Bridge protection blocks and bridge structures

Abstract

To easily establish a drainage function and to enable smooth and sufficient drainage. [SOLUTION] A ground cover G is constructed by being installed in a series along the bridge axis direction on the side edge 2 in the bridge width direction of the deck 1 on which the pavement P of a bridge K is laid, and is provided with a recess 10 covering the upper surface 3 and side surface 4 of the side edge 2 of the deck 1, has an inlet 21 on the pavement P side through which rainwater from the surface flows in, and has a drainage channel 20 formed inside for draining the rainwater from this inlet 21 outside the bridge. The drainage channel 20 is configured to have an inlet that opens facing the side end face of the pavement P and receives rainwater from the pavement side.

Description

[Technical field]

[0001] The present invention relates to concrete bridge guard blocks that are installed along the side edges of bridges, and to bridge structures constructed using these bridge guard blocks. [Background technology]

[0002] Conventionally, as shown in Fig. 16, this type of bridge ground cover block Ba is made of concrete, with a plurality of blocks connected in series along the bridge axis direction at the side edge 2 in the bridge width direction of the deck 1 on which the pavement P of the bridge is laid, forming a ground cover Ga, and with a recess 100 covering the upper surface 3 and side surface 4 of the side edge 2 of the deck 1. A bridge structure KSa using this ground cover block is formed by connecting a plurality of the bridge ground cover blocks Ba in series along the bridge axis direction at the side edge 2 in the bridge width direction of the deck 1 to form the ground cover Ga, and laying the pavement P on the deck 1. The ground cover block Ba is fixed to the deck 1, for example, using an anchor 101 (see, for example, Japanese Utility Model Publication No. 3-55619 and Japanese Patent Application Laid-Open No. 2002-146721). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Publication No. 3-55619 [Patent Document 2] JP 2002-146721 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the bridge structure KSa using the conventional ground cover blocks Ba, there was a problem that rainwater and the like that fell on the pavement P could not be smoothly drained. For this reason, drainage was attempted by providing gaps between adjacent ground cover blocks Ba and draining the water through these gaps, or by attaching separate drainage pipes to the inside of the ground cover blocks Ba, but this makes construction more cumbersome. The present invention has been made in consideration of the above-mentioned problems, and aims to provide a bridge cover block and bridge structure that allows drainage function to be easily constructed and enables drainage to be carried out smoothly and sufficiently. [Means for solving the problem]

[0005] In order to achieve the above-mentioned object, the present invention provides a concrete bridge guard block that is provided with a recess that covers the upper and side surfaces of the side edge of a deck on which a pavement of a bridge is laid, and is provided with a plurality of blocks that are connected together along the bridge axis direction to form a guard block. The bridge has an inlet on the pavement side through which rainwater from the surface of the pavement flows in, and a drainage channel is formed inside to allow the rainwater from the inlet to flow out of the bridge.

[0006] As a result, when constructing a bridge, assuming that the deck consists of, for example, a main body and a surface portion formed by pouring adjusted concrete on the surface of this main body, a number of these bridge guard blocks are installed in a row along the axial direction of the bridge on the side edges of the main body of the deck in the bridge width direction to form a guard. The guard blocks are glued and fixed to the deck with mortar or the like, or are fixed to the deck with anchor bolts or fastening metal fittings. At this time, a drainage point is provided on the bridge to allow rainwater to flow outside the bridge, and the guard blocks are installed so that their drainage channels are connected to the drainage point. Then, for example, adjusted concrete is poured into the main body of the deck to form the surface portion, and a paving portion such as asphalt or concrete is applied to this surface portion. Prevent Laying through a water sheet.

[0007] In this case, the installation of the ground cover blocks forms a drainage channel in the pavement, which requires fewer parts and is easier to install than when a separate drainage pipe is installed, making it easier to establish a drainage function. In a bridge structure constructed in this way, rainwater on the surface of the pavement can flow out of the bridge through the drainage channel from the inlet. This allows for smooth and sufficient drainage. However, there is no problem with installing a separate drainage pipe to increase the drainage capacity.

[0008] If necessary, the drainage channel is configured with an inlet that opens facing the side end face of the pavement and receives rainwater from the pavement side. As a result, when a bridge is constructed, in the above example, the side end face of the pavement faces the inlet. As a result, some rainwater will infiltrate into the pavement, but this rainwater will be received by the inlet from the side end face of the pavement, especially from the underside of the pavement, and flow into the drainage channel. As a result, rainwater inside the pavement can also be drained, making drainage even smoother and more sufficient. In particular, when the pavement is installed via a waterproof sheet, rainwater flowing down the waterproof sheet can be reliably received by the inlet, improving drainage efficiency.

