However, since the standard boundary pavement plate 220 is a complete precast product including the boundary pavement portion 222, it is difficult to adjust it when a step is formed on the surface with the adjacent ordinary temporary pavement plate 210. There is also. On the other hand, the unpaved boundary temporary paving slab 220 requires a post-paving process by on-site construction, but its adjustment is extremely high when a step is formed on the surface between the unpaved boundary temporary paving slab 210 and the adjacent ordinary temporary paving slab 210. It's easy. As described above, since the standard boundary temporary paving plate 220 and the unpaved boundary temporary paving plate 220 have their own characteristics, they may be appropriately selected according to the site to be used. For example, in a place where the existing floor slab and the new floor slab are adjacent to each other as shown in FIG. 10 (a), the unpaved boundary temporary paved slab 220 is used, and after the unpaved boundary temporary paved slab 220 is installed. It is good to pave.

When the normal temporary pavement slab 210 and the boundary temporary pavement slab 220 are installed at predetermined positions on the steel deck 100 and the boundary pavement portion 222 is laid by the post-paving process, the temporary pavement structure 300 is constructed and only for the planned period. Open the traffic. Then, when the traffic opening for the scheduled period is completed, the normal temporary pavement plate 210 and the boundary temporary pavement plate 220 are removed (Step 5), and the main pavement 400 is laid (Step 6).

The temporary pavement version, the temporary pavement structure, and the temporary pavement structure construction method of the present invention can be used for various road bridges such as a motorway and a general motorway. Further, as the temporary pavement structure and the temporary pavement structure construction method of the present invention, a steel deck, a precast concrete deck, or the like can be used. When using a precast concrete deck, if an insert with a female thread is embedded in the surface of the deck in advance at the factory, it can be joined with bolts, and the same construction as a steel deck can be performed. According to the invention of the present application, considering that it is possible to efficiently reinforce, reconstruct, and repair pavement of an in-service road bridge, which in turn leads to a longer life of the road bridge, it is not only industrially usable but also socially available. Can be said to be an invention that can be expected to make a great contribution.

100 Steel slab 100L Left steel slab 100R Right steel slab 200 Temporary pavement version 210 Normal temporary pavement version 211 (Normal temporary pavement version) Support plate 212 (Normal temporary pavement version) Pavement part 213 (Normal temporary pavement version) ) Support legs 214 (ordinary temporary pavement version) Bolt holes 215 (ordinary temporary pavement version) unpaved part 220 Boundary temporary pavement version 221 (boundary temporary pavement version) boundary support plate 222 (border temporary pavement version) boundary pavement Part 223 (for boundary temporary pavement) Boundary support leg 224 (for boundary temporary pavement) Boundary bolt hole 300 Temporary pavement structure 310 Fixing bolt 400 Main pavement Bt splicing bolt Dc Concrete floor slab Lb Predetermined width Sp splicing plate

Claims (8)

