JP2018188906A - Protective structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protective structure in which a main girder and a floor slab are separately installed, which allows a reduction in the number of support pillars compared with conventional structures, and which has a good appearance.SOLUTION: A protective structure includes: a plurality of pairs of juxtaposed support pillars; a main girder constructed over the pair of support pillars; and a floor slab constructed over the adjacent main girders. The number of support pillars can be reduced and the interval between the adjacent support pillars widened compared to conventional structures by providing the main girder and the floor slab separately.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a protective structure such as a cover-type shelter or shed that protects roads and railway tracks from wind and snow.

  Conventionally, for example, a protective structure disclosed in Patent Document 1 is known as a means for protecting roads, railway tracks, and the like from falling rocks. The main girder of this protective structure is formed in a T-shape in cross section and is installed on the upper part of the support column and the upper part of the retaining wall.

  Usually, this main girder is a so-called precast member manufactured in a factory, and therefore needs to be transported to the construction site of the protective structure. In general, vehicles such as trucks and trailers are used to transport the main girder. Therefore, the upper limit of the main girder size is determined by the size of the vehicle carrying the main girder. Vehicles such as trucks and trailers are stipulated to have a width of 2.5 m or less by various laws such as the Road Traffic Act in Japan. It needs to be about 2.5m.

  On the other hand, as disclosed in Patent Document 1, the distance between the support column and the retaining wall needs to be longer than 2.5 m in order to secure the width of the road or the like. Therefore, the main girder inevitably has a longitudinal direction in the width direction of the road or the like, and a short direction in a direction substantially parallel to the longitudinal direction of the road or the like.

JP 2005-336837 A

  When the length of the main girder in the short direction is about 2.5 m, the distance between the columns for placing the main girder is also about 2.5 m, the distance between adjacent columns is narrow, and the outside is seen from the inside of the protective structure. At that time, there was a problem that the support column narrowed the field of view and the scenery was lowered.

  Moreover, since the space | interval of a support | pillar is narrow, since the number of the support | pillars to install increases, there also existed a problem that the manufacturing cost of a protection structure became high.

  Then, this invention reduces the number of support | pillars compared with the former, and it aims at providing the protective structure with a favorable landscape property.

  The protective structure according to the invention of claim 1 includes a plurality of juxtaposed struts, a main girder built on top of the pair of struts, and a floor slab built on top of the adjacent main girder. The main girder and the floor slab are provided separately.

  The protection structure according to the second aspect of the invention includes a plurality of support columns arranged in parallel, a wall body facing the support columns, a main girder erected on the support column and an upper portion of the wall body, and the adjacent main girder A floor slab installed on the top of the main spar, wherein the main girder and the floor slab are provided separately.

  The protective structure according to the invention described in claim 3 is characterized in that the floor slab is a precast member.

  The protective structure according to the invention described in claim 4 is characterized in that the interval between the adjacent struts is 3 m or more.

  The protective structure according to the invention described in claim 5 is characterized in that a protective fence is provided on the support column.

  The protection structure according to the invention described in claim 6 is characterized in that the protection fence is provided so that the area of the opening between the columns adjacent to each other can be changed.

  According to invention of Claim 1, compared with the past, the number of installation of a support | pillar can be reduced and the landscape property from the inside of a protective structure can be improved. Moreover, the manufacturing cost of a protection structure can be reduced by reducing the number of installation of support | pillars.

  According to invention of Claim 2, compared with the past, the number of installation of a support | pillar can be reduced and the landscape property from the inside of a protective structure can be improved. Moreover, the manufacturing cost of a protection structure can be reduced by reducing the number of installation of support | pillars.

  According to invention of Claim 3, since a floor slab is manufactured in a factory beforehand, manufacturing cost can be reduced.

  According to invention of Claim 4, the opening part between adjacent support | pillars becomes wide, and the landscape property from the inside of a protective structure can be improved.