[0009] In this configuration, it is effective that at least the inlet of the inflow and the inlet is opened continuously between a pair of end faces perpendicular to the bridge axis direction. A plurality of inflow and outflow ports can be provided at required intervals along the bridge axis direction, but if they are opened continuously between a pair of end faces perpendicular to the bridge axis direction, these openings will be long along the bridge axis direction, so that rainwater will flow in evenly, making it easier to deal with a large amount of rainwater. In particular, in this configuration, at least the inlet is opened continuously between a pair of end faces perpendicular to the bridge axis direction, so it is possible to ensure that rainwater inside the pavement is also drained evenly. In particular, when the pavement is provided via a waterproof sheet, rainwater flowing along the waterproof sheet can be reliably received by the inlet, improving drainage efficiency.

[0010] More specifically, the bridge ground covering block of the present invention is configured as necessary to have an upper side surface, a lower side surface, an inner elevation having a covering surface covering the side end surface of the pavement and an exposed surface that is continuous with the covering surface and protrudes above the surface of the pavement, an outer elevation surface opposite the inner elevation surface, a pair of end surfaces perpendicular to the bridge axis direction, a bottom surface that constitutes the recess and abuts against and covers the upper surface of the side edge portion of the deck slab, and an inner side surface that forms the recess and abuts against and covers the side surface of the side edge portion of the deck slab, The drainage channel is configured to include an inlet opening on the exposed surface of the inner elevation, an inlet opening on the covered surface of the inner elevation, and a flow outlet opening on the end surface through which rainwater flows from the inlet and the inlet.

[0011] As a result, when constructing a bridge, in the above example, adjustment concrete is poured into the main body of the deck to form a surface portion, and the surface of this surface portion is set so that it is flush with the lower edge of the receiving inlet. Also, it is advisable to lay the pavement portion so that the surface on the inlet side is flush with the lower edge of the inlet. In this configuration, the drainage channel's circulation port is opened at the end face, so it can be connected to the circulation port of another ground cover block installed adjacent in the bridge axis direction, allowing rainwater to flow along the bridge axis direction.

[0012] If necessary, the flow outlets are formed on each of the pair of end faces, and the drainage channel is configured to include a main channel that has the flow outlets at both ends and runs along the bridge axis direction, an inlet channel that runs from the inlet to the main channel, and a water conduit that runs from the receiving inlet to the main channel, and the flow outlet of the main channel of the drainage channel is connected to the flow outlet of the main channel of another ground protection block that is located adjacent in the bridge axis direction, thereby configuring it as an intermediate ground protection block that allows rainwater to flow along the bridge axis direction.

[0013] As a result, by connecting the intermediate ground cover blocks, a long drainage channel can be provided in the direction of the bridge axis, and rainwater can be drained by flowing into the intermediate ground cover blocks.For example, a drainage point can be provided at the end of the bridge to allow rainwater to flow outside the bridge, and the water can be drained from there.

[0014] In addition, if necessary, the flow outlets are formed on each of the pair of end faces, and an outlet port is formed on the outer elevation side to allow rainwater to flow outside the bridge, and the drainage channel is configured to include a main channel along the bridge axis direction having the flow outlets at both ends, an inlet channel from the inlet to the main channel, a water conduit from the receiving inlet to the main channel, and an outlet channel from the main channel to the outlet, and the flow outlet of the main channel of the drainage channel is connected to the flow outlet of the main channel of another ground cover block located adjacent in the bridge axis direction, thereby configuring it as a discharge ground cover block that allows rainwater to flow along the bridge axis direction and allows rainwater to flow to the outside from the outlet.

[0015] As a result, for example, the above-mentioned intermediate ground cover block and the discharge ground cover block can be combined and connected to form a ground cover. For example, discharge ground cover blocks are arranged at both ends of the bridge in the bridge axis direction, and intermediate ground cover blocks are arranged in series between the discharge ground cover blocks (see Fig. 13(a)). That is, the outlet of the discharge ground cover block can be configured as a discharge point and installed on both ends of the bridge. In this case, the flow port located on the outermost side of the main road of the discharge ground cover block can be blocked with concrete before or after construction. Therefore, rainwater can flow along the bridge axis through the drainage channel of the intermediate ground cover block, and the rainwater can flow out from the outlet of the discharge ground cover block to the outside. Also, if the discharge ground cover block is installed halfway along the bridge axis direction, rainwater can flow out from the outlet of the discharge ground cover block to the outside in the middle of the bridge (see Fig. 13(b)). The design freedom increases.

