WO2017013694A1 - 架構構造及びその構築方法 - Google Patents
架構構造及びその構築方法 Download PDFInfo
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- WO2017013694A1 WO2017013694A1 PCT/JP2015/006047 JP2015006047W WO2017013694A1 WO 2017013694 A1 WO2017013694 A1 WO 2017013694A1 JP 2015006047 W JP2015006047 W JP 2015006047W WO 2017013694 A1 WO2017013694 A1 WO 2017013694A1
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- hole
- columns
- pair
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- joint
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
- E04B1/5837—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially circular form
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2103/00—Material constitution of slabs, sheets or the like
- E04B2103/02—Material constitution of slabs, sheets or the like of ceramics, concrete or other stone-like material
Definitions
- the present invention relates to a frame structure having a PC column and a PC beam, and a method of constructing the frame structure.
- RC reinforced concrete
- PC precast concrete
- the PC member can be assembled without placing concrete at the joint between PC members, such as a joint (a joint between a column and a beam), etc.
- Various methods have been proposed (see, for example, Patent Documents 1 and 2).
- a PC member having a through hole for inserting a column main bar or a beam main bar, or a PC member having a mechanical joint member for reinforcing bar connection embedded in a joint surface is prepared, and the PC member is at a predetermined position. After being arranged in the above, the distal end of the relay muscle inserted into the through hole of the PC member is connected to the mechanical joint member of the adjacent PC member.
- the PC beam in order to suppress an increase in the number of joints, is configured such that the main beam of the beam projecting horizontally from the end face in the member axial direction forms a relay. Therefore, when arranging PC members such as PC beams and PC connection parts, it is necessary to move the PC members in the horizontal direction, and advanced crane operation technology and skilled workers are necessary for arranging the PC members. become. In addition, the procedure is limited because, for example, the PC pillar member, the PC connection member, and the PC beam member must be alternately arranged, and an efficient construction procedure can not be taken.
- the present invention has an object of providing a frame structure and a method of constructing the frame structure, in which a PC member can be easily assembled.
- the present invention has a plurality of PC (precast concrete) pillars (10) arranged in the first direction (X) in plan view, and upper end bars extending in the axial direction of the member. And at least one first PC beam (11) bridged to the pair of PC columns (10) adjacent to each other in the first direction (X), and having a first beam main bar (24) including lower end bars And the first PC beam (11) has a first joint (33) at an end portion of the first beam main bar (24) so as to open to both end surfaces in a member axial direction. , 72) are formed, and the pair of PC pillars (10) are opened at a position facing the corresponding first bottomed hole (26).
- PC precast concrete
- a first through hole (31) is formed, and a member axis of the first PC beam (11)
- the opposite end portions are inserted into the first bottomed holes (26) and joined to the first beam main bars (24) via the first joints (33, 72) and the first through holes (31).
- the configuration is
- the first PC beam can be arranged between the pair of PC columns before the first reinforcing bar is arranged, the arranging operation of the PC column and the first PC beam can be facilitated, and the efficiency is improved.
- the placement operation of the PC column and the first PC beam can proceed in a good procedure.
- the first bottomed hole (26) is formed to extend along the first beam main bar (24) adjacent to the first beam main bar (24),
- the first reinforcing bar (32) has a length in which the main beam bar (24) overlaps the first reinforcing bar (32) over a predetermined joint length, and the first joint overlaps the first main beam bar (24) Joint consisting of a lap portion inserted in the first bottomed hole (26) and a grout filled around the first reinforcing bar (32) in the first bottomed hole (26). It is good that it is (33).
- the PC pillar and the first PC beam can be rigidly connected without using a mechanical joint member. Therefore, material costs can be reduced.
- the first bottomed hole (26) is formed by a cylindrical member (71) holding an axial end of the first beam main bar (24), and the first joint is
- the mechanical joint (72) may be configured to hold the axial end of the first beam main bar (24) by a cylindrical member (71).
- the first reinforcing bar (32) has a fixing portion (32a) which bulges in a radial direction inside the first through hole (31).
- the first reinforcing bar can be reliably fixed to the PC column. Moreover, even if the cross-sectional dimension of the PC column is less than the dimension necessary for fixing the first reinforcing bar, the first reinforcing bar can be fixed to the PC column.
- the PC pillar (10) is provided with a support portion (13) for supporting the first PC beam (11).
- the first PC beam can be joined to the PC column in a stable state in which the first PC beam is supported by the PC column without providing a temporary facility such as a gantry for supporting the first PC beam. . Therefore, the assembling operation of the PC column and the PC beam can be made easier.
- the upper ends of the PC pillars (10) are arranged in a plurality of rows in a second direction (Y) intersecting the first direction (X) in plan view, and extend in the member axial direction.
- at least one second PC beam (12) bridged to the pair of PC columns (10) adjacent to each other in the second direction (Y), having a second beam main bar (41) including lower end bars
- the second PC beam (12) further includes a second joint (45) for forming a second joint (45) at an end portion of the second beam main bar (41) so as to open at both end surfaces in a member axial direction.
- a bottom hole (42) is formed, and the pair of PC columns (10) adjacent to each other in the second direction (Y) is opened at a position facing the second bottomed hole (42).
- a second through hole (43) is formed, and both axial ends of the second PC beam (12)
- a second reinforcing bar (44) inserted into the bottomed hole (43) and joined to the second beam main bar (41) via the second joint (45) and disposed in the second through hole (43)
- the grout filled around the second reinforcing bar (44) in the second through hole (43) may be rigidly connected to the pair of the PC columns (10).
- the arrangement operation of the PC column and the second PC beam can be facilitated not only in the first direction but also in the second direction, and the arrangement operation of the PC column and the second PC beam in an efficient procedure Can proceed.
- first PC beam (11) and the second PC beam (12) be rigidly joined to the PC column (10) at different heights.
- the first through holes and the second through holes are disposed in a dispersed manner, whereby the filling failure of concrete due to the concentrated arrangement of the first through holes and the second through holes at the time of manufacture of the PC column It is possible to prevent the quality deterioration of Moreover, it can prevent that a member dimension becomes large for quality ensuring.
- the PC pillars (10) are arranged in at least three rows in the first direction (X), and both ends of the first PC beam (11) are adjacent to each other in the first direction (X).
