JP2019183505A - Temporary pavement slab, temporary pavement structure, and temporary pavement structure construction method - Google Patents

Abstract

To solve the problems in the prior art, namely, to provide a temporary pavement slab being light of weight and excellent in workability, a structure using the same, and a construction method for the structure; and to provide a temporary pavement slab, a structure using the same, and a construction method for the structure capable of securing a space for accommodating a bolt head at a connection part of a steel plate floor.SOLUTION: The temporary pavement slab of the present invention is installed on a floor system of a bridge, travels a vehicle, and which includes a support plate, a pavement part, and supporting legs. The support plate is a thin plate-like member. A pavement is provided on the upper face side of the support plate, and a plurality of supporting legs are fixed to the lower face side of the support plate. When the temporary pavement slab is installed on the floor system, an allowance space is formed between the floor system and the support plate by the support legs.SELECTED DRAWING: Figure 7

Description

  TECHNICAL FIELD The present invention relates to road pavement technology, and more specifically, relates to a temporary pavement plate that can be used as temporary pavement for passing a vehicle temporarily, a structure using the same, and a method for constructing the structure. It is.

  It has been pointed out that the construction infrastructure (hereinafter referred to as “construction infrastructure”) that has been intensively developed during the period of high economic growth has already undergone considerable deterioration. In 2014, the “Proposal for Full-scale Implementation of Road Aging Measures (Social Capital Development Council)” was compiled, giving examples of the Choshi Tunnel in 2012, “In the near future, human life and society such as the collapse of bridges, etc.” It will lead to a fatal situation related to the equipment, "he urged and emphasized the importance of maintaining 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 publication of the Showa 14th edition, and has been revised significantly, especially after the Hyogoken-Nanbu Earthquake. Yes. As a result, even in the case of a bridge that has been sufficiently proof in the past, the proof strength is often insufficient in light of the current design standards.

  Thus, for the two reasons of aging and lack of strength, reinforcement and reconstruction of bridges are often performed today. Even if the main structure of the bridge is healthy, paving work will be carried out when the pavement deteriorates. In particular, asphalt pavement, which is said to occupy about 90% of the roads in Japan, has a lifespan of 10 years. Considering the number of road bridges nationwide, the pavement work is frequently performed. On the other hand, the floor slab supporting the pavement is also deteriorated, and a floor slab renewal work for renewing a new floor slab in place of the deteriorated floor slab is being carried out in various places.

  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. Especially, viaducts on motorways such as expressways pass tens of thousands of cars a day, and if they are not allowed to pass, the economic loss will be immeasurable, and emergency patients will be lost. If it cannot be transported, it may become a social problem. For this reason, when construction is being performed on a road bridge that is in service, it is always necessary to open traffic early, and the contractor is making efforts to shorten the construction period in order to achieve early opening.

  By the way, even during construction, traffic may be partially and temporarily opened, for example, only on one side lane. In this case, it is common to lay a temporary pavement (hereinafter referred to as “temporary pavement”) rather than a completed pavement (hereinafter referred to as “main pavement”). Moreover, asphalt pavement is usually adopted as temporary pavement rather than concrete pavement because of the problem of the period required for construction. However, although it is not as much as concrete pavement construction, asphalt pavement construction also undergoes processes such as leveling, rolling, and curing (cooling), so it takes a considerable amount of time to complete the pavement. . For this reason, a technology that enables the construction of temporary pavements in a short period of time has been eagerly desired.

  In order to build a temporary pavement in a short period of time, it is conceivable to use a precast pavement plate. Various technologies related to precast pavement plates have been proposed so far. For example, in Patent Document 1, a technology using a precast concrete pavement plate, which is a pavement plate connection portion that can absorb expansion and contraction after use. is suggesting.

JP 04-120302 A

  Conventionally used precast pavement plates including the precast concrete pavement plate shown in Patent Document 1 have a problem that the weight is large, and it takes a lot of time for transportation work, installation work or removal work and is inferior in workability. . Furthermore, another problem can be pointed out when using precast paving slabs for steel slab bridges. Normally, adjacent steel floor slabs are connected by friction welding using high strength bolts using an attachment plate, so that a plurality of bolts are arranged at the connecting portion of the steel floor slabs. On the other hand, the precast paving slab will be placed directly on the steel slab, but there are bolts (especially the head) at the connecting part of the steel slab, and this will serve as a barrier to install the precast paving slab. I can't. Although it is conceivable to install the precast paving slab avoiding only the connecting part of the steel slab, in this case, a special structure must be provided in the connecting part (especially the bolt location) of the steel slab.