[0016] In this case, one of the outlets at both ends of the main passage can be blocked. This blocking of the outlet can be done before or after construction. As mentioned above, this is effective when disposing a discharge ground cover block at the end of the bridge in the bridge axis direction (see Figure 13).

[0017] Furthermore, as necessary, the receiving inlet is provided with a main inlet of the required size and a sub-inlet having a lower edge continuous with the lower edge of the main inlet and having a vertical width smaller than that of the main inlet, the main inlets and sub-inlets are alternately connected along the bridge axis direction, and the water conduit is configured to include main passages provided corresponding to each main inlet and leading to the main passage, and groove-shaped sub-passages communicating with each sub-inlet and communicating with the main passage. Since the vertical width of the sub-opening is smaller than that of the main opening, the paved area can be securely held down by the wall surface between the main openings.

[0018] In order to achieve the above object, the bridge structure of the present invention provides a bridge structure in which a plurality of concrete bridge guard blocks are arranged in series along the bridge axis direction to cover the upper and side surfaces of the side edge of the deck in the bridge width direction, and a paved section is provided on the deck. Prevent In a bridge structure constructed by laying a water sheet through the bridge, the bridge ground cover block is used to form a ground cover. The same effects and advantages as those described above are achieved.

[0019] In this configuration, it is effective that the pavement is laid on the deck via a waterproof sheet, and a strip of elastite that holds down the pavement is attached above the waterproof sheet on the covering surface including the inlet opening on the inner elevation. The presence of elastite prevents asphalt from getting into the inlet when laying the pavement, and the inlet opening can be secured. In addition, because the elastite is attached above the waterproof sheet, rainwater that runs down the waterproof sheet can be more reliably received by the inlet, improving drainage efficiency in this respect as well.

[0020] In addition, the bridge structure of the present invention is a bridge structure in which a plurality of concrete bridge ground cover blocks are arranged in series along the bridge axis direction to cover the upper and side surfaces of the side edge of the deck in the bridge width direction, and a paved section is provided on the deck. Prevent In a bridge structure constructed by laying a water sheet, It is advantageous to form a gate by combining and connecting the intermediate gate block and the discharge gate block. This allows for a variety of locations for draining rainwater outside the bridge by combining relay ground protection blocks and discharge ground protection blocks, thereby increasing design freedom. Effect of the Invention

[0021] According to the present invention, in a bridge, a drainage channel is formed in the pavement by constructing a ground cover block, so the number of parts is reduced and construction is easy compared to the case of providing a separate drainage pipe, and therefore the drainage function can be easily constructed. In a bridge structure constructed in this way, rainwater on the surface of the pavement can flow out of the bridge through the drainage channel from the inlet, so that drainage can be performed smoothly and sufficiently. In addition, if the bridge is configured with an inlet that opens facing the side end face of the pavement to receive rainwater, rainwater inside the pavement can also be drained, so that drainage can be performed even more smoothly and sufficiently. In particular, if the pavement is installed via a waterproof sheet, rainwater flowing down the waterproof sheet can be reliably received at the inlet, so that drainage efficiency can be improved. [Brief description of the drawings]