- Both end fixed beams (11A) rigidly joined to a pair of the PC columns (10), and a pair of the PC columns (10) whose both ends of the first PC beam (11) are adjacent to each other in the first direction (X)
- the simple beams (11B) to be pin-joined may be disposed adjacent to each other in the first direction (X).
- the first PC beams (11) are bridged in a plurality of stages at positions different in the height direction with respect to the pair of PC columns (10) adjacent to each other in the first direction (X).
- the PC pillar (10) is formed to have a length supporting the plurality of first PC beams (11).
- the number of PC columns can be reduced, the overall manufacturing cost of the PC columns can be reduced, and the assembly operation can be made easier.
- the first PC beams (11) are bridged in a plurality of stages at positions different in the height direction with respect to the pair of PC columns (10) adjacent to each other in the first direction (X) And both end fixing beams (11A) rigidly joined to the pair of PC columns (10) in which both ends of the first PC beam (11) are adjacent to each other in the first direction (X), and the first PC beam (11)
- simple beams (11B) whose both ends are pin-joined to a pair of the PC columns (10) adjacent to each other in the first direction (X) are arranged adjacent to each other in the vertical direction.
- the present invention comprises a plurality of PC columns (10) and at least one first PC beam (11) rigidly joined to a pair of the PC columns (10) adjacent to each other.
- a method of constructing a frame structure (1) comprising: a first beam main bar (24) including an upper end bar and a lower end bar extending respectively in a member axial direction, and an end of the first beam main bar (24) Preparing the first PC beam (11) in which the first bottomed holes (26) for forming the first joints (33, 72) are formed in the member axial direction both end faces in the first part, and the first through holes (31) preparing the PC pillar (10) formed so as to open to the side, and building a pair of the PC pillar (10) so as to align in the first direction (X) in plan view And the first bottomed hole (26) faces the first through hole (31) And disposing the first PC beam (11) between the pair of PC columns (10), and the first rebar (32) in the first through hole (31) and the first bottomed
- the arrangement operation of the PC column and the first PC beam can be facilitated, and the efficiency is high.
- the placement work of the PC pillar and the first PC beam can be advanced according to the procedure.
- FIG. 1 Front view of frame structure seen in II direction in FIG. 1
- An enlarged cross-sectional view of part III in FIG. 1 Sectional view along line IV-IV in FIG. 3 Sectional view along the line V-V in FIG. 3 Sectional view along the line VI-VI in FIG. 3
- An enlarged sectional view showing the construction state of the part III in FIG. 1 Enlarged sectional view of the part IX in FIG. 2
- An enlarged sectional view showing the construction state of the X portion in FIG. 1 Explanatory drawing of the construction procedure which shows the (A1-C1) side surface of a frame structure and the (A2-C2) front.
- FIG. 1 schematically shows a side view of the frame structure 1
- FIG. 2 schematically shows a front view of the frame structure 1.
- the frame structure 1 according to the present embodiment constitutes one unit of a pipe rack used for a plant facility, and a plurality of units are provided continuously or intersected in a plant site.
- the frame structure 1 of one unit will be described with the left-right direction of the paper surface of FIG. 1 as the first direction X and the left-right direction of the paper surface of FIG.
- the frame structure 1 includes a plurality of (at least four) columns 2 arranged in a plurality of rows in the first direction X and in a plurality of rows in the second direction Y.
- the frame structure 1 includes a total of 12 columns 2 in six rows in the first direction X and in two rows in the second direction Y.
- the angle between the first direction X and the second direction Y is 90 ° in the present embodiment. That is, the columns 2 are arranged in a lattice in the first direction X and the second direction Y which are orthogonal to each other in plan view.
- the arrangement direction of the columns 2 is not limited to this.
- the columns of the columns 2 arranged in the first direction X shown in FIG. 1 are referred to as the first to sixth columns in order from the left, and the columns of the columns 2 arranged in the second direction Y shown in FIG.
- the explanation will be given as Column A and Column B sequentially from the left.
- the frame structure 1 includes a first beam 3 bridged between a pair of columns 2 adjacent to each other in the first direction X shown in FIG. 1 and a pair of columns 2 adjacent to each other in the second direction Y shown in FIG. And a second beam 4 mounted on the The first beam 3 extends in the first direction X, and the second beam 4 extends in the second direction Y.
- the columns 2 are all the same length.
- the distance between pillars in the first to fifth rows is substantially the same, and the distance between pillars in the fifth and sixth rows is shorter than the distance between the pillars in the first to fifth rows .
- the inter-pillar distance between the A and B rows is longer than the inter-pillar distance from the first to fifth rows.
- All the columns 2 are supported by footings 5 constructed to be able to transmit loads to the ground G.
- the first and second rows of footings 5, the third and fourth rows of footings 5, and the fifth and sixth rows of footings 5 are connected to each other by underground beams 6, respectively.
- underground beams 6 are not provided between the footings 5 of the second and third rows, between the footings 5 of the fourth and fifth rows, and between the footings 5 of the A and B rows.
- Each footing 5 has a peripheral wall 5 a surrounding the lower end of the column 2 so that the column 2 can stand.
- Each pillar 2 is composed of a lower PC pillar 10L which is a PC member erected on the footing 5 and an upper PC pillar 10U which is a PC member erected on the lower PC pillar 10L.
- the PC pillars 10 when it is not necessary to distinguish between the lower side and the upper side, they are simply referred to as the PC pillars 10.
- the first beam 3 is bridged in five stages (five layers) at different positions in the height direction with respect to a pair of columns 2 adjacent to each other in the first direction X.
- the steps of the first beam 3 arranged in the vertical direction will be described as the first to fifth steps in order from the bottom.
- the first beams 3 of each step are arranged at the same height on all five structural surfaces formed between a pair of columns 2 adjacent to each other in the first direction X, and form a straight continuous beam doing.
- the distance between beams in the vertical direction of the first beam 3 is substantially the same.
- the first beam 3 of the first to third stages is bridged to the lower PC column 10L, and the first beam 3 of the fourth and fifth stages is bridged to the upper PC column 10U.
- Each of the first beams 3 provided between a pair of columns 2 adjacent to each other in the first direction X is configured by a first PC beam 11 (11A or 11B) which is a single PC member.