  An object of the present invention is to solve the problems of the prior art, that is, to provide a temporary paving plate that is lightweight and excellent in workability, a structure using the same, and a method for constructing the structure. . It is also an object of the present invention to provide a temporary paving slab that can secure a space for accommodating the bolt head at the connecting portion of the steel slab, a structure using the same, and a method for constructing the structure. One.

  The invention of the present application is to reduce the weight of the temporary paving plate by providing a pavement on a thin plate-like support plate, and below the support plate by providing support legs on the lower surface side of the support material. This is an invention made based on an idea that has not been found in the past.

  The temporary paving slab of the present invention is installed on a bridge floor slab to drive a vehicle, and includes a support plate, a paving portion, and support legs. The support plate is a thin plate member, a pavement 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. In addition, adjacent temporary paving plates can be connected by bolts.

  The temporary paving plate of the present invention may have a plurality of support legs fixed to the lower surface side of the support plate. In addition, as a means for fixing, a bolt, welding, or adhesive bonding can be applied. In this case, when the temporary paving slab is installed on the floor slab, a margin space is formed between the floor slab and the support plate by the support legs. When the bolt to be used is a steel slab, a stud bolt attached to the upper surface of the slab by stud welding can also be used. Moreover, a hole can be provided in a floor slab like a general volt | bolt, and it can also cooperate using a nut.

  The temporary pavement structure of the present invention is a structure for running a vehicle on a bridge, and includes a floor slab of the bridge and a temporary pavement installed on the floor slab.

  The temporary pavement structure of this invention can also be comprised further including the boundary temporary pavement plate installed in a connection part among floor slabs. Here, the connecting portion is a portion where two adjacent floor slabs are connected, and is an area set with a predetermined width from the adjacent boundary of the floor slab. The boundary temporary pavement plate has a thin plate-like 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 disposed on the lower surface side of the boundary support plate. It is. And a temporary paving plate is installed in the general part except a connection part among floor slabs, and one boundary temporary paving plate is installed ranging over two adjacent floor slabs. At this time, a marginal 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 paving structure of the present invention may include a temporary paving plate in which an unpaved portion (a portion where no paving portion is provided) is formed on a part of the upper surface of the support plate on the boundary temporary paving 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 with bolts.

  The temporary pavement structure construction method of the present invention is a method for constructing a temporary pavement structure in which a vehicle runs on a bridge, and is a method that includes a temporary pavement plate installation step and a temporary pavement plate fixing step. In the temporary paving plate installation process, the temporary paving plate is installed so that the floor plate and the support plate face each other with the support leg interposed therebetween. In the temporary paving plate fixing process, the temporary paving plate is fixed to the floor plate by sewing the floor plate and the support plate with bolts.

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

  The temporary pavement structure construction method of the present invention can be a method further comprising a boundary temporary pavement plate installation step and a boundary temporary pavement plate fixing step. In this case, the temporary paving structure includes a boundary temporary paving plate. In the boundary temporary paving plate installation step, the boundary temporary paving plate is installed such that the floor slab and the boundary support plate face each other with the boundary support legs therebetween. In the boundary temporary paving plate fixing step, the boundary temporary paving plate is fixed to the floor slab by sewing the floor slab and the boundary support plate with bolts. A marginal 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 construction method of the present invention can be a method further comprising a boundary temporary pavement plate installation step, a boundary temporary pavement plate fixing step, and a post-paving step. In this case, the temporary pavement structure includes a boundary temporary pavement plate, and the boundary temporary pavement plate is formed by a boundary support plate and boundary support legs (that is, no pavement is provided). In the post-paving process, a pavement is formed on the upper part of the boundary support plate. Also in this case, a marginal space is formed by the boundary support legs between the floor slab and the boundary support plate.