[0022] [Figure 1] 1 is a diagram showing an example of a bridge ground covering block according to an embodiment of the present invention and a bridge structure constructed using the same; [Diagram 2] 1 is an oblique view showing a bridge protection block, which is a relay protection block, in accordance with an embodiment of the present invention; [Diagram 3] 1 is a front view showing a bridge cross-section block, which is an intermediate cross-section block, according to an embodiment of the present invention. [Figure 4] 4 is a cross-sectional view taken along line AA in FIG. 3, showing a bridge barrier block, which is an intermediate barrier block, according to an embodiment of the present invention. [Diagram 5] 4 is a cross-sectional view taken along line BB in FIG. 3, showing a bridge grade protection block according to an embodiment of the present invention, which is an intermediate grade protection block. [Figure 6]1 is a partially cross-sectional oblique view showing a discharge ground cover block, which is a bridge ground cover block according to an embodiment of the present invention. [Figure 7] 1 is a front view showing a discharge gate block, which is a bridge gate block according to an embodiment of the present invention. [Figure 8] 8 is a cross-sectional view taken along line EE in FIG. 7, showing a discharge gate block, which is a bridge gate block according to an embodiment of the present invention. [Figure 9] FIG. 4 is an end view corresponding to line CC in FIG. 3 showing a bridge structure using a relay block (discharge block) which is a bridge barrier block according to an embodiment of the present invention. [Figure 10] FIG. 4 is an end view corresponding to line DD in FIG. 3 showing a bridge structure using a relay block (discharge block) which is a bridge barrier block according to an embodiment of the present invention. [Figure 11] FIG. 8 is an end view corresponding to line FF in FIG. 7 showing a bridge ground covering block according to an embodiment of the present invention, which is a discharge ground covering block, and a bridge structure using the same. [Figure 12] FIG. 11 is an enlarged end view of a main part of FIG. [Figure 13] 1A and 1B are diagrams showing examples of combinations of ground cover blocks according to an embodiment of the present invention. [Figure 14] 8 showing a modified example of the ground cover block according to the embodiment of the present invention. FIG. [Figure 15] 1A and 1B are perspective views showing another example of a ground cover block according to an embodiment of the present invention. [Figure 16] FIG. 1 is a cross-sectional view showing an example of a conventional bridge ground covering block and a bridge structure using the same. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, a bridge ground covering block and a bridge structure according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The same components as those described above will be denoted by the same reference numerals. As shown in Figures 1 to 13, the bridge guard block B according to the embodiment is made of concrete and is installed in a row along the bridge axis direction on the side edge 2 in the bridge width direction of the deck 1 on which the pavement P of the bridge K is laid via a waterproof sheet S to form a guard G. As shown in Figures 1, 9 to 12, the deck 1 is made of a main body 1a and a surface portion 1b formed by pouring adjustment concrete on the surface between the guards G on the left and right sides of the main body 1a. In Figure 1, the symbol R indicates a parapet installed on the guard.

[0024] The bridge ground covering block B in the embodiment of the present invention is provided in two types: an intermediate ground covering block B(T) shown in Figures 2 to 5, 9, 10 and 12, and a discharge ground covering block B(H) shown in Figures 6 to 12. First, the common configuration between the relay block B(T) and the discharge block B(H) will be described. These ground covering blocks B are configured with a recess 10 covering the upper surface 3 and side surface 4 of the side edge 2 of the main body 1a of the deck slab 1, and are configured to have an upper surface 11, a lower surface 12, an inner elevation 13 having a covered surface 13a covering the side end surface Pa of the paving portion P and an exposed surface 13b that is continuous with the covered surface 13a and protrudes above the surface of the paving portion P, an outer elevation 14 opposite the inner elevation 13, a pair of end surfaces 15 perpendicular to the bridge axis direction, a bottom surface 16 that forms the recess 10 and abuts against and covers the upper surface 3 of the side edge 2 of the deck slab 1, and an inner surface 17 that forms the recess 10 and abuts against and covers the side surface 4 of the side edge 2 of the deck slab 1.

[0025] Moreover, these ground covering blocks B have a rectangular inlet 21 that opens on the exposed surface 13b of the inner elevation 13 and through which rainwater from the surface of the pavement P flows in, as well as a circulation port 22 that opens on the end face 15 and through which rainwater flows from the inlet 21, and a drainage channel 20 is formed for discharging the rainwater through the circulation port 22 to the outside of the bridge K. Furthermore, the drainage channel 20 is configured with an inlet 23 that opens on the covered surface 13a of the inner elevation 13 and receives rainwater from the inside of the pavement P.

[0026] The inlet 21 is formed in a rectangular shape of a required size, and multiple (three in this embodiment) inlets are provided at required intervals along the bridge axis direction. The receiving inlet 23 opens continuously across a pair of end faces 15 perpendicular to the bridge axis direction. The receiving inlet 23 is provided so that its opening position is below the inlet 21.