  According to the fifth aspect of the present invention, it is possible to reduce the amount of blowing snow and the like into the protective structure.

  According to invention of Claim 6, the area of the opening part between adjacent support | pillars can be changed arbitrarily.

It is a front view of the protection structure which shows Embodiment 1 of this invention. It is a left view of a protection structure same as the above. It is a top view of the protection structure of the state which fixed the floor slab. It is the longitudinal cross-sectional view of the fixed state of a main girder, a precast floor slab, and an in-situ floor slab. It is a top view of a protection structure same as the above. It is a longitudinal cross-sectional view of the fixed state of a precast floor slab and an in-situ floor slab. It is a front view of the protection structure which shows Embodiment 2 of this invention. It is a left view of the protection structure which shows Embodiment 3 of this invention. It is a left view of the protection structure which shows Embodiment 4 of this invention. FIG. 3 is an enlarged view of a main part of the protective structure with the perforated plate closed. FIG. 3 is an enlarged view of the main part of the protective structure with the perforated plate in the open state.

  Embodiments of the present invention will be described below with reference to FIGS. Embodiment described below does not limit the content of this invention described in the claim. In addition, all of the configurations described below are not necessarily essential requirements of the present invention.

Embodiment 1

  The cover-type shelter 1 of this embodiment shown in FIGS. 1-5 is installed so that the road R may be covered, and protects the vehicle, the person, etc. who pass along the road R and the road R from a wind, rain, snow, etc. is there. The cover-type shelter 1 is installed on a pair of support columns 3A and 3B erected from a foundation block 2 embedded in the ground G on both sides of the road R, an upper end surface portion 4 of the support column 3A, and an upper end surface portion 5 of the support column 3B. The main girder 6, a precast floor slab 8 fixed to the upper surface portion 7 of the main girder 6, and an in-situ floor slab 9 placed above the precast floor slab 8 are configured.

  The foundation block 2 is formed of a concrete material into a quadrangular prism shape, and is embedded in the ground G on both sides of the road R so as to be substantially parallel to the longitudinal direction of the road R. The basic block 2 of the present embodiment has a length of about 21 m, but the length can be changed as appropriate.

  The pillars 3A and 3B are formed of a concrete material in a horizontal cross section in a rectangular shape. In addition, the width W1 of the columns 3A and 3B on the side substantially parallel to the longitudinal direction of the road R is constant from the upper end to the lower end, but the columns 3A and 3A on the side substantially perpendicular to the longitudinal direction of the road R are formed. The width W2 of 3B gradually decreases from the upper end toward the lower end. The lower end portion 11 of the support column 3A and the lower end portion 12 of the support column 3B are inserted into the insertion holes 13 formed in the foundation block 2. The length in the longitudinal direction (vertical direction) of the column 3A is slightly shorter than the length in the longitudinal direction (vertical direction) of the column 3B. Further, the upper end surface portion 4 of the column 3A is slightly inclined so that the column 3B side is raised, and the upper end surface portion 5 of the column 3B is slightly inclined so that the column 3A side is lowered. The struts 3A and 3B of the present embodiment are precast members that are manufactured in advance at a factory.

  The pair of support pillars 3A and 3B are provided to face each other in the short direction (width direction) of the road R, and as shown in FIG. 2, five pairs of adjacent support pillars 3A and 3A are arranged in parallel at intervals of about 5 m. Yes. Although not shown, five pairs of adjacent columns 3B and 3B are arranged in parallel at an interval of about 5 m, like the column 3A. Five struts 3A are erected on the foundation block 2 on one side of the road R, and five struts 3B are erected on the foundation block 2 on the other side of the road R. By widening the interval between the adjacent columns 3A and 3A and the interval between the adjacent columns 3B and 3B, the opening 26 between the adjacent columns 3A and 3A and the opening 26 between the adjacent columns 3B and 3B can be widened. it can. Note that a rigid protective fence 10 such as a guard rail is erected on the upper side of the foundation block 2 and inside the columns 3A and 3B.

