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1. 发明专利

JP2002275927A METHOD FOR STRENGTHENING REINFORCED CONCRETE STRUCTURE, AND ADDITIONALLY STRENGTHENED REINFORCED CONCRETE STRUCTURE 失效
公开(公告)号：JP2002275927A
公开(公告)日：2002-09-25
申请号：JP2001070193
申请日：2001-03-13
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： SHIOYA TOSHIYUKI , KONO YASUNAO
IPC分类号： E02D37/00 , E01D19/02 , E01D21/00 , E01D22/00 , E01D101/00 , E04G23/02
摘要： PROBLEM TO BE SOLVED: To provide a method for strengthening a reinforced concrete structure, which is easily carried out at a low cost, can execute strengthening work in a possible minimum working space, and does not upsize a strengthened foundation per se after the work, and to provide an additionally strengthened reinforced concrete structure. SOLUTION: The additionally strengthened reinforced concrete structure 100 is obtained by shearing and strengthening an existing reinforced concrete structure. The structure 100 is comprised of a plurality of holes 102 having a predetermined depth, rod-type strengthening members 103, and a self-curing filler 104. The holes 102 are drilled in the reinforced concrete structure almost in the vertical direction, at locations at least corresponding to shearing stress generating portions. The rod-type strengthening members 103 are inserted into the respective holes 102. The self-curing filler 104 is filled in the respective holes 102.

2. 发明专利

JP2002004271A COMPOSITE PILE AND EXECUTION METHOD THEREFOR 失效
公开(公告)号：JP2002004271A
公开(公告)日：2002-01-09
申请号：JP2000192715
申请日：2000-06-27
申请人： SHIMIZU CONSTRUCTION CO LTD , KAWASAKI STEEL CO , NIPPON KOKAN KK , OHBAYASHI CORP
发明人： KAZAMA HIROSHI , SHIOYA TOSHIYUKI , OOKUBO HIROHISA , MITANI YASUSHI , KATSUYA MASAHIKO , NANBU TOSHIHIKO , SATO MINEO , TOMOISHI KENJI
IPC分类号： E02D5/30
摘要： PROBLEM TO BE SOLVED: To obtain a sufficient strength and a bearing force in a joint part of a composite pile composed of cast-in-place piles and steel pipe piles. SOLUTION: In a composite pile in which an upper pile formed of a steel pipe pile 20 and a lower pile formed of a cast-in-place concrete pile 10 are vertically connected at a joint part, the joint part is arranged so that a joint steel pipe 30 spliced at the upper end of main reinforcements 11 arranged in the cast-in-placed concrete pile 10 overlaps with the steel pipe pile 20 and the cast-in-place concrete pile 10 respectively and a cement hardener is filled in between the outer peripheral face of the joint steel pipe 30 and the inner peripheral face of the steel pipe pile 20.

3. 发明专利

JP2000291134A JOINT STRUCTURE OF PRECAST MEMBER 失效
公开(公告)号：JP2000291134A
公开(公告)日：2000-10-17
申请号：JP9554099
申请日：1999-04-01
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： KANEKO YOSHIO , KURITA MORIAKI , SHIOYA TOSHIYUKI
IPC分类号： E04B1/04 , E04B1/21
摘要： PROBLEM TO BE SOLVED: To improve the strength of a joint part and a structure by filling a space between precast members with the fiber reinforced hardening material for bonding in the joint structure formed of precast members such as pillars, beams and walls made of the precast concrete. SOLUTION: Each joining surface of a pillar 1 and a beam 2 respectively made of the precast concrete is formed with a recessed part 3 with the predetermined space so as to form a rugged surface 4 (irregularity). Both the joining surfaces formed with the rugged surface 4 are faced to each other with the predetermined space, and a space between them is filled with the filling material (fiber reinforced hardening material) 5 for joining. Furthermore, a pre-stress steel bar 6 is arranged so as to pass through the pillar 1 and the beam 2, and a fixing tool 7 is fixed to the ends thereof, and the predetermined precast is led in. With this structure, weight of a structure such as a pillar, a beam and a wall formed of the precast member can be reduced, and proof stress and durability thereof are improved.