[0027] In detail, the flow ports 22 are formed at symmetrical positions on the pair of end faces 15, and the drainage channel 20 is configured to include a main channel 25 having flow ports 22 at both ends and extending along the bridge axis direction, an inflow channel 26 leading from the inlet 21 to the main channel 25, and a water conduit 24 leading from the receiving port 23 to the main channel 25. The inflow channel 26 leading to the main channel 25 is provided for each inlet 21. This allows the flow port 22 of the main channel 25 of the drainage channel 20 to communicate with the flow port 22 of the main channel 25 of another ground cover block B provided adjacently in the bridge axis direction, allowing rainwater to flow along the bridge axis direction and to be led to a discharge point (in the embodiment, the later-described outflow port 30 of the discharge ground cover block B (H)).

[0028] The receiving port 23 is configured with a main port 23a of a required size and a sub-port 23b having a lower edge that is continuous with the lower edge of the main port 23a and a vertical width smaller than that of the main port 23a. A plurality of main ports 23a (four in the embodiment) are provided at required intervals along the bridge axis direction, and the main ports 23a and the sub-ports 23b are alternately provided along the bridge axis direction. The inlet 21 and the main port 23a are alternately provided in the bridge axis direction. The headrace 24 is configured with main passages 24a provided corresponding to each main port 23a and leading to the main passage 25, and groove-shaped sub-passages 24b that communicate with each sub-port 23b and communicate with the main passage 24a.

[0029] As shown in Figs. 6 to 8, the discharge ground cover block B(H) has an outlet 30 for discharging rainwater outside the bridge K at the center of the bridge axis direction on the outer elevation 14 side. In the embodiment, the outlet 30 is formed in a rectangular bulge 31 protruding from the outer elevation 14. In the discharge ground cover block B(H), the drainage channel 20 is composed of a main channel 25 having a circulation port 22 at both ends along the bridge axis direction, an inflow channel 26 from the inlet 21 to the main channel 25, a headrace channel 24 from the inlet 23 to the main channel 25, and an outflow channel 32 from the main channel 25 to the outlet 30. The lower surfaces of the outlet 30 and the outlet channel 32 are located lower than the lower surfaces of the inlet 21 and the inlet channel 26, and are formed to be at the same level as the lower surfaces of the inlet 23 and the headrace channel 24.

[0030] Furthermore, each covering block B has a plurality of bolt insertion holes 40 (four in this embodiment) formed at required intervals, penetrating between the upper surface 11 and the bottom surface 16, through which anchor bolts 41 for fixing to the deck 1 are inserted. As shown in Fig. 10, mounting holes 42 corresponding to the bolt insertion holes 40 are formed in the side edge portion 2 of the deck slab 1, and the anchor bolts 41 are inserted into the bolt insertion holes 40 and the mounting holes 42 and secured with nuts 43.

[0031] In the embodiment, the size of each cover block B is set to, for example, 1000 mm in length in the bridge axis direction, 600 mm in width between the inner elevation 13 and the outer elevation 14, and 520 mm in height between the upper side 11 and the lower side 12. In addition, the inlet 21 is set to 100 mm long x 120 mm wide, the main port 23a of the receiving port 23 is set to 50 mm long x 50 mm wide, the vertical width of the sub-port 23b of the receiving port 23 is set to 10 mm, the flow port 22 is set to 170 mm long x 100 mm wide, and the outlet 30 is set to 100 mm long x 120 mm wide. The dimensions of each part are not limited to these, and can be determined as appropriate.

[0032] Next, a bridge structure KS according to an embodiment will be described. As shown in Figures 1, 9 to 13, this bridge structure KS is constructed by forming a ground cover G by consecutively installing a plurality of concrete bridge ground cover blocks B along the bridge axis direction on both side edges 2 in the bridge width direction of the main body 1a of the deck 1, covering the upper surface 3 and side surface 4 of the main body 1a, pouring adjustment concrete between the left and right ground covers G on the surface of the main body 1a to form the surface portion 1b of the deck 1, and laying a pavement portion P of asphalt, concrete, or the like on the surface of the surface portion 1b via a waterproof sheet S.

[0033] In the embodiment, the intermediate guardrail block B(T) and the discharge guardrail block B(H) are combined and connected to form the guardrail G. As shown in Fig. 13(a), for example, the discharge guardrail block B(H) is arranged at both ends of the bridge axis direction of the bridge K, and the intermediate guardrail block B(T) is arranged between the discharge guardrail blocks B(H). That is, the outlet 30 of the discharge guardrail block B(H) is configured as a discharge point for discharging rainwater outside the bridge K. In this case, the flow outlet located at the outermost side of the main passage of the discharge guardrail block B(H) may be blocked with a blind material 60 made of concrete before or after construction.