  The main girder 6 is formed in a quadrangular prism shape from a concrete material. As shown in FIGS. 2 and 4, the cross section in the short direction of the main girder 6 has a trapezoidal shape, and the upper side 14 is formed longer than the lower side 15. The main girder 6 is placed and installed on the upper end surface portions 4 and 5 of the pair of support columns 3A and 3B. The columns 3A, 3B and the main beam 6 are connected by a PC steel material (not shown), and prestress is introduced by a so-called post tension system. In the present embodiment, since five pairs of support columns 3A and 3B are provided, five main beams 6 are also provided. The main girder 6 of this embodiment is a precast member manufactured in advance at a factory.

  The precast floor slab 8 is disposed on the upper end surfaces 16 and 16 of the adjacent main girders 6 and 6 so as to be perpendicular to the longitudinal direction of the main girders 6. The precast floor slab 8 is formed in a rectangular plate shape with a concrete material, and is pre-manufactured in a factory and conveyed to a construction site of the covering shelter 1 by a vehicle (not shown) such as a truck or a trailer. . As shown in FIG. 3, in the present embodiment, 14 precast floor slabs 8 are installed on a pair of main girders 6 and 6. The vertical and horizontal lengths and thicknesses of the precast floor slab 8 can be changed as appropriate, and the number of precast floor slabs 8 installed on the pair of main girders 6 and 6 can be changed as appropriate.

  FIG. 4 shows a cross-section of the joint portion between the main beam 6 and the precast floor slab 8, and the main beam 6 and the precast floor slab 8 are connected by an anchor bolt 17. The precast slabs 8, 8 adjacent to each other in the longitudinal direction of the cover type shelter 1 are fixed with a gap 18. On the other hand, the precast floor slabs 8 and 8 adjacent to each other in the short direction of the covering shelter 1 are in contact with each other. FIG. 3 is a plan view of the cover type shelter 1 in a state where the precast floor slab 8 is fixed to the main girder 6. A total of 56 precast floor slabs 8 are used.

  On the top of the precast floor slab 8, an in-situ floor slab 9 is placed. The on-site floor slab 9 is formed by placing a concrete material so as to cover the upper surface 19 of the precast floor slab 8, and the on-site floor slab 9 is also disposed in the gap 18. A gap 18 is formed between the precast slabs 8, 8 adjacent to each other in the longitudinal direction of the covering shelter 1, but the upper end surface 16 of the main beam 6 forms the bottom of the gap 18. Therefore, the precast floor slab 8 and the upper end surface 16 of the main girder 6 function as a formwork for the bottom portion when the on-site floor slab 9 is placed. Therefore, the formwork of the bottom part of the on-site slab slab 9 becomes unnecessary. FIG. 5 shows a plan view of the covering type shelter 1 after the on-site slab 9 is placed.

  As shown in FIG. 6, hooked reinforcing bars 20, which are gibber bars as a detent for both, are embedded in the precast floor slab 8 and the in-situ floor slab 9. The hooked reinforcing bar 20 is formed with hook portions 21 with a bending angle of 180 ° at both ends. The straight main body portion 22 side of the reinforcing bar 20 with hook is embedded in the precast floor slab 8, and both end portions 23 side of the hook portion 21 are embedded in the in-situ floor slab 9. The precast floor slab 8 and the in-situ floor slab 9 are firmly joined by the hooked reinforcing bar 20.