The temporary paving plate, temporary paving structure, and temporary paving structure construction method of the present invention have the following effects.
(1) Even when the existing structure and the new structure are mixed during construction such as floor slab renewal, it is possible to relatively easily open temporary traffic relatively easily.
(2) Since the temporary paving plate of the present invention is extremely lightweight, it can be easily handled. Therefore, the temporary paving structure of the present invention can be easily constructed by the temporary paving structure construction method of the present invention.
(3) By forming a “margin space” that accommodates the bolt head and the bolt shaft, a temporary pavement structure can be easily constructed even at the connecting portion of the steel deck.
(4) By using the temporary paving plate of the present invention, a housing space can be formed in the connecting portion where the joining bolt is present, so that the pavement work around the joining bolt can be omitted and the area around the joining bolt can be omitted. The main pavement can be performed efficiently without removing the temporary pavement.
(5) When performing the floor slab renewal construction within the limited construction time, if the temporary pavement plate is installed in advance on the floor slab, the temporary pavement installation time can be shortened. As a result, the work can be performed efficiently, and the construction amount of floor slab renewal can be increased.
(6) Even when pavement work cannot be performed in general, such as in rainy weather, it is possible to perform construction using a precast temporary pavement plate, thus leading to risk reduction for opening up traffic.
(7) By precasting the temporary pavement, the amount of pavement construction at the site can be reduced (or omitted), enabling rapid construction. In addition, the amount of equipment used for paving will decrease, and the site will become compact.
(8) If the dimensions of the temporary paving plates are the same, they can be reused many times, which is more economical than conventional.

(A) is a cross section which shows the steel deck slab connected with the volt | bolt and the attachment board, (b) is a top view which shows a connection part and a general part. (A) is sectional drawing which shows a normal temporary pavement plate and a boundary temporary pavement plate, (b) is a top view which shows a normal temporary pavement plate. (A) is sectional drawing which shows the detail of an ordinary temporary paving plate, (b) is sectional drawing which shows the ordinary temporary paving plate in which the unpaved part was formed. Sectional drawing which shows the normal temporary paving plate by which the planar or columnar support leg is arrange | positioned at the lower surface side of the support plate. (A) is sectional drawing which shows the boundary temporary pavement plate in which the boundary pavement part was provided in the upper surface of the boundary support plate, (b) is sectional drawing which shows the boundary temporary pavement plate whose upper surface of a boundary support plate is unpaved. (A) is sectional drawing which shows the temporary pavement structure using a normal temporary pavement plate, (b) is sectional drawing which shows the temporary pavement structure using a boundary temporary pavement plate. (A) is sectional drawing which shows the state before installing a boundary temporary paving plate in a steel floor slab, (b) is sectional drawing which shows the state which fixed the boundary temporary paving plate to the steel floor slab. The flowchart which shows the flow of the main processes of the temporary pavement structure construction method using a standard boundary temporary pavement version. The step figure which shows the main processes of the temporary pavement structure construction method using the standard boundary temporary pavement version. The step figure which performs half-width construction using the temporary pavement structure of this invention in order to replace the existing concrete floor slab with a steel floor slab. The flowchart which shows the flow of the main processes of the temporary paving structure construction method using the unpaved boundary temporary paving plate. The step figure which shows the main processes of the temporary paving structure construction method using the unpaved boundary temporary paving plate.

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

1. Temporary Paving Plate First, the temporary paving plate of the present invention will be described. The temporary paving slab of the present invention is installed on a bridge slab (especially a steel slab or a precast concrete slab). It is roughly divided into those installed in the range excluding the part (hereinafter referred to as “general part”). First, the “connecting portion” will be described with reference to FIG. Here, for the sake of convenience, the temporary paving plate installed in the "connecting part" is called "boundary temporary paving plate", and the temporary paving plate installed in the "general part" is called "ordinary temporary paving plate" And The thickness (vertical dimension) of the temporary paving plate is set to about 50 mm to 100 mm as in the case of conventional paving, and may be set to match the existing paving height. In addition, here, for the sake of convenience, the example of installation on a steel slab is described, but the temporary paving plate of the present invention may be installed on a precast concrete floor slab in addition to a steel floor slab. it can.

(Connecting part and general part)
When forming a bridge slab using a steel slab, a plurality of steel slabs are arranged in a plane, and these steel slabs are connected to construct an entire floor slab. As described above, adjacent steel decks and steel decks (between steel decks) are not on-site welding, as shown in Fig. 1 (a). It is common to connect by friction welding by. In FIG. 1 (a), the left steel slab 100L and the right steel slab 100R are adjacent to each other, and upper and lower attachment plates Sp are arranged so as to be laid over the two steel slabs 100. The left steel slab 100L and the right steel slab 100R are connected to each other by sewing and fixing the attachment plate Sp with a plurality of attachment bolts Bt. Although it depends on the size of the bridge (the size of the bridge surface) and the size of the steel deck slab 100 to be used, it is usually adjacent in both the bridge axis direction and the bridge axis perpendicular direction as shown in FIG. The steel decks 100 are connected to each other.