[0034] These ground covering blocks B are fixed to the deck 1 by anchor bolts 41. The anchor bolts 41 are inserted into the bolt insertion holes 40 and the mounting holes 42 and tightened with nuts 43 to fix these ground covering blocks B to the deck 1. Joint material can be appropriately interposed between the joints between the ground covering blocks B.

[0035] In addition, the surface portion 1b of the deck 1 formed by pouring the adjusted concrete is provided so that its surface is flush with the lower edge side of the receiving port 23 (see FIG. 12). A waterproof sheet S and a pavement P are laid on top of this. The lower surface of the waterproof sheet S is made to face the sub-port 23b of the receiving port 23. As shown in FIG. 9, FIG. 11 and FIG. 12, in the embodiment, a strip-shaped elastite 50 that holds down the pavement P is attached to the covering surface 13a including the opening of the receiving port 23 on the inner elevation 13 of the ground cover block B, above the waterproof sheet S. The pavement P is laid so that the surface on the inlet 21 side is flush with the lower edge side of the inlet 21. Since the vertical width of the sub-port 23b from top to bottom is smaller than the vertical width of the main port 23a, the pavement P can be securely held down by the wall surface between the main ports 23a. A parapet R (FIG. 1) is provided on the ground cover G.

[0036] Next, a construction example of constructing the bridge structure KS according to the present embodiment will be described. This is a construction example when repairing a bridge K equipped with a guardrail formed integrally with the deck. First, the existing balustrade is removed from the guardrail and the guardrail is removed from the deck (S1). Next, the concrete constituting the pavement and the surface of the deck is removed to form the main body 1a of the deck 1 (S2). Also, the water pipe is removed (S3). Then, the base material of the main body 1a of the deck 1 is adjusted. In particular, the upper surface 3 and the side surface 4 of the side edge portion 2 in the bridge width direction are shaped (S4). In this state, the necessary relay guardrail block B(T) and discharge guardrail block B(H) are transported (S5), and these are sequentially installed at the required locations of the side edge portion 2 of the main body 1a of the deck 1 and fixed with anchor bolts 41 (S6). Then, the adjusted concrete is poured into the main body 1a of the deck 1 to form the surface portion 1b (S7). Thereafter, a waterproof sheet S is laid on the surface of the surface portion 1b of the deck 1, and a strip of elastite 50 is attached to the covering surface 13a of the ground cover block B above the waterproof sheet S, and the pavement portion P is constructed with asphalt or concrete (S8). In addition, a parapet R (Figure 1) is provided on the ground cover G.

[0037] In this case, when laying the pavement P, the presence of the elastite 50 prevents asphalt or the like from entering the receiving port 23, and the opening of the receiving port 23 can be secured. Furthermore, by constructing the ground cover block B, the drainage channel 20 of the pavement P is formed, which requires fewer parts and is easier to construct than when a separate drainage pipe is provided, making it easier to establish a drainage function. It is acceptable to provide a separate drainage pipe to increase the drainage capacity. Furthermore, the ground cover block B is fixed to the deck slab 1 with anchor bolts 41, ensuring a secure fixation.

[0038] In the bridge structure KS constructed in this way, rainwater on the surface of the pavement P flows from the inlet 21 through the drainage channel 20 and is discharged from the outlet 30 of the discharge ground cover block B(H), which is the discharge point, to the outside of the bridge K. This allows for smooth and sufficient drainage. As shown in Figs. 9 to 12, the side end face Pa of the pavement P faces the receiving port 23, so that although some rainwater penetrates into the inside of the pavement P, this rainwater is received by the receiving port 23 from the side end face Pa of the pavement P, mainly from the underside of the pavement P, and flows into the drainage channel 20 through the water conduit 24. This allows for the rainwater inside the pavement P to be discharged, so that drainage can be performed even more smoothly and sufficiently. This makes it easier to deal with a large amount of rainwater.

[0039] In particular, because the elastite 50 is attached above the waterproof sheet S, rainwater flowing down the waterproof sheet S can be more reliably received by the inlet 23, which also improves drainage efficiency. Also, in the inlet 23, the main inlet 23a and the sub-inlet 23b are continuously open across a pair of end faces 15 perpendicular to the bridge axis direction, which ensures that rainwater inside the pavement P is evenly drained. In particular, as shown in Fig. 12, when the pavement P is provided via the waterproof sheet S, rainwater flowing down the waterproof sheet S can be reliably received by the inlet 23, which improves drainage efficiency.