  The precast floor slab 8 and the in-situ floor slab 9 are provided with hooked reinforcing bars 20 </ b> A that are buried in a position shifted with respect to the hooked reinforcing bars 20. The hooked reinforcing bar 20A is formed in the same shape as the hooked reinforcing bar 20. In addition, a plurality of orthogonal reinforcing bars 24 that are reinforcing bars disposed perpendicular to the reinforcing bars 20 with hooks and the reinforcing bars 20A with hooks are provided. The reinforcing bars 20 and 20A with hooks connect the precast floor slabs 8 and 8 adjacent to each other in the longitudinal direction of the cover type shelter 1, and the orthogonal bars 24 are 14 precast floor slabs 8 arranged in the short direction of the cover type shelter 1. Are all penetrated. In this embodiment, the precast floor slab 8 and the in-situ floor slab 9 are connected by the hooked reinforcing bar 20, the hooked reinforcing bar 20A, and the orthogonal reinforcing bar 24. You may couple | bond by a coupling | bonding means.

  The top surface 25 of the in-situ floor slab 9 is inclined by about 2% so that the column 3A side is lower than the column 3B side. Thereby, it is possible to prevent rainwater and the like from flowing along the top surface 25 of the in-situ floor slab 9 and storing rainwater and the like on the top surface 25.

  As described above, the covering shelter 1 of this embodiment includes a plurality of parallel support columns 3A and 3B, a main beam 6 installed on the upper portions of the pair of support columns 3A and 3B, and adjacent main beams 6 and 6. A precast floor slab 8 installed on the top of the main girder 6, and the main girder 6 and the precast floor slab 8 are provided separately to cover the longitudinal direction of the main girder 6 and parallel to the short direction of the shelter 1 And the longitudinal direction of the precast floor slab 8 can be disposed parallel to the longitudinal direction of the covering shelter 1. Therefore, the length of the precast floor slab 8 in the longitudinal direction can be increased, and the interval between the adjacent columns 3A and 3A and the interval between the adjacent columns 3B and 3B can be increased. Thereby, while being able to improve the scenery from the inside of covering type shelter 1, the number of installation of support | pillar 3A, 3B can be reduced and the manufacturing cost of covering type shelter 1 can be reduced.

  Moreover, since the precast floor slab 8 is a precast member, the cover type shelter 1 of the present embodiment can be manufactured in advance at the factory, and the case where the cover type shelter 1 is manufactured at the construction site. In comparison, the manufacturing cost can be reduced. Moreover, the length of the longitudinal direction of the precast floor slab 8 can be set to the length which can be loaded on the loading platform of vehicles, such as a truck used when transporting the precast floor slab 8 to the construction site of the covering type shelter 1. Therefore, by increasing the length of the precast floor slab 8 in the longitudinal direction, the interval between the adjacent columns 3A and 3A and the interval between the adjacent columns 3B and 3B can be increased.

  Further, in the covering type shelter 1 of the present embodiment, the distance between the adjacent struts 3A, 3A and the adjacent struts 3B, 3B is 3 m or more, so that the opening 26 between the adjacent struts 3A, 3A and the adjacent struts The opening 26 between 3B and 3B can be made wide.

Embodiment 2

  FIG. 7 shows a second embodiment of the present invention, in which the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The cover type shed 31 of the present embodiment is installed so as to cover the road R provided along the slope S of the mountain, and protects vehicles, people, etc. passing through the road R and road R from wind, rain, snow, etc. To do. The cover-type shed 31 is composed of a support 3A erected from a foundation block 2 embedded in the ground G on one side of the road R and a foundation part embedded in the ground G on the other side of the road R. 32, a support wall 33 as a wall body, a main girder 6 installed on the upper end surface portion 4 of the column 3A and the mounting portion 34 of the support wall 33, and a precast floor slab fixed to the upper surface portion 7 of the main girder 6. 8 and an in-situ floor slab 9 placed above the precast floor slab 8.

  The support columns 3A are opposed to the support wall 33, and are provided upright on the foundation block 2 in the same manner as in the first embodiment. The number and size of the main beam 6 and the precast floor slab 8 used are the same as those in the first embodiment.

  The support wall 33 is formed of a base portion 32 extending in the horizontal direction and a wall portion 35 erected from the base portion 32, and the upper end portion 36 of the wall portion 35 is notched on the road R side. A placement portion 34 is formed. The mounting portion 34 is slightly inclined so that the road R side is lowered.