- each of the first beams 3 may be constituted by a plurality of PC members joined to each other in the axial direction of the member after being carried into the site.
- some of the first beams 3 may be configured of PC members and cast-in-place concrete.
- the first PC beams 11 arranged in the first, third and fifth steps are a first rebar 32 and a detail described later. Both ends are fixedly connected to the PC column 10 by grout as fixed-end fixed beams.
- the other first PC beams 11 are simple beams whose both ends are pin-bonded to the PC column 10.
- the 1st PC beam 11 which makes a both-ends fixed beam is called the 1st PC fixed beam 11A
- the 1st PC beam 11 which makes a simple beam is called the 1st PC simple beam 11B.
- the same reference numerals are also shown in the drawings.
- the structural surface of the frame structure 1 in the first direction X has a portion where the first PC fixed beam 11A and the first PC simple beam 11B are arranged adjacent to each other in the first direction X, and the first PC fixed beam 11A and the first PC fixed beam It has a portion in which the 1PC simple beam 11B is disposed adjacent to each other in the vertical direction.
- the first PC fixed beam 11A and the first PC simple beam 11B are alternately arranged in the first direction X between the first column to the fifth column.
- the first PC fixed beam 11A and the first PC simple beam 11B are alternately arranged in the vertical direction between the first and second rows and between the third and fourth rows.
- the first PC simple beam 11B has a small cross section in which both the beam width and the beam formation are smaller than the first PC fixed beam 11A.
- the second beams 4 are bridged in five stages at different positions in the height direction with respect to a pair of columns 2 adjacent to each other in the second direction Y.
- the distance between the beams in the vertical direction of the second beam 4 is substantially the same. Further, the distance between the beams in the vertical direction of the second beam 4 is substantially the same as the distance between the beams in the vertical direction of the first beam 3.
- the second beam 4 of each step is disposed at a position higher than the first beam 3 of the corresponding step. That is, the first beam 3 and the second beam 4 are bridged across the pair of columns 2 at different heights.
- the second beams 4 of the first and second stages are bridged to the lower PC column 10L, and the second beams 4 of the third to fifth stages are bridged to the upper PC column 10U.
- Each of the second beams 4 bridged between a pair of columns 2 adjacent to each other in the second direction Y is constituted by a second PC beam 12 (12A or 12B) which is a single PC member.
- the second PC beams 12 arranged in the first, third and fifth stages are fixed at both ends fixedly connected to the PC column 10 by the second reinforcing bars 44 and grout which will be described in detail later.
- the other second PC beams 12 are simple beams whose both ends are pin-bonded to the PC column 10.
- 2nd PC fixed beam 12A the 2nd PC beam 12 which makes a both-ends fixed beam
- 2nd PC simple beam 12B the 2nd PC beam 12 which makes a simple beam
- the second PC fixed beams 12A and the second PC simple beams 12B are alternately arranged in the vertical direction.
- the second PC simple beam 12B has a small cross section in which both the beam width and the beam formation are smaller than the second PC fixed beam 12A.
- FIG. 2 shows the structure of the first row, as shown by a broken line in FIG. 1, the joint structure or support structure of the second PC beam 12 is also the first row and also in the second to sixth rows. It is the same arrangement.
- FIG. 3 is an enlarged cross-sectional view of a portion III in FIG. 1 and shows a joint structure of the first PC fixed beam 11A and the PC column 10 and a joint structure of the first PC simple beam 11B and the PC column 10. Although only one end of each of the first PC fixed beam 11A and the first PC simple beam 11B is shown in FIG. 3, the other ends are symmetrical with these.
- the PC pillar 10 is provided with a first support portion 13 for supporting the first PC fixed beam 11A.
- the first support portion 13 is an angle 14 detachably provided on the PC pillar 10 so as to extend horizontally below the joint portion between the first PC fixed beam 11A and the PC pillar 10; It comprises an unshown insert nut and bolt 15 embedded in the PC post 10 to attach the angle 14 or an insert bolt and nut.
- the first support portion 13 is used for positioning when arranging the first PC fixing beam 11A at a predetermined position, and until the positioned first PC fixing beam 11A is rigidly connected to the PC pillar 10, Used to support the load. Therefore, after the first PC fixing beam 11A is rigidly connected to the PC column 10, the angle 14 may be removed.
- the PC pillar 10 is provided with a second support portion 16 for supporting the first PC simple beam 11B.
- the second support portion 16 is an RC bracket integrally formed on the PC post 10 so as to protrude from the side surface of the PC post 10 immediately below the joint with the first PC simple beam 11B.
- the second support portion 16 is used for positioning when disposing the first PC simple beam 11B at a predetermined position, and is also used to pin-join the positioned first PC simple beam 11B to the PC column 10.
- the first PC simple beam 11B has a small cross section in which both the beam width and the beam formation are smaller than the first PC fixed beam 11A.
- the first PC simple beam 11B is disposed coaxially with the first PC fixed beam 11A in the beam width direction so that the height of the upper surface is the same. Therefore, the second support portion 16 is formed at a position lower than the lower surface of the first PC simple beam 11B so as not to interfere with the first through holes 31 described later, and is provided at both axial end portions of the first PC simple beam 11B.
- a raised portion 17 is integrally formed to project downward from the lower surface.
- the joint structure of the first PC simple beam 11B and the PC column 10, which is pin-joined, is fixed to the PC column 10 to such an extent that the first PC simple beam 11B is not detached when it is used (pipe laying and pipe supporting). As long as it is done, there is no need to actually use a pin.
- positioning holes 18 extending in the vertical direction are formed to penetrate in the axial direction both end portions of the first PC simple beam 11B in which the raised portions 17 are formed.
- anti-slip bars 19 are provided in the second support portion 16 of the PC column 10 so as to protrude from the upper surface.
- the first PC simple beam 11B is pin-joined to the PC pillar 10 by being placed on the second support 16 so that the positioning holes 18 receive the anti-slip bars 19.
- the positioning hole 18 has a dimension larger than the anti-displacement rebar 19 in the member axial direction of the first PC simple beam 11B, and the end of the first PC simple beam 11B can slide in the member axial direction.
- FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3, and FIGS. 5 and 6 are cross-sectional views of the first PC fixed beam 11A shown along the lines VV and VI-VI in FIG. is there.