[0040] Furthermore, in this structure, as shown in Figure 13(a), a discharge ground cover block B(H) with a discharge point (outlet 30 of the discharge ground cover block B(H)) that drains rainwater outside the bridge K is provided at the end of the bridge K, and an intermediate ground cover block B(T) is connected between them, so that a drainage channel 20 can be provided long in the bridge axis direction, and rainwater can be flowed into the intermediate ground cover block B(T) and drained from the end of the bridge K.

[0041] Figure 13(b) shows another example of a combination of a relay ground cover block B(T) and a discharge ground cover block B(H). This shows a case where the discharge ground cover block B(H) is provided midway along the bridge axis of a bridge K. In the middle of the bridge K, rainwater can be discharged to the outside from the outlet 30 of the discharge ground cover block B(H).

[0042] Figure 14 shows another example of a discharge ground cover block B(H) among the bridge ground cover blocks B according to the embodiment of the present invention. In this discharge ground cover block B(H), the flow port 22 is formed on one of a pair of end faces 15, and the other flow port 22 is blocked and blinded in advance from the manufacturing stage. In this type, if two types of discharge ground cover blocks B(H) in which the end faces 15 forming the flow port 22 are formed in different mirror symmetries are prepared in advance, they can be used as the discharge ground cover blocks B(H) to be provided at both ends in the bridge axis direction of the bridge K shown in Figure 13(a).

[0043] FIG. 15 shows an intermediate guard block B(T) as a guard block B for bridges according to another embodiment. The intermediate guard block B(T) shown in FIG. 15(a) has an inlet 23 open continuously with the same size between a pair of end faces perpendicular to the bridge axis direction, and the headrace 24 is formed as a single plate-shaped space formed between the inlet 23 and the main channel 25. The discharge guard block B(H) can be formed in the same way. The intermediate guard block B(T) shown in FIG. 15(b) has both the inlet 21 and the inlet 23 open continuously with the same size between a pair of end faces 15 perpendicular to the bridge axis direction. The inlet channel 26 leading to the main channel 25 and the headrace 24 on the main channel 25 side are branched into multiple parts and communicate with the main channel 25. The discharge guard block B(H) can be formed in the same way. This also provides the same action and effect as above.

[0044] In the above embodiment, the discharge point of rainwater provided on the bridge K is configured by providing a discharge ground cover block B(H) and its outlet 30, but this is not necessarily limited to this. For example, a discharge-only ground cover block may be provided that does not have an inlet 21 and an inlet 23, and has only a drainage channel 20 having a circulation port 22 at the end face 15 and an outlet 30 at the outer elevation 14, and any appropriate modification may be made. Also, it goes without saying that the various cover blocks B may be combined in any way. Furthermore, in the above embodiment, in the discharge ground cover block B(H), the outlet 30 is provided on the outer elevation 14, but this is not necessarily limited to this. It may be provided on the lower surface 12, and any appropriate modification may be made.

[0045] Furthermore, in the above-mentioned embodiment, the overall size and shape, the number and size of the inlets 21 and the receiving inlets 23, and other dimensions of each part are not limited to those described above, and can of course be determined as appropriate. In addition, in the bridge structure according to the above-mentioned embodiment, an example is shown in which the present invention is applied to repairing an existing bridge, but the present invention is not necessarily limited to this, and can of course be applied to newly built bridges. The present invention is not limited to the above-mentioned embodiment, and those skilled in the art can easily make many modifications to these exemplary embodiments without substantially departing from the novel teachings and effects of the present invention, and these many modifications are included in the scope of the present invention. [Explanation of symbols]

[0046] B Bridge ground cover block B(T) Transit block B(H) Discharge ground cover block K Bridge G ground cover R high railing KS bridge structure 1 floor slab 1a Main unit 1b Surface part 2 Side edges 3 Top surface 4. Aspects P pavement section Pa side end face S. Waterproof Sheet 10 Recess 11 Top side 12 Lower side 13 Inside elevation 13a Covered surface 13b Exposed surface 14 External elevation 15 End face 16 Bottom 17 Inner surface 20 Drainage Channel 21 Inlet 22 Distribution port 23 Inlet 23a Main Entrance 23b Sub-exit 24 Waterway 24a Main Road 24b Sub-Route 25 Main road 26 Inflow channel 30 Outlet 31 Bulge 32 Outflow channel 40 Bolt insertion hole 41 Anchor bolt 42 Mounting hole 43 Nut 50 Elastite 60 Blind Material