  The main girder 6 is placed on the upper end surface portion 4 of the column 3A and the placement portion 34 of the support wall 33 so as to be installed. The support 3A and the main beam 6 are connected by a PC steel material (not shown), and pre-stress is introduced by a so-called post tension system. Further, the support wall 33 and the main beam 6 are connected by an anchor bolt 37.

  The top surface 25 of the in-situ floor slab 9 of this embodiment is inclined by about 10% so that the column 3A side is lower than the support wall 33 side, and the rain water etc. on the top surface 25 of the in-situ floor slab 9 flows. It can be drained.

  As described above, the covering shed 31 of this embodiment includes a plurality of juxtaposed support columns 3A, a support wall 33 facing the support columns 3A, a main girder 6 erected on the support columns 3A and the support wall 33, and adjacent to the support shelves 3A. A precast floor slab 8 installed on the upper part of the main girders 6 and 6, and the main girder 6 and the precast floor slab 8 are provided separately so that the longitudinal direction of the main girder 6 is covered. It can arrange | position in parallel with the transversal direction, and can arrange | position the longitudinal direction of the precast slab 8 in parallel with the longitudinal direction of the covering type shed 31. Therefore, the length of the precast floor slab 8 in the longitudinal direction can be increased, and the interval between the adjacent columns 3A, 3A can be increased. Thereby, while being able to improve the scenery property from the inside of the covering type shed 31, the number of installation of the support | pillar 3A can be reduced and the manufacturing cost of the covering type shed 31 can be reduced.

Embodiment 3

  FIG. 8 shows Embodiment 3 of the present invention, in which the same parts as those in Embodiments 1 and 2 are given the same reference numerals, and detailed description thereof is omitted. In the present embodiment, a resin net 41 and a support material 42 are provided as protective fences for wind and snow protection between the adjacent struts 3A and 3A and between the adjacent struts 3B and 3B.

  A support material 42 for fixing the resin net 41 is attached to the columns 3A and 3B and the main beam 6. The support member 42 is formed of a metal such as aluminum, stainless steel, or steel, and is fixed to the columns 3A and 3B and the main beam 6 by a known fixing means such as a bolt.

  The resin net 41 is formed by knitting synthetic resin fibers such as polyester in a lattice shape. Both ends of the resin net 41 in the horizontal direction are fixed to the support member 42 by known fixing means such as bolts. The resin net 41 can select a desired wind shielding rate by changing the mesh pitch. Further, the resin net 41 of the present embodiment has an upper end 43 that is substantially the same height as the upper end surface portions 4 and 5 of the pillars 3A and 3B, and a lower end 44 that is positioned at a height of about 1 m from the road R and the ground G. ing. Therefore, in this embodiment, the opening 26 is between the upper end 43 of the resin net 41 and the precast floor slab 8 and between the lower end 44 of the resin net 41 and the foundation block 2. In addition, the magnitude | size of the resin net 41 can be changed suitably, and the opening part 26 can be made into a desired magnitude | size. Further, the resin net 41 may be provided from the foundation block 2 to the precast floor slab 8 and the opening 26 may not be provided.

  The resin net 41 prevents the strong wind and snow in the winter from entering the inside of the covering shelter 1 and the covering shed 31. In other seasons, the resin net 41 is used for the covering shelter 1 and the covering shed 31. Adjacent struts 3A, 3A can be divided into upper and lower parts so that the outside can be clearly seen from the inside, and can be rotated around a horizontal axis (not shown) or can be wound upward. In addition, a large opening 26 between the columns 3B and 3B may be secured. Further, the resin net 41 may be provided so as to be easily detachable and may be removed except in winter.

  In the present embodiment, the resin net 41 is used as the protective fence. However, the protective fence can be a metal net or a protective fence as long as the amount of wind and snow blown into the covering shelter 1 and the covering shed 31 can be reduced. A known material such as a plate can be used.