- the PC column 10 has a generally square rectangular cross section, and is disposed outside the plurality of column main bars 21 extending in the axial direction of the member near the outer edge of the inner side or the column main bars 21. It has a rectangular strip 22 or the like.
- the column main bars 21 are arranged at substantially equal intervals in the circumferential direction in the cross section of the PC column 10.
- the first PC fixing beam 11A has a vertically long rectangular cross section, and is arranged near the outer edge of the inside and extends in the member axial direction, the plurality of first beam main bars 24, or the first It has a beard muscle 25 (star wrap) or the like disposed on the outside of the main beam bar 24.
- the first beam main reinforcement 24 has an upper end reinforcement disposed in the vicinity of the upper surface in the second step and a lower end reinforcement disposed in the vicinity of the lower surface in the vicinity of the lower surface in the cross section of the first PC fixed beam 11A.
- the first beam main bars 24 are arranged at substantially equal intervals near the outer edge of the first PC fixed beam 11A at the middle portion in the member axial direction and extend in the member axial direction There is.
- the first beam main bar 24 is bent inward in the width direction or inward in the height direction from the middle to the end in the axial direction of the member and extends obliquely with respect to the axial direction of the member, and then bent again It extends in the axial direction of the member and extends from the end surface in the member axial direction of the first PC fixing beam 11A to a position for securing a predetermined covering thickness.
- the first bottomed hole 26 is a hollow formed by the sheath 27 disposed in the mold along the first main beam bar 24 when the first PC fixed beam 11A is manufactured (before concrete placement). That is, the first bottomed hole 26 extends along the first main beam bar 24 adjacent to the first main beam bar 24.
- the sheath 27 may be shaped to have irregularities, for example, by a spiral tube so that the adhesive force of the grout filled after the first reinforcing bar 32 is inserted into the first bottomed hole 26 is increased.
- a plurality of first through holes 31 are formed in the PC pillar 10 so as to open at positions facing the first bottomed holes 26.
- the first through hole 31 extends from the position facing the first bottomed hole 26 in the axial direction of the first PC fixed beam 11A, and is linearly continuous with the first bottomed hole 26.
- the first through hole 31 has an enlarged diameter portion 31 a that is enlarged at the end opposite to the first bottomed hole 26.
- the enlarged diameter portions 31 a of the plurality of first bottomed holes 26 are independent so that air does not remain at the time of injection of grout described later into the first bottomed holes 26.
- FIG. 7 is an enlarged view of a part VII in FIG. As shown in FIG. 3, FIG. 4 and FIG. 7, in the first through holes 31 and the first bottomed holes 26 arranged to be continuous in a straight line, the first reinforcing bars 32 from the first through holes 31 side. Is inserted.
- the first reinforcing bar 32 is formed of a deformed bar, and has a conically shaped head 32a radially bulging at the rear end in the insertion direction.
- the first reinforcing bar 32 has a portion inserted in the first bottomed hole 26 in a state in which the head 32a is disposed in the enlarged diameter portion 31a of the first through hole 31 and the first beam main bar 24 over a predetermined joint length L1. It is considered to be a length that overlaps the
- the first through holes 31 and the first bottomed holes 26 are filled with grout injected after the first reinforcing bars 32 are inserted.
- the lap portion overlapping the first beam main bar 24 is joined to the first beam main bar 24 by forming the first lap joint 33 (deep lap joint), and the head 32a fixes the fixing portion Therefore, it is fixed to the PC column 10 with a sufficient fixing power.
- the cross-sectional dimension of the PC column 10 is sufficiently large, and the portion of the first reinforcing bar 32 disposed inside the first through hole 31 has a length that can exhibit a sufficient fixing power, the first reinforcing bar 32 is It is not necessary to have the head 32a.
- the head 32a supplements the fixing force of the first reinforcing bar 32 to the PC column 10 (mainly, the resistance to the tensile force from the first PC fixed beam 11A side), and is not limited to the conical shape.
- the head 32 a may be a disc shape or a hook formed by bending the end of the first reinforcing bar 32.
- FIG. 8 is an enlarged cross-sectional view of a portion III in FIG. 1 corresponding to FIG. 3, and shows the installed state in order to explain the installation method of fixing the first PC fixed beam 11A to the PC column 10.
- the first PC fixed beams 11A are spaced apart from each other with respect to the PC column 10, and are also adjacent to each other in the first direction X with some gaps between them. It is disposed between a pair of embedded PC columns 10.
- the first PC fixing beam 11A is supported by the level adjusting plate 34 disposed on the angle 14 until it is rigidly connected to the PC column 10. In this state, the first bottomed hole 26 faces the first through hole 31.
- the first reinforcing bar 32 is inserted into the first through hole 31 and the first bottomed hole 26 from the first through hole 31 side, and a predetermined joint length in the first bottomed hole 26
- the first main bars 24 are overlapped over the length L1.
- the first PC simple beam 11B and the raised portion 17 which are disposed on the left side with respect to the PC column 10 in FIG. 8 and are to be pin-bonded to the PC column 10 are not disposed.
- a gap between the first PC fixing beam 11A and the PC column 10 is provided to facilitate the operation of arranging the first PC fixing beam 11A between the pair of PC columns 10 built.
- the grout form 35 filled in the gap between the PC column 10 and the first PC fixing beam 11A can be disposed along the lower surface of the first PC fixing beam 11A. It is provided to do so.
- the formwork 35 is annularly provided at an axial end of the first PC fixing beam 11A so as to close a gap with the PC column 10.
- the first PC fixing beam 11A is formed with a grout injection passage 36 having an upstream end opening in the upper surface and a downstream end opening in the axial end surface. Further, the first PC fixing beam 11A is formed with a plurality of air venting passages 37 having an upstream end opening in the vicinity of the bottom of each first bottomed hole 26 and a downstream end opening on the upper surface of the first PC fixing beam 11A. It is done.
- the grout injection passage 36 and the air removal passage 37 are formed by a tube embedded in the first PC fixed beam 11A.
- the PC pillar 10 is provided with a plurality of air venting passages 38 having an upstream end opened to the upper part of the enlarged diameter portion 31 a of each first through hole 31 and a downstream end disposed above it. .
- the tube forming the air vent passage 38 is attached to a not shown form provided so as to close the enlarged diameter portion 31 a of the first through hole 31.