4. 发明专利

JPH10231519A PILE STRUCTURE 失效
公开(公告)号：JPH10231519A
公开(公告)日：1998-09-02
申请号：JP3410197
申请日：1997-02-18
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： KATSURA YUTAKA , YOSHIMI YOSHIAKI , SHIOYA TOSHIYUKI , GOTO SHIGERU , SAKAMOTO SHINICHI , SATO MASAYOSHI , SHAMOTO YASUHIRO
IPC分类号： E02D5/48 , E02D5/22
摘要： PROBLEM TO BE SOLVED: To prevent damage by providing a pile with a hinge part deformed with smaller force than other parts, near a boundary between a liquefied layer and a nonliquefied layer of the ground. SOLUTION: A pile 10 is provided with hinge parts 11 at a pile head part and an intermediate part positioned near a boundary between a liquefied layer and a nonliquefied layer. The hinge is formed to be smaller in diameter than the other part of the pile 10 and formed of material low in strength and rigidity. In case of the liquefied layer flowing sideways due to an earthquake or the like, the pile is deformed being bent at the hinges 11. At this time, horizontal resistance of the liquefied layer is close to zero, and influence based on inertial force of a structure precedes the displacement of the pile 10 caused by sideway flow of the liquefied layer, stress acting upon the pile 10 between the hinges becomes zero, so that places other than the hinges 11 do not bend. The pile 10 can therefore be prevented from being damaged while being deformed following the deformation of the liquefied layer, and vertical load supporting function is ensured to hold pile function. The damage of the pile can be prevented without increasing pile strength, and cost can be reduced.

5. 发明专利

JP2000303621A PRECAST MEMBER AND STRUCTURAL MEMBER USING THE SAME 失效
公开(公告)号：JP2000303621A
公开(公告)日：2000-10-31
申请号：JP11423699
申请日：1999-04-21
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： KANEKO YOSHIO , KURITA MORIAKI , SHIOYA TOSHIYUKI
IPC分类号： E04B2/02 , E04C3/26
摘要： PROBLEM TO BE SOLVED: To improve workability by forming a block-shaped precast member while using a fiber reinforced cured material including reinforcing fiber and a reinforcing wire material. SOLUTION: An engaging projection 3 and an engaging recess 4 are formed at both end connection faces of a block-shaped precast member 2 and the projections 3 and the recesses 4 of a plurality of precast members 2 are fitted to and connected to each other to constitute a structural member such as a beam 1 or the like. The precast member 2 is formed of a fiber reinforced cured material such as fiber reinforced mortar/concrete or the like for instance. Tendons 5 are inserted in the beam 1 and an anchor member is fixed to both ends to introduce a prestress in the beam 1. In this way, the weight of the beam can be reduced and the strength and durability can be improved and further, workability of transportation, slinging, positioning, fitting, etc., can greatly be improved. The cost can be reduced. It can be adapted for a long span beam or the like due to prestressing.

6. 发明专利

JP2000291137A JOINING STRUCTURE OF STEEL PILLAR AND BEAM 失效
公开(公告)号：JP2000291137A
公开(公告)日：2000-10-17
申请号：JP9553699
申请日：1999-04-01
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： KANEKO YOSHIO , KURITA MORIAKI , SHIOYA TOSHIYUKI
IPC分类号： E04B1/24 , E04B1/58
摘要： PROBLEM TO BE SOLVED: To facilitate the joining of a steel pillar and a steel beam while obtaining high joining strength so as to secure the vibration resistance by joining the steel pillar and the steel beam through a fiber reinforced hardening member. SOLUTION: A side surface of a pillar (steel pillar) 1 is provided with a pair of two side plates 3, 3 made of H-type steel so as to be extended in parallel with a steel beam 2 to be joined with them. A bottom plate 4 is fitted between the pair of side plates 3, 3 having the same height with that of the steel beam 2, and these side plates 3, 3 and the bottom plate 4 form a bracket 5 having a nearly U-shaped cross section. An end of the steel beam 2 is placed inside of the bracket 5, and the bracket 5 and the steel beam 2 are overlapped with each other over the predetermined length. Inside of the bracket 5 is filled with the filling material (fiber reinforced hardening material) 6, and the pillar 1 and the steel beam 2 are integrally joined with each other through the bracket 5 and the filling material 6. With this structure, fixing strength of joining can be improved, and weight of the joining part of the steel pillar and the steel beam is reduced, and proof stress and durability at the joining part is improved.