  As described above, the cover type shelter 1 and the cover type shed 31 of the present embodiment are provided inside the cover type shelter 1 and the cover type shed 31 by providing the resin net 41 and the support material 42 on the columns 3A and 3B. The amount of wind and snow blown can be reduced.

Embodiment 4

  FIGS. 9-11 shows Embodiment 4 of this invention, attaches | subjects the same code | symbol to the same part as the said Embodiment 1-3, the detailed description is abbreviate | omitted and explained in full detail. In the present embodiment, a plurality of perforated plates 51 are used instead of the resin net 41 of the third embodiment. The perforated plate 51 is formed in a rectangular plate shape from a metal such as aluminum, stainless steel, and steel, and a plurality of through holes 52 are formed. The wind shielding rate can be adjusted by appropriately changing the shape, size, and number of the through holes 52.

  A support member 42 is attached to the support columns 3A and 3B and the main girder 6, and a perforated plate 51 is attached to the support member 42 so as to be rotatable around a shaft portion 53 in the horizontal direction. In the present embodiment, seven perforated plates 51 are provided in the vertical direction, and the seven perforated plates 51 are connected by connecting members 54 provided at both ends in the horizontal direction. The plate 51 is rotated integrally. Therefore, the guard fence of the present embodiment includes the perforated plate 51, the support material 42, and the connecting member 54. Note that the number of the perforated plates 51 can be changed as appropriate.

  The perforated plate 51 can increase the wind shielding rate by being in a closed state that is substantially vertical as shown in FIG. 10, and can be blocked by being in an open state that is substantially horizontal as shown in FIG. The wind rate can be lowered. Further, by setting the perforated plate 51 in a substantially horizontal state, the outside can be seen well from the inside of the covering shelter 1 and the covering shed 31.

  When the perforated plate 51 is opened, an opening 26 is formed between the perforated plates 51 and 51 adjacent to each other in the vertical direction. Therefore, in the present embodiment, the area of the opening 26 can be increased by opening the perforated plate 51, and the area of the opening 26 can be reduced by closing the perforated plate 51.

  As described above, the cover-type shelter 1 and the cover-type shed 31 of the present embodiment are provided so that the area of the opening 26 between the columns 3A and 3A adjacent to each other and the columns 3B and 3B can be changed. Therefore, it is possible to reduce the amount of wind and snow blown into the cover type shelter 1 and the cover type shed 31 by closing the perforated plate 51, and by opening the perforated plate 51. The outside can be easily seen from the inside of the covering type shelter 1 and the covering type shed 31 and the scenery can be enhanced.

  In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, the number of parallel pairs of columns may be increased or decreased. Moreover, you may change suitably the space | interval of an adjacent support | pillar. Further, a plurality of cover-type shelters and cover-type sheds may be provided continuously.

1 Covered shelter (protective structure)
2
3A, 3B Prop 6 Main girder 8 Precast floor slab (floor slab)
26 Opening 33 Support Wall (Wall)
41 Resin net (protective fence)
42 Support material (guard fence)
51 Perforated plate (guard fence)
54 Connecting member (guard fence)

Claims (6)

A plurality of parallel struts,
A main girder erected on top of the pair of struts;
A floor slab erected on top of the adjacent main girder,
A protective structure, wherein the main girder and the floor slab are provided separately. A plurality of parallel columns,
A wall facing the column;
A main girder erected on the column and the upper part of the wall;
A floor slab erected on top of the adjacent main girder,
A protective structure, wherein the main girder and the floor slab are provided separately.   The protective structure according to claim 2, wherein the floor slab is a precast member.   The protective structure according to any one of claims 1 to 3, wherein an interval between adjacent struts is 3 m or more.   The protective structure according to claim 1, wherein a protective fence is provided on the support column.   The protective structure according to claim 5, wherein the protective fence is provided so that an area of an opening between adjacent pillars can be changed.

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