  The “connecting portion” is a region set in a portion where adjacent steel decks 100 are connected as shown in FIG. Specifically, a predetermined width Lb is provided for each steel deck 100 from a boundary line (hereinafter referred to as “adjacent boundary”) generated between two adjacent steel decks 100 (that is, set back). ) The obtained region is a connecting part. Moreover, the range except a connection part is the "general part" among the steel deck 100, and the six steel deck 100 are arrange | positioned in FIG.1 (b), and the general part is set in six places. And the temporary paving plate installed in the general part is “ordinary temporary paving plate”, and the temporary paving plate installed in the connecting part is “boundary temporary paving plate”.

  Hereafter, it demonstrates in detail for every main element which comprises the temporary paving plate of this invention.

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

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

  The pavement 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. The pavement 212 can be formed by concrete pavement, but asphalt pavement that can be formed with a thin layer (for example, 40 mm) is more suitable for weight reduction. When forming the pavement part 212 by asphalt pavement, various materials such as dense-graded asphalt concrete and coarse-graded asphalt concrete can be used, and drainage pavement and water-permeable pavement can also be employed.

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

  The ordinary temporary paving plate 210 is fixed to the steel deck 100 by bolts as will be described later. Therefore, the pavement 212 is provided with a bolt hole 214 for inserting a bolt. The support plate 211 is also provided with a small hole at a position where the bolt hole 214 is provided to insert the bolt. Thereby, when the ordinary temporary pavement plate 210 is installed on the steel deck 100, the bolt can be inserted from the bolt hole 214 to reach the steel deck 100. Accordingly, the bolt hole 214 is naturally not paved.

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

  The support leg 213 may be a thin plate-like member, and may also serve as a reinforcing rib (for example, a steel plate such as a flat steel) that reinforces the support plate 211. The support plate 211 may be a plate-like member, a rod-like member such as a reinforcing bar or a bolt, or a columnar or planar member such as a sleeper as shown in FIG. A thin plate-like member and a columnar member such as a sleeper (for example, a rectangular parallelepiped member) can be used in combination. The material of the support plate 211 can be steel, resin, wood, or the like. In particular, in the case of a columnar shape or a planar shape, a resin or wooden support leg 213 may be used for weight reduction.

  The support leg 213 can be fixed to the lower surface of the support plate 211, or the support leg 213 and the support plate 211 can be used separately. For example, when a thin plate-like member or a rod-like member (such as a reinforcing bar or a bolt) 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 designed as appropriate according to the member to be used, such as separate (may be fixed).

  When the support plate 211 and the support leg 213 are separated from each other, the support leg 213 may be an elastic member that can resist a certain amount of vertical load like a sleeper and has a minute displacement. Further, the horizontal load acting on the support leg 213 is resisted by a 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 that the surface has a friction coefficient. Furthermore, if a predetermined frictional force can be obtained between the floor slab and the support leg 213 and between the support leg 213 and the support slab 213, the plurality of support legs 213 can be stacked in the vertical direction. In this case, the height can be easily adjusted, which is preferable.

(Boundary temporary paving version)
FIG. 5 is a cross-sectional view showing a boundary temporary pavement plate 220 of the temporary pavement plate 200, and FIG. 5A is a cross-sectional view showing a boundary temporary pavement plate in which a boundary pavement portion 222 is provided on the upper surface of the boundary support plate 221. (B) is a sectional view showing a boundary temporary paving plate in which the upper surface of the boundary support plate 221 is unpaved. Here, for the sake of convenience, the boundary temporary pavement plate 220 shown in FIG. 5A is particularly referred to as “standard boundary temporary pavement plate 220”, and the boundary temporary pavement plate 220 shown in FIG. The boundary temporary paving plate 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, a standard boundary temporary pavement plate 220 includes a boundary support plate 221, a boundary pavement 222, and boundary support legs 223. The structure is the same as that of the ordinary temporary paving plate 210 shown in FIG. Each member constituting the boundary temporary paving plate 220 is given a “boundary” to distinguish it from the ordinary temporary paving plate 210, but the boundary support plate 221 is the support plate 211 described in the normal paving portion 210. The boundary pavement 222 is the same as the pavement 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 plate 220 is installed on the steel floor slab 100, an accommodation space is formed between the boundary support plate 221 and the steel floor slab 100.