7. 发明专利

JPH11264190A JOINT CONSTRUCTION FOR CONCRETE-FILLED STEEL PIPE COLUMN 失效
公开(公告)号：JPH11264190A
公开(公告)日：1999-09-28
申请号：JP6739498
申请日：1998-03-17
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： SHIOKAWA HIDEYO , KATSUSAWA KATSUE , SHIOYA TOSHIYUKI , SATO TAKANORI
IPC分类号： E04B1/30 , E04B1/58
摘要： PROBLEM TO BE SOLVED: To provide a joint construction for a concrete-filled steel pipe column which can be connected to a reinforced concrete beam thereby reducing the cost compared with the case of connecting to a beam of SRC structure. SOLUTION: At the column head portion 1a of a concrete-filled steel pipe column 1, the main reinforcement 25 is arranged in such a manner that its lower end portion 25a is embedded in the filled concrete and the upper end portion 25b is projected from the column head portion 1a. And concrete C is poured to the upper end portion 25b of the main reinforcement 25 thereby forming a structural body 27 and a beam 23 is jointed to the structural body 27.

8. 发明专利

JPH09317202A REINFORCEMENT STRUCTURE OF COLUMN 失效
公开(公告)号：JPH09317202A
公开(公告)日：1997-12-09
申请号：JP14053996
申请日：1996-06-03
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： SATO TAKANORI , SHIOYA TOSHIYUKI
IPC分类号： E04B1/30 , E04G23/02
摘要： PROBLEM TO BE SOLVED: To increase the reinforcement effect by the ring tension effect by surrounding the outer circumference of an existing column of rectangular section made of reinforced concrete by a steel tube of elliptical section, filling the filler inside thereof, and solidifying it to control expansion of the dimension of the column. SOLUTION: The outer circumference of a column 11 is surrounded by a steel tube 22 of elliptical section in order to reinforce the existing column 11 of rectangular section made of reinforced concrete, and mortar 14 is filled in a space between the column 11 and the steel tube 22 of elliptical section, and solidified. The steel tube 22 of elliptical section is split into a plurality of sections in the longitudinal direction, a joining part 23 is welded, a flange is provided on the joining part 23, and tightened by bolts and nuts. In a case of a flange, expansion of dimensions in the shorter axial direction is controlled by providing the flange in the longer axial direction of the ellipse. By using the steel tube 22 of elliptical section, dimensional expansion in the shorter axial direction caused by reinforcement is controlled, and the reinforcement effect is increased by the ring tension effect of the steel tube 22 of elliptical section.

9. 发明专利

JPH09316893A CONNECTION STRUCTURE FOR GROUP PILE AND FILLED STEEL PIPE CONCRETE COLUMN 失效
公开(公告)号：JPH09316893A
公开(公告)日：1997-12-09
申请号：JP14053896
申请日：1996-06-03
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： SATO TAKANORI , SHIOYA TOSHIYUKI
IPC分类号： E02D27/12 , E01D19/02 , E02D27/14 , E02D27/32 , E04B1/30 , E04B1/58
摘要： PROBLEM TO BE SOLVED: To omit a foundation beam on a group pile. SOLUTION: In a connection structure for a group pile to a filled steel pipe concrete column, a filled steel pipe concrete column 10 comprising concrete 12 filled into a steel pipe 11 is provided to stand on a group pile 1 placed in the ground. In this case, a lower end of the steel pipe 11 for composing the charged steel pipe concrete column 10 is inserted into/engaged with an upper end of the group pile 1, and the concrete 12 is charged into the steel pipe 11 to be solidified, thereby the concrete 12 is connected to the group pile 1.

10. 发明专利

JPS6463139A COMPOSITE MEMBER 失效
公开(公告)号：JPS6463139A
公开(公告)日：1989-03-09
申请号：JP22091187
申请日：1987-09-03
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： MATSUMOTO MANABU , ONO FUMIYOSHI , SHIOYA TOSHIYUKI , OKADA TAKEJI , HASEGAWA TOSHIAKI , UCHIDA YUICHI , NAGASAWA YASUNORI , NAGAISHI YUTAKA
IPC分类号： B32B7/02 , B28B23/04 , B32B13/06 , E02B17/00 , G21C13/00
摘要： PURPOSE:To hardly generate cracks in concrete when an external force is applied to a composite member and to improve the shearing strength of the concrete by applying a tensile strength to upper and lower steel plates of a steel shell and a compression force to the inner concrete. CONSTITUTION:When a composite member made by filling concrete 4 in a steel shell formed of upper and lower steel plates 2, 3 is manufactured, a tensile strength is applied to the plates 2, 3, and a compression force is applied to the inner concrete 4. As a result, even if an external force is applied to the member, the concrete 4 is scarcely cracked to improve the shearing strength of the concrete 4. Further, the plates 2, 3 of the side in which the concrete 4 is compressed are hardly buckled to obtain a large toughness. Accordingly, the composite member can be reduced in thickness and weight.

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