- the grout is pressed into from the grout injection passage 36, whereby the grout is inserted into the first bottomed holes 26 and the first through holes 31 from the gap between the first PC fixed beam 11A and the PC column 10.
- the air flows into the first bottomed hole 26 and the first through hole 31 while discharging the air from the air venting passages 37 and 38 connected thereto.
- the air venting passages 37, 38 from which the grout has flowed are closed, and when the grout flows into all the air venting passages 37, 38, the grout injection is finished.
- the first PC fixed beam 11A is rigidly connected to the PC column 10 by the filled grout.
- FIG. 9 is an enlarged cross-sectional view of a portion IX in FIG.
- the joint structure of the second PC fixed beam 12A and the PC column 10 shown in FIG. 2 and the joint structure of the second PC simple beam 12B and the PC column 10 are the first PC beam 11 and the PC column shown in FIGS. It is similar to the joint structure with 10.
- the PC pillar 10 is provided with a first support portion 13 for supporting the second PC fixed beam 12A slightly below the joint with the second PC fixed beam 12A.
- the second support portion 16 for supporting the second PC simple beam 12B is provided immediately below the joint with the second PC simple beam 12B.
- the second PC fixed beam 12A is provided with a plurality of second beam main bars 41 extending in the member axial direction, and extends along the second beam main bars 41 adjacent to the second beam main bars 41, and is an end face in the member axial direction
- the second bottomed hole 42 is formed in the opening.
- a second through hole 43 is formed in the PC pillar 10 so as to open at a position facing the second bottomed hole 42.
- a second reinforcing bar 44 similar to the first reinforcing bar 32 is inserted into the continuous second through hole 43 and the second bottomed hole 42 from the second through hole 43 side, and the second beam main bar is extended over a predetermined joint length L1. It is superimposed on 41.
- the second through holes 43 and the second bottomed holes 42 are filled with grout injected after the second reinforcing bars 44 are inserted.
- the lap portion overlapping the second beam main bar 41 is joined to the second beam main bar 41 by forming a second lap joint 45 (deep lap joint), and the head 44a does not have a fixing portion.
- the second PC fixed beam 12A is rigidly joined to the PC column 10 by the second reinforcing bar 44 and the grout filled around the second reinforcing bar 44 in the second through hole 43 and the second bottomed hole 42.
- the joint structure of the second PC simple beam 12B to the PC column 10 is also substantially the same as that of the first PC simple beam 11B.
- the second PC simple beam 12B and the second PC fixed beam 12A are not arranged adjacent to each other in the second direction Y. Therefore, the second support portion 16 does not interfere with the second through hole 43, and the second support portion 16 does not have to be formed at a lower position than the lower surface of the second PC simple beam 12B.
- the second PC simple beam 12B does not include the raised portion 17 like the first PC simple beam 11B (FIG. 3), and the lower surface is a flat surface.
- the other joint structure is the same as that of the first PC simple beam 11B, so the description will be omitted.
- FIG. 10 is an enlarged cross-sectional view of a portion X in FIG. 1 and shows a state of the installation in order to explain a method of fixing the upper PC pillar 10U to the lower PC pillar 10L.
- the column main bars 21 of the lower PC column 10L are provided in a straight line so as to project further upward from the top surface of the concrete.
- a vertical bottomed hole 51 opened on the lower surface is provided at a position corresponding to the column main reinforcement 21 of the lower PC column 10L.
- the column main reinforcement 21 of the upper PC column 10U is bent above the vertical bottomed hole 51 so as to avoid the vertical bottomed hole 51 in the same manner as the first beam main reinforcement 24 (FIGS. 3 and 4) of the first PC fixed beam 11A. Then, it is bent again and extends vertically along the vertical bottomed hole 51 adjacent to the vertical bottomed hole 51.
- the upper PC column 10U is suspended from above by a crane and disposed on the lower PC column 10L, so that the column main bars 21 of the lower PC column 10L are received inside the vertically bottomed hole 51, the lower side
- the column main bars 21 of the PC column 10L overlap the column main bars 21 of the upper PC column 10U over a predetermined joint length L2.
- a spacer (not shown) is arranged on the upper surface of the lower PC pillar 10L, and the upper PC pillar 10U is arranged to form a gap with the lower PC pillar 10L.
- the upper PC pillar 10U is formed with a grout injection passage 52 communicating with the gap between the upper PC pillar 10U and the lower PC pillar 10L via the lower part of one vertical bottomed hole 51, and each vertical bottomed hole A plurality of air venting passages 53 opening at the top of 51 are formed.
- a grate injection form 54 is disposed around the gap between the upper PC column 10U and the lower PC column 10L.
- the grout injected from the grout injection passage 52 is filled in the insides of the respective vertical bottomed holes 51 through the gap between the upper PC pillar 10U and the lower PC pillar 10L.
- the lap portion where the column main reinforcement 21 of the lower PC column 10L and the column main reinforcement 21 of the upper PC column 10U overlap forms the third lap joint 55 (open lap joint), and the lower PC column 10L
- the column main bars 21 and the column main bars 21 of the upper PC column 10U are joined together.
- FIG. 11 to FIG. 13 show the frame structure 1 under construction in the order of construction, and figures (A1, B1 to I1) to which "1" is added after the alphabets Shows a side view of the frame structure 1 corresponding to FIG. 1, and a figure (A2, B2... I2) with “2” appended after the alphabet shows a front view of the frame structure 1 corresponding to FIG. It shows.
- FIG. 11 (A) shows the side view and the front view.
- the lower PC pillar 10L is erected on the footing 5 in all of the rows A and B in the first to sixth rows. After the lower PC column 10L is built, a fall prevention measure 60 is applied as appropriate.
- the first PC beam 11 of the first stage is the first PC fixed beam 11A
- the first PC beam 11 of the second stage is the first PC simple beam 11B
- the first PC beam 11 of the third stage is the first PC fixed beam 11A.
- the second PC beam 12 of the first stage is a second PC fixed beam 12A
- the second PC beam 12 of the second stage is a second PC simple beam 12B.
- the first PC beams 11 of the first to third stages are sequentially arranged in pairs from the lower side to the lower side PC Cross over to pillar 10L. All of these first PC beams 11 are first PC simple beams 11B.