  As shown in FIG. 5B, the unpaved boundary temporary pavement plate 220 is provided with a boundary support plate 221 and boundary support legs 223, like the standard boundary temporary pavement plate 220. However, unlike the standard boundary temporary pavement plate 220, the boundary pavement 222 is omitted. For example, the pavement height of an adjacent existing RC floor slab may have changed from the beginning of construction. In this case, if this unpaved boundary temporary pavement plate 220 is used, the temporary pavement can be constructed on the site according to the height of the existing structure. The pavement surface of the existing RC floor slab and the normal temporary pavement plate 210 As a result of smoothing without a step, 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 boundary support legs 223 of the unpaved boundary support 223 and the boundary support legs 223 of the standard boundary temporary paving plate 220 are the same (that is, the same as the support legs 213 of the ordinary temporary paving plate). In other words, an unpaved boundary temporary paving plate 220 is obtained by removing the boundary paving portion 222 from the standard boundary temporary paving plate 220.

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, the description overlapping the contents described in the temporary pavement plate 200 is avoided, and the temporary pavement structure of the present invention is avoided. Only the contents specific to will be explained. That is, the contents not described here are the same as those described in “1. Temporary paving plate”. In addition, here, for the sake of convenience, an example using a steel deck is described, but 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 floor slab, it is advisable to embed an insert with an internal thread cut into the surface of the floor slab in advance at the factory.

  FIG. 6 is a cross-sectional view showing a temporary pavement structure 300 according to 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. It is sectional drawing which shows the temporary paving structure 300. Since the temporary pavement structure 300 shown in FIG. 6 (a) and the temporary pavement structure 300 shown in FIG. 6 (b) are basically the same structure, the following mainly refers 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 floor slab 100 and a normal temporary pavement plate 210 (boundary temporary pavement plate 220). More specifically, the ordinary temporary pavement plate 210 (boundary temporary pavement plate 220) is installed by placing the support legs 213 (boundary support legs 223) on the steel floor slab 100. A temporary paving structure 300 is obtained by fixing an ordinary temporary paving plate 210 (boundary temporary paving plate 220). At this time, the fixing bolt 310 is inserted using the bolt hole 214 (boundary bolt hole 224), and the small holes for bolts provided in the support plate 211 (boundary support plate 221) and the steel deck slab 100 are further inserted. That is, after the support plate 211 (boundary support plate 221) and the steel floor slab 100 are sewn with the fixing bolt 310, the ordinary temporary paving plate 210 (boundary temporary paving plate 220) is fixed to the steel floor slab 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 a support plate 211 (boundary support plate 221), a support space is formed by support legs 213 (boundary support legs 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 independent of the support plate 211 (boundary support plate 221). And it can also be set as the structure mounted on the steel deck 100 simply. Moreover, the support plate 211 fixed to the holding plate 211 (boundary support plate 221) and the support plate 211 that is independently placed on the steel deck 100 can be used in combination. It should be noted that the support leg 213 (boundary support leg 223) is either the structure fixed to the lower surface of the support leg 213 (boundary support leg 223) or the structure placed 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 resist a certain amount of vertical load like a sleeper. In addition, it is preferable that the elastic member has a small displacement amount and the bottom surface thereof is a surface having an appropriate friction coefficient. In addition, a plurality of support legs 213 may be stacked 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 plate 220 is installed at the connecting portion, and (a) is a cross-sectional view showing a state before the boundary temporary pavement plate 220 is installed on the steel deck 100, ) Is a cross-sectional view showing a state in which the boundary temporary pavement plate 220 is fixed to the steel deck 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 to Fig.7 (a), the ordinary temporary pavement plate 210 is installed in the general part set on the both sides of the connection part. The ordinary temporary paving plate 210 installed here is of a type in which an unpaved portion 215 shown in FIG. 3B is formed. When the ordinary temporary paving plate 210 is installed, the boundary temporary paving plate 220 is installed at the connecting portion as shown in FIG. 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. The boundary support plate 221, 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, the adjacent steel floor slabs 100 are arranged so that the contact plates Sp are arranged on the upper and lower sides and fixed with the contact bolts Bt. Therefore, as shown in FIG. In the upper part, the heads of the attachment plate Sp and the attachment bolt Bt are arranged. Therefore, the head of the contact bolt Bt or the like becomes a barrier, and it has been impossible to install a precast paving plate at the connecting portion. On the other hand, according to the present invention, as shown in FIG. 7 (b), the boundary temporary pavement plate 220 installed in the connecting portion has an accommodation space formed between the boundary support plate 221 and the steel deck 100, As a result of accommodating the head of the attachment bolt Bt and the attachment plate Sp in this accommodation space, the boundary temporary paving plate 220 can be easily installed at the connecting portion without becoming a barrier. Further, since the accommodation space is formed, temporary pavement at this portion can be omitted, and it is not necessary to remove the temporary pavement around the attachment bolt Bt at the time of the main pavement.