Claims

1. A concrete bridge guard block is provided with a recess that covers the top and sides of the side edge of a deck on which a bridge pavement is laid, and is provided with a plurality of blocks arranged in series along the bridge axis to form a guard block for the bridge. The bridge has an inlet on the pavement side through which rainwater from the surface of the pavement flows in, and a drainage channel is formed inside to drain the rainwater from the inlet out of the bridge, The drainage channel is configured to have an inlet opening facing a side end surface of the pavement and receiving rainwater from the pavement side, A bridge ground covering block characterized in that at least the receiving port of the inlet and the receiving port is opened continuously across a pair of end faces perpendicular to the bridge axis direction.

2. the bridge has an upper side, a lower side, an inner elevation having a covering surface covering the side end surface of the pavement and an exposed surface continuous with the covering surface and protruding above the surface of the pavement, an outer elevation opposite the inner elevation, a pair of end surfaces perpendicular to the bridge axis direction, a bottom surface which constitutes the recess and abuts against and covers the upper surface of the side edge portion of the deck slab, and an inner side surface which forms the recess and abuts against and covers the side surface of the side edge portion of the deck slab, The bridge ground covering block as described in claim 1, characterized in that the drainage channel is configured with an inlet opening on the exposed surface of the inner elevation, an inlet opening on the covered surface of the inner elevation, and a flow outlet opening on the end surface through which rainwater flows from the inlet and the inlet.

3. The bridge covering block as described in claim 2, characterized in that the flow outlets are formed on each of the pair of end faces, the drainage channel is configured as a main channel along the bridge axis direction having the flow outlets at both ends, an inlet channel from the inlet to the main channel, and a water conduit from the receiving inlet to the main channel, and the flow outlet of the main channel of the drainage channel is connected to the flow outlet of the main channel of another covering block located adjacent in the bridge axis direction, thereby allowing rainwater to flow along the bridge axis direction.

4. A bridge ground cover block as described in claim 2, characterized in that the flow ports are formed on each of the pair of end faces, and an outflow outlet is formed on the outer elevation side to allow rainwater to flow outside the bridge, the drainage channel is configured as a main channel along the bridge axis direction having the flow ports at both ends, an inflow channel from the inlet to the main channel, a water conduit from the receiving port to the main channel, and an outflow channel from the main channel to the outflow outlet, and the flow port of the main channel of the drainage channel is connected to the flow port of the main channel of another ground cover block provided adjacent in the bridge axis direction, allowing rainwater to flow along the bridge axis direction and allowing rainwater to flow to the outside from the outflow outlet.

5. 5. The bridge ground covering block according to claim 4, wherein either one of the circulation ports at both ends of the main road is blocked.

6. The bridge ground covering block according to claim 3 or 4, characterized in that the receiving opening comprises a main opening of a required size and a sub-opening having a lower edge continuous with the lower edge of the main opening and having a vertical width smaller than that of the main opening, the main openings and the sub-openings are alternately connected along the bridge axis direction, and the water conduit comprises main passages provided corresponding to each main opening and leading to the main passage, and groove-shaped sub-passages communicating with each sub-opening and communicating with the main passage.

7. A bridge structure in which a concrete bridge guard block is installed in a row along the bridge axis direction to cover the top and sides of the side edge of the deck in the bridge width direction to form a guard, and a pavement is laid on the deck via a waterproof sheet. A bridge structure, comprising a bridge guard structure formed using the bridge guard structure block according to any one of claims 1 to 5.

8. The bridge structure described in claim 7, characterized in that the pavement is laid on the deck via a waterproof sheet, and a strip of elastite is attached to the covering surface including the receiving entrance opening on the inner elevation of the bridge ground covering block, above the waterproof sheet, to hold down the pavement.

9. A bridge structure in which a concrete bridge guard block is installed in a row along the bridge axis direction to cover the top and sides of the side edge of the deck in the bridge width direction to form a guard, and a pavement is laid on the deck via a waterproof sheet.

6. A bridge structure comprising a bridge cover formed by combining and connecting the intermediate block as claimed in claim 3 and the discharge block as claimed in claim 4 or 5.

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