It is a temporary pavement slab that is installed on the deck of a bridge to run vehicles.
A boundary temporary pavement slab that is a portion where two adjacent decks are connected and is installed at a connecting portion set with a predetermined width from the adjacent boundary of the deck.
A normal temporary pavement slab installed in a general part of the floor slab excluding the connecting part is provided.
The ordinary temporary pavement plate has a thin-walled plate-shaped support plate, a pavement portion provided on the upper surface side of the support plate, and a plurality of support legs arranged on the lower surface side of the support plate.
The boundary temporary pavement plate includes a thin-walled plate-shaped boundary support plate, a boundary pavement portion provided on the upper surface side of the boundary support plate, and a plurality of boundary support legs arranged on the lower surface side of the boundary support plate. Have,
In the ordinary temporary pavement slab, an unpaved portion to which the paved portion is not provided is formed on a part of the upper surface of the support plate on the boundary temporary pavement slab side.
The support plate and the boundary support plate can be fixed to the deck by installing the support plate and the boundary support plate so as to overlap each other in the unpaved portion and sewing them with bolts.
Temporary paved version featuring that. It is a temporary pavement slab that is installed on the deck of a bridge to run vehicles.
A boundary temporary pavement slab that is a portion where two adjacent decks are connected and is installed at a connecting portion set with a predetermined width from the adjacent boundary of the deck.
A normal temporary pavement slab installed in a general part of the floor slab excluding the connecting part is provided.
The ordinary temporary pavement plate has a thin-walled plate-shaped support plate, a pavement portion provided on the upper surface side of the support plate, and a plurality of support legs arranged on the lower surface side of the support plate.
The boundary temporary pavement plate has a thin-walled plate-shaped boundary support plate and a plurality of boundary support legs arranged on the lower surface side of the boundary support plate.
In the ordinary temporary pavement slab, an unpaved portion to which the paved portion is not provided is formed on a part of the upper surface of the support plate on the boundary temporary pavement slab side.
The support plate and the boundary support plate can be fixed to the deck by installing the support plate and the boundary support plate so as to overlap each other in the unpaved portion and sewing them with bolts.
Temporary paved version featuring that. When the boundary temporary pavement slab is installed so as to straddle the two adjacent floor slabs, the bolts for connecting the two floor slabs between the floor slab and the boundary support plate by the boundary support legs A spare space that can accommodate the head is formed,
The temporary pavement version according to claim 1 or 2, wherein the temporary pavement version is characterized in that. It is a temporary pavement structure that allows vehicles to run on bridges.
The deck of the bridge and
A boundary temporary pavement slab that is a portion where two adjacent decks are connected and is installed at a connecting portion set with a predetermined width from the adjacent boundary of the deck.
A normal temporary pavement slab installed in a general part of the floor slab excluding the connecting part is provided.
The ordinary temporary pavement plate has a thin-walled plate-shaped support plate, a pavement portion provided on the upper surface side of the support plate, and a plurality of support legs arranged on the lower surface side of the support plate.
The boundary temporary pavement plate includes a thin-walled plate-shaped boundary support plate, a boundary pavement portion provided on the upper surface side of the boundary support plate, and a plurality of boundary support legs arranged on the lower surface side of the boundary support plate. Have,
The boundary temporary pavement slab is installed across two adjacent floor slabs.
Wherein together across the support legs and oppositely disposed the slab in the vertical and the support plate is sewn by a bolt, it arranged to face the upper and lower positions across the boundary support legs were the floor plate and the boundary support plate Is sewn with bolts
The boundary support legs form a margin space between the floor slab and the boundary support plate that can accommodate the heads of bolts for connecting the two floor slabs.
Temporary pavement structure characterized by this. In the ordinary temporary pavement slab, an unpaved portion to which the paved portion is not provided is formed on a part of the upper surface of the support plate on the boundary temporary pavement slab side.
The boundary temporary paving plate is installed so that the boundary support plate overlaps the support plate at the unpaved portion.
And the boundary support plate and the support plate and the floor plate is fixed sewn by bolts,
The temporary pavement structure according to claim 4, wherein the temporary pavement structure is characterized in that. It is a method of constructing a temporary pavement structure that allows vehicles to run on a bridge.
The temporary pavement structure is a portion where the deck of a bridge and two adjacent decks are connected, and the boundary temporary pavement is installed at a connecting portion set with a predetermined width from the adjacent boundary of the deck. And an ordinary temporary pavement slab installed in the general part of the floor slab excluding the connecting part .
The ordinary temporary pavement plate has a thin-walled plate-shaped support plate, a pavement portion provided on the upper surface side of the support plate, and a plurality of support legs arranged on the lower surface side of the support plate.
The boundary temporary pavement plate includes a thin-walled plate-shaped boundary support plate, a boundary pavement portion provided on the upper surface side of the boundary support plate, and a plurality of boundary support legs arranged on the lower surface side of the boundary support plate. Have,
Wherein as the slab across the support legs and said support plate is opposed to vertically, and ordinary temporary pavement installation step of installing the common temporary pavement,
Boundary temporary pavement installation in which the boundary temporary pavement slab is installed so that the floor slab and the boundary support plate face each other vertically and straddle two adjacent floor slabs across the boundary support leg. Process and
And said support plate and the floor plate by sewing by means of bolts, and ordinary temporary pavement fixing step of fixing the common temporary pavement in floor plate,
A boundary temporary pavement slab fixing step of fixing the boundary temporary pavement slab to the floor slab by sewing the floor slab and the boundary support plate with bolts is provided.
The boundary support legs form a margin space between the floor slab and the boundary support plate that can accommodate the heads of bolts for connecting the two floor slabs.
Temporary pavement structure construction method characterized by this. It is a method of constructing a temporary pavement structure that allows vehicles to run on a bridge.
The temporary pavement structure is a portion where the deck of a bridge and two adjacent decks are connected, and the boundary temporary pavement is installed at a connecting portion set with a predetermined width from the adjacent boundary of the deck. And an ordinary temporary pavement slab installed in the general part of the floor slab excluding the connecting part.
The ordinary temporary pavement plate has a thin-walled plate-shaped support plate, a pavement portion provided on the upper surface side of the support plate, and a plurality of support legs arranged on the lower surface side of the support plate.
The boundary temporary pavement plate has a thin-walled plate-shaped boundary support plate and a plurality of boundary support legs arranged on the lower surface side of the boundary support plate.
The ordinary temporary pavement slab installation step of installing the ordinary temporary pavement slab so that the floor slab and the support plate face each other vertically with the support legs sandwiched between them.
Boundary temporary pavement installation in which the boundary temporary pavement slab is installed so that the floor slab and the boundary support plate face each other vertically and straddle two adjacent floor slabs across the boundary support leg. Process and
The ordinary temporary pavement fixing step of fixing the ordinary temporary pavement plate to the floor slab by sewing the floor slab and the support plate with bolts.
A boundary temporary pavement fixing step of fixing the boundary temporary pavement plate to the floor slab by sewing the floor slab and the boundary support plate with bolts .
A post-paving step of forming a pavement portion on the upper part of the boundary support plate is provided.
The boundary support legs form a margin space between the floor slab and the boundary support plate that can accommodate the heads of bolts for connecting the two floor slabs.
Temporary pavement structure construction method characterized by this. The temporary pavement removal process for removing the temporary pavement and
Further provided with a main pavement process for performing main pavement on the floor slab.
The temporary pavement structure construction method according to claim 6 or 7, wherein the temporary pavement structure is constructed.

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