3. Next, the temporary pavement structure construction method of the present invention will be described. The temporary pavement structure construction method of the present invention is a method of constructing the temporary pavement structure 300 described so far, and therefore, the description overlapping with the contents described in the temporary pavement plate 200 and the temporary pavement structure 300 is avoided. 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 paving plate” and “2. Temporary paving structure”.

  The temporary paving structure construction method of the present invention includes a case using a “standard boundary temporary paving plate 220” shown in FIG. 5 (a) and an “unpaved boundary temporary paving plate 220” shown in FIG. 5 (b). It is roughly divided into the cases used. Therefore, each case will be described below in order.

(Case using standard boundary temporary paving plate)
FIG. 8 is a flowchart showing the flow of the main steps of the temporary paving structure construction method using the standard boundary temporary paving plate 220, and FIG. 9 is the temporary paving structure construction using the standard boundary temporary paving plate 220. It is a step figure showing the main processes of a method.

  First, as shown in FIG. 9A, adjacent steel slabs 100 are fixed with a splice plate Sp and a spur bolt Bt. Of course, this step is necessary when a bridge deck is newly constructed, and when the temporary pavement structure 300 is constructed with respect to the existing floor slab, this step can be omitted. Then, as shown in FIG. 9B, the ordinary temporary paving plate 210 is installed in the general part set on both sides of the connecting part (Step 1), and the fixing plate 310 inserted through the bolt hole 214 and the support plate 211 The steel floor slab is sewn and fixed (Step 2). The ordinary temporary paving plate 210 installed here is of a type in which an unpaved portion 215 shown in FIG. 3B is formed. In addition, the steel floor slab 100 can also be previously installed in the ordinary temporary paving plate 210 at the factory, and in this case, the installation step (Step 1) of the ordinary temporary paving plate 210 can be omitted.

  When the ordinary temporary pavement plate 210 is installed, as shown in FIG. 9C, the boundary temporary pavement plate 220 is installed at the connecting portion (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 ordinary temporary paving plate 210 in the unpaved portion 215. Then, the boundary support plate 221, the support plate 211, and the steel deck 100 are sewn and fixed by the fixing bolt 310 inserted from the boundary bolt hole 224 (Step 4). When the ordinary temporary pavement plate 210 and the boundary temporary pavement plate 220 are respectively fixed at predetermined positions on the steel floor slab 100, a temporary pavement structure 300 is constructed. As shown in FIG. 9C, the boundary support legs 223 are sandwiched therebetween. An accommodation space is formed between the boundary support plate 221 and the steel deck 100 that are opposed to each other in the vertical direction.

  When the temporary pavement structure 300 is constructed and traffic is released only for a scheduled period, a completed pavement (that is, main pavement) is performed. Specifically, the ordinary temporary paving plate 210 and the boundary temporary paving plate 220 are removed (Step 5), and after returning to the original state (the state of FIG. 9A) as shown in FIG. 9D, The main pavement 400 is laid as shown in FIG. 9 (e) (Step 6).

  By the way, there is a case where an existing concrete slab is replaced with a steel slab for reasons such as aging. 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”). Or, even for floor slab renewal construction that does not divide the width of the road (so-called “full width construction”), the construction form should be such that construction is performed at night when traffic volume is low and traffic is opened during daytime when traffic volume is high. There is. In this case, the existing concrete floor slab and the newly installed floor slab are adjacent to each other during the construction. Therefore, the construction is preferably performed 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, whereas in the construction mode such as nighttime construction, the boundary line between the existing floor slab and the new floor slab is perpendicular to the bridge axis. It becomes. Of course, it can also be constructed by combining these forms. FIG. 10 is a step diagram in which half-width construction is performed using the temporary pavement structure 300 of the present invention in order to replace an existing concrete floor slab with a steel floor slab. Hereinafter, the half-width construction using the temporary pavement structure 300 will be described with reference to this figure.

  First, the concrete floor slab on the width side (left side in the figure) to be subjected to the first phase construction is removed, and the ordinary temporary paving plate 210 and the boundary temporary paving plate 220 are installed as shown in FIG. The boundary temporary paving plate 220 installed here has a smaller width than the boundary temporary paving plate 220 shown in FIG.

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

  When the ordinary temporary pavement plate 210 is installed in the general part of the first phase construction side and the second phase construction side, the boundary temporary pavement plate 220 shown in FIG. 10 (a) is removed and then as shown in FIG. 10 (b). Next, the adjacent steel floor slabs 100 are connected and fixed together with the splicing plate Sp and the splicing bolt Bt.