- the upper PC pillar 10U is built on the lower PC pillar 10L, and the lower PC pillar 10L is Bond to
- the first PC beam 11 of the fourth stage is the first PC simple beam 11B
- the first PC beam 11 of the fifth stage is the first PC fixed beam 11A
- the second PC beam 12 of the third stage is the second PC fixed beam 12A
- the second PC beam 12 of the fourth stage is the second PC simple beam 12B
- the second PC beam 12 of the fifth stage is the second PC fixed beam 12A. It is.
- the first PC beams 11 of the fourth and fifth stages are sequentially arranged from the lower side to a pair of upper PC pillars. Cross over to 10U. All of these first PC beams 11 are first PC simple beams 11B.
- the first PC beams of the first stage to the third stage are arranged in the A and B rows between the fourth and fifth rows and between the fifth and sixth rows. 11. Cross over the pair of lower PC columns 10L in order from the lower side. All of these first PC beams 11 are first PC simple beams 11B.
- the upper PC pillar 10U is built on the lower PC pillar 10L, and the lower PC pillar 10L is Join.
- the first PC beams of the fourth and fifth steps are used. 11, and the second PC beams 12 of the third to fifth stages in the fifth row and the sixth row between row A and row B in order from the lower row Cross over the upper PC column 10U.
- the first PC beams 11 are all the first PC simple beams 11B.
- the second PC beam 12 of the third stage is the second PC fixed beam 12A
- the second PC beam 12 of the fourth stage is the second PC simple beam 12B
- the second PC beam 12 of the third stage is the second PC fixed beam 12A. It is.
- both axial end portions of the first PC fixed beam 11A are inserted into the first bottomed hole 26 and jointed to the first main beam 24 via the first lap joint 33.
- it is rigidly connected to the pair of PC columns 10 by the first reinforcing bars 32 disposed in the first through holes 31 and the grout filled around the first reinforcing bars 32 in the first through holes 31. Therefore, the first PC fixed beam 11A can be arranged between the pair of PC columns 10 before the first reinforcing bar 32 is arranged, and the PC column 10 and the first PC fixed beam 11A can be arranged without horizontal movement along the main beam bars. It can be easily arranged. Further, as shown in FIGS. 11 to 13, the arrangement operation of the PC pillar 10 and the first PC fixed beam 11A can be advanced in an efficient procedure.
- the first bottomed hole 26 is formed adjacent to the first beam main bar 24 and extends along the first beam main bar 24, and the first beam main bar 24 is formed inside the first bottomed hole 26.
- a first lap joint 33 is constituted by the grout filled around the first reinforcing bar 32 at 26.
- the first support portion 13 for supporting the first PC fixing beam 11A is provided in the PC pillar 10, the first PC can be provided without providing temporary equipment such as a gantry for supporting the first PC fixing beam 11A.
- the work of joining the fixed beam 11A to the PC column 10 can be performed, and the work is easy.
- the first reinforcing bar 32 since the first reinforcing bar 32 has the head 32 a that bulges in the radial direction inside the first through hole 31, the cross-sectional dimension of the PC column 10 satisfies the dimension necessary for fixing the first reinforcing bar 32. Even if not, the first reinforcing bar 32 can be fixed to the PC column 10.
- both axial ends of the second PC fixed beam 12A are inserted into the second bottomed hole 42 and joined to the second beam main bar 41 through the second lap joint 45. It is rigidly connected to the pair of PC columns 10 by the second reinforcing bars 44 arranged in the second through holes 43 and the grout filled around the second reinforcing bars 44 in the second through holes 43. Therefore, not only in the first direction X but also in the second direction Y, the work of arranging the PC pillar 10 and the second PC fixed beam 12A can be facilitated, and the PC pillar 10 and the second PC fixed beam in an efficient procedure. 12A placement can proceed.
- the first PC fixing beam 11A and the second PC fixing beam 12A are rigidly connected to the PC column 10 at different heights. Therefore, the first through holes 31 and the second through holes 43 are disposed in a dispersed manner, and the deterioration in quality due to the filling failure of concrete or the like at the time of manufacturing the PC column 10 is prevented. In addition, it is possible to prevent the member dimensions from becoming large for securing the quality.
- the first PC fixed beam 11A and the first PC simple beam 11B are disposed adjacent to each other in the first direction X and in the vertical direction. Therefore, it is not necessary to make the beam-to-beam joint rigid connection for all of the first PC beams 11 aligned in the first direction X, and the material cost is further reduced, and the connection between the first reinforcing bars 32 and the first beam main bars 24 The assembling work is reduced and the assembling work is easier.
- the lower PC column 10L and the upper PC column 10U are each formed to have a length for supporting the plurality of first PC beams 11. Therefore, the number of PC pillars 10 is reduced, the overall manufacturing cost of the PC pillars 10 is reduced, and the assembling operation becomes easier.
- (1) Reinforcement 32 is inserted into the first through hole 31 and the first bottomed hole 26, and the lap portion disposed in the first bottomed hole 26 of the first reinforcement 32 is extended over the predetermined joint length L1 to the first beam main bar And grouting the first through hole 31 and the first bottomed hole 26 and joining the first reinforcing bar 32 to the first PC fixed beam 11A and fixing it to the PC pillar 10 .
- the PC column 10 and the first PC fixed beam 11A can be rigidly joined without using a mechanical joint member.
- the first PC fixing beam 11A can be arranged between the pair of PC columns 10 before the first reinforcing bar 32 is arranged, the arranging operation of the PC column 10 and the first PC fixing beam 11A is easy and efficient.
- the placement work of the PC pillar 10 and the first PC fixed beam 11A can be advanced in the procedure.
- FIG. 14 and 15 a second embodiment of the present invention will be described with reference to FIGS. 14 and 15.
- FIG. 14 and 15 The same members and portions as those in the first embodiment are denoted by the same reference numerals, and overlapping descriptions will be appropriately omitted.
- FIG. 14 is an enlarged side sectional view of the frame structure 1 and corresponds to FIG. 3 of the first embodiment.
- FIG. 15 is an enlarged plan sectional view of the frame structure 1 shown along the line XV-XV in FIG. 14, and corresponds to FIG. 4 of the first embodiment.