  When the adjacent steel floor slabs 100 are connected and fixed, as shown in FIG. 10C, a boundary temporary pavement plate 220 that can cover the entire connecting portion is installed. Then, the entire traffic (full width) is opened only for the scheduled period.

(Case using unpaved border temporary paving version)
FIG. 11 is a flowchart showing the flow of the main steps of the temporary paving structure construction method using the unpaved boundary temporary paving plate 220, and FIG. 12 shows the temporary paving using the unpaved boundary temporary paving plate 220. It is a step figure showing the main processes of a structure construction method.

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

  When the ordinary temporary pavement plate 210 is installed, as shown in FIG. 12B, the boundary temporary pavement plate 220 is installed at the connecting portion (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 ordinary temporary paving plate 210 in the unpaved portion 215. Then, the boundary support plate 221, the support plate 211, and the steel deck 100 are sewn and fixed by the fixing bolt 310 inserted from the boundary bolt hole 224 (Step 4).

  When the boundary temporary pavement plate 220 is fixed at the connecting portion, as shown in FIG. 12C, the boundary pavement portion 222 is laid on the boundary support plate 221 by on-site construction (Step 7). The standard boundary temporary pavement plate 220 is provided with the boundary pavement portion 222 from the time of factory shipment (or at the time of yard production), and therefore does not require a post-paving process by on-site construction. However, since the standard boundary temporary pavement plate 220 is a complete precast product including the boundary pavement part 222, it is difficult to adjust when there is a step on the surface between the adjacent normal temporary pavement plate 210. There is also. On the other hand, the unpaved boundary temporary paving plate 220 requires a post-paving process by on-site construction, but its adjustment is extremely possible when there is a step on the surface with the adjacent ordinary temporary paving plate 210. Easy. Thus, the standard boundary temporary pavement plate 220 and the unpaved boundary temporary pavement plate 220 have features, respectively, and may be appropriately selected according to the site to be used. For example, in an area where the existing floor slab and the new floor slab are adjacent to each other as shown in FIG. 10A, the unpaved boundary temporary paving plate 220 is used, and after the unpaved boundary temporary paving plate 220 is installed. It is good to pave.

  When a normal temporary pavement plate 210 and a boundary temporary pavement plate 220 are respectively installed at predetermined positions on the steel floor slab 100, and the boundary pavement part 222 is laid by a post-paving process, the temporary pavement structure 300 is constructed, and only during the scheduled period Open up traffic. Then, when the opening of traffic for the scheduled period ends, the ordinary 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 plate, the temporary pavement structure, and the temporary pavement structure construction method of the present invention can be used for various road bridges such as an automobile road and a general automobile road. Moreover, the temporary pavement structure and temporary pavement structure construction method of this invention can use a steel floor slab or a precast concrete floor slab. In addition, when using a precast concrete slab, if an insert with a female thread cut is embedded in the surface of the slab at the factory in advance, joining with bolts is possible, and construction similar to a steel slab can be performed. According to the present invention, it is possible to efficiently reinforce and renovate road bridges in service and renovate pavements, and in turn lead to longer life of road bridges. It can be said that the invention can be expected to make a great contribution.

100 Steel Floor Plate 100L Left Steel Floor Plate 100R Right Steel Floor Plate 200 Temporary Pavement Plate 210 Normal Temporary Pavement Plate 211 (Normal Temporary Paving Plate) Support Plate 212 (Normal Temporary Paving Plate) Pavement 213 (Normal Temporary Paving Plate) ) Support leg 214 Bolt hole (for ordinary temporary paving plate) 215 Unpaved part (for ordinary temporary paving plate) 220 Boundary temporary paving plate 221 Boundary supporting plate (for boundary temporary paving plate) 222 Boundary paving (for boundary temporary paving plate) 223 Boundary support leg 224 (of the boundary temporary paving plate) Boundary bolt hole (of the boundary temporary paving plate) 300 Temporary pavement structure 310 Fixed bolt 400 Pavement Bt Joint bolt Dc Concrete floor slab Lb Predetermined width Sp Joint plate

Claims (9)

It is a temporary paving plate that is installed on the floor slab of the bridge and runs the vehicle,
A thin plate-like support plate;
A pavement provided on the upper surface side of the support plate;
A support leg provided on the lower surface side of the support plate,
The temporary paving plates arranged adjacent to each other can be connected by bolts,
Temporary pavement version characterized by that. It is a temporary paving plate that is installed on the floor slab of the bridge and runs the vehicle,
A thin plate-like support plate;
A pavement provided on the upper surface side of the support plate;
A plurality of support legs fixed to the lower surface side of the support plate,
When installed on the floor slab, a marginal space is formed between the floor slab and the support plate by the support legs.
Temporary pavement version characterized by that. It is a temporary pavement structure that drives a vehicle on a bridge,
A bridge slab,
A temporary paving plate installed on the floor slab,
The temporary paving plate has a thin plate-like support plate, a paving 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 floor slab and the support plate, which are opposed to each other up and down across the support legs, are sewn and fixed by bolts.
Temporary pavement structure characterized by that. A boundary temporary pavement plate installed at a connecting portion of the floor slab, further comprising:
The connecting portion is a portion where two adjacent floor slabs are connected, and is an area set with a predetermined width from an adjacent boundary of the floor slab,
The boundary temporary pavement plate is a thin plate-like boundary support plate, a boundary pavement portion provided on the upper surface side of the boundary support plate, a plurality of boundary support legs disposed on the lower surface side of the boundary support plate, Have
The temporary paving slab is installed in a general part of the floor slab excluding the connecting part,
The boundary temporary paving plate is installed across two adjacent floor slabs,
A marginal space is formed between the floor slab and the boundary support plate by the boundary support legs so as to accommodate heads of bolts for connecting the two floor slabs.
The temporary pavement structure according to claim 3. In the temporary paving plate, a non-paved portion in which the paving portion is not provided is formed on a part of the support plate upper surface on the boundary temporary paving plate side,
The boundary temporary paving plate is installed such that the boundary support plate overlaps the support plate at the unpaved portion,
The boundary support plate, the support plate, and the floor slab are fixed by sewing with bolts.
The temporary pavement structure according to claim 4. A method for constructing a temporary pavement structure for driving a vehicle on a bridge,
The temporary paving structure has a bridge floor slab and a temporary paving slab,
The temporary paving plate has a thin plate-like support plate, a paving 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,
A temporary paving plate installation step of installing the temporary paving plate so that the floor plate and the support plate face each other with the support leg interposed therebetween;
Temporary paving plate fixing step of fixing the temporary paving plate to the floor slab by sewing the floor plate and the support plate with bolts;
A temporary pavement structure construction method characterized by comprising: A temporary paving plate removal step of removing the temporary paving plate;
A main paving process for performing main paving on the floor slab;
The temporary pavement structure construction method according to claim 6, further comprising: The temporary pavement structure further includes a boundary temporary pavement plate installed at a connecting portion of the floor slab,
The connecting portion is a portion where two adjacent floor slabs are connected, and is an area set with a predetermined width from an adjacent boundary of the floor slab,
The boundary temporary pavement plate is a thin plate-like boundary support plate, a boundary pavement portion provided on the upper surface side of the boundary support plate, a plurality of boundary support legs disposed on the lower surface side of the boundary support plate, Have
A boundary temporary paving plate installation step of installing the boundary temporary paving plate so that the floor slab and the boundary support plate face each other across the boundary support legs;
A boundary temporary pavement plate fixing step of fixing the boundary temporary pavement plate to the floor slab by sewing the floor slab and the boundary support plate with a bolt; and
The temporary paving slab is installed in a general part of the floor slab excluding the connecting part,
The boundary temporary paving plate is installed across two adjacent floor slabs,
A marginal space is formed between the floor slab and the boundary support plate by the boundary support legs so as to accommodate heads of bolts for connecting the two floor slabs.
The temporary pavement structure construction method according to claim 6 or 7, characterized in that. The temporary pavement structure further includes a boundary temporary pavement plate installed at a connecting portion of the floor slab,
The connecting portion is a portion where two adjacent floor slabs are connected, and is an area set with a predetermined width from an adjacent boundary of the floor slab,
The boundary temporary paving plate has a thin plate-like boundary support plate and a plurality of boundary support legs arranged on the lower surface side of the boundary support plate,
A boundary temporary paving plate installation step of installing the boundary temporary paving plate so that the floor slab and the boundary support plate face each other across the boundary support legs;
Boundary temporary paving plate fixing step of fixing the boundary temporary paving plate to the floor slab by sewing the floor slab and the boundary support plate with bolts;
Further comprising a post-paving step of forming a pavement on the boundary support plate,
The temporary paving slab is installed in a general part of the floor slab excluding the connecting part,
The boundary temporary paving plate is installed across two adjacent floor slabs,
A marginal space is formed between the floor slab and the boundary support plate by the boundary support legs so as to accommodate heads of bolts for connecting the two floor slabs.
The temporary pavement structure construction method according to claim 6 or 7, characterized in that.

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