- the first beam main bars 24 linearly extend in parallel with the member axial direction of the first PC fixed beam 11A over the entire length in the axial direction, and the sleeve 71 is attached to the end thereof.
- the sleeve 71 has an axially extending inner hole, and a first beam main bar 24 inserted in approximately one half of the axial direction in the inner hole, and a first beam generally inserted in the other generally half of the inner hole It is a cylindrical member made of steel which constitutes a mechanical joint 72 joining together the 1 rebar 32.
- the sleeve 71 includes the first main beam bars 24 and the first reinforcing bars 32 respectively formed of deformed rebars in the inner hole, more specifically, around the first main beam bars 24 and the first reinforcing bars 32 in the inner holes. Hold by filled grout.
- a female screw is formed in the inner hole of the sleeve 71, and the male screw formed on each end of the first beam main reinforcement 24 and the first reinforcing bar 32 is screwed to the female screw, whereby the sleeve 71 is The main beam bar 24 and the first reinforcing bar 32 may be held, and further, the grout and the fixing nut may be used in combination, and the sleeve 71 may hold the first main beam bar 24 and the first reinforcing bar 32.
- the sleeve 71 is an axial end portion of the first beam main bar 24 on one side in the axial direction of the inner hole.
- the first PC fixing beam 11A On the other side in the axial direction of the inner hole, and the first bottomed hole 26 opened at the end face in the axial direction of the member is formed.
- the first PC fixing beam 11A is disposed between the pair of PC columns 10 such that the first bottomed hole 26 faces the first through hole 31.
- the first reinforcing bar 32 is inserted into the first through hole 31 and the first bottomed hole 26 from the first through hole 31 side, and the first PC fixed beam Grout is injected into the gap between the 11A and the PC column 10, whereby the first bottomed holes 26 and the first through holes 31 are filled with the grout.
- the same function and effect as those of the first embodiment can be obtained. That is, since the first PC fixed beam 11A can be arranged between the pair of PC columns 10 before the first reinforcing bar 32 is arranged, the PC column 10 and the first PC fixed beam 11A can be provided without horizontal movement along the main beam bars. Can be easily placed. Further, the work of arranging the PC pillar 10 and the first PC fixed beam 11A can be advanced in an efficient procedure as shown in FIGS. 11 to 13.
- the first bottomed hole 26 is formed by the sleeve 71 which holds the axial end of the first beam main bar 24, and the machine holds the axial end of the first beam main bar 24 by the sleeve 71.
- Formula joint 72 is configured. Therefore, the first reinforcing bar 32 is securely joined to the first beam main bar 24 by the mechanical joint 72.
- the present invention can be widely modified and implemented without being limited to the above embodiment.
- the frame structure 1 is applied to a pipe rack as an example, but it is naturally possible to apply to other structures.
- specific configurations and arrangements of each member and part, quantity, angle, construction procedure, and the like can be appropriately changed without departing from the scope of the present invention.
- not all of the components shown in the above embodiment are necessarily essential, and can be selected as appropriate.
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Abstract
Description
まず、図1~図13を参照して本発明の第1実施形態について説明する。図1は架構構造1の側面図を、図2は架構構造1の正面図をそれぞれ模式的に示している。本実施形態に係る架構構造1は、プラント施設に用いられるパイプラックの1ユニットを構成するものであり、プラント敷地内に複数のユニットが連続的に或いは交差するように設けられる。以下では、図1の紙面の左右方向を第1方向Xとし、図2の紙面の左右方向を第2方向Yとして、1ユニットの架構構造1について説明する。
次に、図14及び図15を参照して本発明の第2実施形態について説明する。第1実施形態と同様の部材や部位には同一の符号を付し、重複する説明は適宜省略する。
2 柱
3 第1梁
4 第2梁
10 PC柱
10L 下側PC柱
10U 上側PC柱
11 第1PC梁
11A 第1PC固定梁(両端固定梁)
11B 第1PC単純梁(単純梁)
12 第2PC梁
12A 第2PC固定梁
12B 第2PC単純梁
13 第1支持部(支持部)
24 第1梁主筋
26 第1有底孔
31 第1貫通孔
32 第1鉄筋
32a ヘッド(定着部)
33 第1重ね継手(第1継手)
41 第2梁主筋
42 第2有底孔
43 第2貫通孔
44 第2鉄筋
45 第2重ね継手(第2継手)
71 スリーブ(筒部材)
72 機械式継手(第1継手)
X 第1方向
Y 第2方向
Claims (11)
- 平面視において第1方向に並べられた複数のPC(プレキャストコンクリート)柱と、部材軸方向にそれぞれ延在する上端筋及び下端筋を含む第1梁主筋を有し、前記第1方向に互いに隣接する一対の前記PC柱に架け渡された少なくとも1つの第1PC梁とを備えた架構構造であって、
前記第1PC梁には、部材軸方向両端面に開口するように、前記第1梁主筋の端部に第1継手を形成するための第1有底孔が形成され、
前記一対の前記PC柱には、対応する前記第1有底孔に対向する位置に開口するように第1貫通孔が形成され、
前記第1PC梁の部材軸方向両端部が、前記第1有底孔に挿入され、前記第1継手を介して前記第1梁主筋に継ぎ合わされると共に前記第1貫通孔に配置された第1鉄筋と、前記第1貫通孔における前記第1鉄筋の周囲に充填されたグラウトとによって前記一対の前記PC柱に剛接合されたことを特徴とする架構構造。 - 前記第1有底孔が、前記第1梁主筋に隣接して当該第1梁主筋に沿って延びるように形成され、
前記第1梁主筋が、所定の継手長さにわたって前記第1鉄筋と重なる長さを有し、
前記第1継手が、前記第1鉄筋と重なる前記第1梁主筋の前記第1有底孔に挿入されたラップ部分と、前記第1有底孔における前記第1鉄筋の周囲に充填されたグラウトとにより構成される重ね継手であることを特徴とする請求項1に記載の架構構造。 - 前記第1有底孔が、前記第1梁主筋の軸方向端部を保持する筒部材によって形成され、
前記第1継手は、前記筒部材によって前記第1鉄筋の軸方向端部を保持するように構成された機械式継手であることを特徴とする請求項1に記載の架構構造。 - 前記第1鉄筋が、前記第1貫通孔の内部において径方向に膨出する定着部を有することを特徴とする請求項1~請求項3のいずれかに記載の架構構造。
- 前記PC柱には、前記第1PC梁を支持するための支持部が設けられたことを特徴とする請求項1~請求項4のいずれかに記載の架構構造。
- 前記PC柱が平面視で前記第1方向に交差する第2方向に複数列に並べられ、
部材軸方向にそれぞれ延在する上端筋及び下端筋を含む第2梁主筋を有し、前記第2方向に互いに隣接する一対の前記PC柱に架け渡された少なくとも1つの第2PC梁を更に備え、
前記第2PC梁には、部材軸方向両端面に開口するように、前記第2梁主筋の端部に第2継手を形成するための第2有底孔が形成され、
前記第2方向に互いに隣接する前記一対の前記PC柱には、前記第2有底孔に対向する位置に開口するように第2貫通孔が形成され、
前記第2PC梁の部材軸方向両端部が、前記第2有底孔に挿入され、前記第2継手を介して前記第2梁主筋に継ぎ合わされると共に前記第2貫通孔に配置された第2鉄筋と、前記第2貫通孔における前記第2鉄筋の周囲に充填されたグラウトとによって前記一対の前記PC柱に剛接合されたことを特徴とする請求項1~請求項5のいずれかに記載の架構構造。 - 前記第1PC梁と前記第2PC梁とが互いに異なる高さで前記PC柱に剛接合されたことを特徴とする請求項6に記載の架構構造。
- 前記PC柱が前記第1方向において少なくとも3列に並べられ、
前記第1PC梁の両端が前記第1方向に互いに隣接する一対の前記PC柱に剛接合する両端固定梁と、前記第1PC梁の両端が前記第1方向に互いに隣接する一対の前記PC柱にピン接合される単純梁とが、前記第1方向に互いに隣接して配置されたことを特徴とする請求項1~請求項7のいずれかに記載の架構構造。 - 前記第1PC梁が、前記第1方向に互いに隣接する一対の前記PC柱に対して高さ方向に異なる位置に複数段に架け渡され、
前記PC柱が、複数段の前記第1PC梁を支持する長さに形成されたことを特徴とする請求項1~請求項8のいずれかに記載の架構構造。 - 前記第1PC梁が、前記第1方向に互いに隣接する一対の前記PC柱に対して高さ方向に異なる位置に複数段に架け渡され、
前記第1PC梁の両端が前記第1方向に互いに隣接する一対の前記PC柱に剛接合する両端固定梁と、前記第1PC梁の両端が前記第1方向に互いに隣接する一対の前記PC柱にピン接合される単純梁とが、上下方向に互いに隣接して配置されたことを特徴とする請求項1~請求項9のいずれかに記載の架構構造。 - 複数のPC柱と、互いに隣接する一対の前記PC柱に剛接合される少なくとも1つの第1PC梁とを備えた架構構造の構築方法であって、
部材軸方向にそれぞれ延在する上端筋及び下端筋を含む第1梁主筋を有し、前記第1梁主筋の端部に第1継手を形成するための第1有底孔が部材軸方向両端面に開口するように形成された前記第1PC梁を用意するステップと、
第1貫通孔が側面に開口するように形成された前記PC柱を用意するステップと、
平面視における第1方向に並ぶように一対の前記PC柱を建て込むステップと、
前記第1有底孔が前記第1貫通孔に対向するように、前記第1PC梁を一対の前記PC柱の間に配置するステップと、
第1鉄筋を前記第1貫通孔及び前記第1有底孔に挿入し、前記第1継手を介して前記第1梁主筋に継ぎ合わせるステップと、
前記第1貫通孔にグラウトを注入し、前記第1鉄筋を前記PC柱に定着させるステップと
を含むことを特徴とする架構構造の構築方法。
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ES15898856T ES2794126T3 (es) | 2015-07-17 | 2015-12-04 | Estructura de armazón y método de construcción de la misma |
BR112018000785-4A BR112018000785B1 (pt) | 2015-07-17 | 2015-12-04 | Estrutura de quadro e método de construção de estrutura de quadro |
JP2016546868A JP6030274B1 (ja) | 2015-07-17 | 2015-12-04 | 架構構造及びその構築方法 |
SG11201710668WA SG11201710668WA (en) | 2015-07-17 | 2015-12-04 | Frame structure and method of constructing frame structure |
MX2018000633A MX2018000633A (es) | 2015-07-17 | 2015-12-04 | Estructura de armazon y metodo para construir la estructura de armazon. |
MYPI2017700774A MY187292A (en) | 2015-07-17 | 2015-12-04 | Frame structure and method of constructing frame structure |
EP15898856.8A EP3327214B1 (en) | 2015-07-17 | 2015-12-04 | Framework structure and construction method for same |
US15/573,995 US10465374B2 (en) | 2015-07-17 | 2015-12-04 | Frame structure and method of constructing frame structure |
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CN106906984A (zh) * | 2017-04-18 | 2017-06-30 | 江苏瑞永建设工程技术有限公司 | 一种预制装配式钢混框架电梯井结构及其施工方法 |
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JP6999294B2 (ja) | 2017-06-16 | 2022-01-18 | 株式会社安藤・間 | プレキャストコンクリート部材の接合方法および接合構造 |
CN114922364A (zh) * | 2022-04-24 | 2022-08-19 | 中建三局集团有限公司 | 一种可周转式悬挑防护棚 |
CN114922364B (zh) * | 2022-04-24 | 2023-09-08 | 中建三局集团有限公司 | 一种可周转式悬挑防护棚 |
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US10465374B2 (en) | 2019-11-05 |
PT3327214T (pt) | 2020-06-08 |
BR112018000785B1 (pt) | 2023-02-07 |
EP3327214A4 (en) | 2019-03-27 |
EP3327214A1 (en) | 2018-05-30 |
US20180291611A1 (en) | 2018-10-11 |
MX2018000633A (es) | 2018-09-06 |
ES2794126T3 (es) | 2020-11-17 |
PH12018500126A1 (en) | 2018-07-23 |
EP3327214B1 (en) | 2020-04-29 |
TW201704603A (zh) | 2017-02-01 |
SG11201710668WA (en) | 2018-02-27 |
TWI592546B (zh) | 2017-07-21 |
BR112018000785A2 (ja) | 2018-09-04 |
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