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81. 发明专利

JPH09217429A CORROSION-PROOF INSERT TOOL BODY AND PRODUCTION METHOD THEREOF 失效
公开(公告)号：JPH09217429A
公开(公告)日：1997-08-19
申请号：JP2747696
申请日：1996-02-15
申请人： MEIDENSHA ELECTRIC MFG CO LTD , SUMIKEN CONCRETE KOGYO KK , IWANAMI CONSULTING KK , FUOWAADE KK , MEIDEN CHEM KK
发明人： OGITA KIYOBUMI , KONDO JIRO , IWANAMI TSUNEO , MASUO MASAJIRO , CHIBA TAKEO
IPC分类号： E04B1/41
摘要： PROBLEM TO BE SOLVED: To arrange various members and increase the fitting strength, by embedding an insert element in a base material and coaxially arranging an insertion hole for a fixing tool against a fixing hole, from the surface of the base material to the fixing hole of the insert element. SOLUTION: An insert element 1 fitted to the front end of a guide rod is inserted in a hole of a mold and a solidifying filler is charged in the hole and cured therein to form the element 1 in a base material 5. These are removed from the mold and the guide rod is removed to form a corrosion-proof insert tool body 6 and fix it in an existing concrete structure with an adhesive. In this case, when the element body is made of a ceramic, the pulling strength and the shearing force of the fixing hole 1a are increased. And when the element 1 is fixed to the base material 5 with an adhesive and an epoxy resin having a larger strength than concrete is used for the solidifying filler, an inexpensive, light-weight, and larger fitting strength element body can be obtained and if a collar is set on the guide rod, the element can be positioned when the guide rod is inserted in the hole.

82. 发明专利

JPH09217428A CORROSION PROOF INSERT TOOL AND ITS FORMATION 失效
公开(公告)号：JPH09217428A
公开(公告)日：1997-08-19
申请号：JP2747596
申请日：1996-02-15
申请人： MEIDENSHA ELECTRIC MFG CO LTD , SUMIKEN CONCRETE KOGYO KK , IWANAMI CONSULTING KK , FUOWAADE KK
发明人： OGITA KIYOBUMI , KONDO JIRO , IWANAMI TSUNEO , MASUO MASAJIRO
IPC分类号： E04B1/41
摘要： PROBLEM TO BE SOLVED: To increase the fitting strength, by embedding an insert element in a hole provided in a concrete structure with a solidifying filler and inserting a fixing tool from the furface of the solidifying filler into the insertion hole for the element and fixing it therein. SOLUTION: An insert element 1 fitted to the front end of a guide rod is inserted in a hole 3a of a concrete structure 3 and a solidifying filler 4 is charged in the space of the hole 3a and solidified. Then, the guide rod is removed to embed the element 1 in the structure 3. And hence, the insert element is newly embedded in an existing concrete structure 3 and various members can be fitted to the structure. And when the element 1 is made of ceramics and the solidifying filler 4 is made of epoxy resin having a higher strength than concrete, the fitting strength gets larger. And further, if a collar is set on the guide rod, the element 1 can be positioned when the guide rod is inserted in the hole 3a of the structure 3.

83. 发明专利

JPH09170257A FLEXIBLE COUPLING STRUCTURE IN BOX CULVERT FOR JACKING METHOD 失效
公开(公告)号：JPH09170257A
公开(公告)日：1997-06-30
申请号：JP33175195
申请日：1995-12-20
申请人： SUMIKEN CONCRETE KOGYO KK
发明人： HIROSE YUICHI , UETAKE KATSUTOSHI
IPC分类号： E02D29/073 , E03F3/04 , E21D9/06
摘要： PROBLEM TO BE SOLVED: To provide a jacking method which can lay box culverts even though a coupling part is flexible. SOLUTION: A propulsion force transmitting rubber material 3 is interposed between coupling surfaces 2a of box culverts to be coupled together, surrounding the outer peripheral surface. Further, a meandering preventing fitting which is stretched between the inner surfaces of both box culverts 2 and which can set these box culverts in a temporarily rigid condition, is temporarily laid. The rubber material 3 can restrain the degree of expansion and contraction effected in a flexible coupling part by a propulsion force during propulsion, and disperses a support pressure so that the propulsion force can be transmitted without being hindered by the coupling part. Further, a propulsion support fitting can prevent the flexible coupling part from being distorted, and being vertically or horizontally displaced. With this arrangement, the transmission of the propulsion force can not be hindered and meandering can be prevented even though the coupling parts of the box culverts 2 are flexible, thereby it is possible to use a propulsion process as a process of laying the box-culverts.

84. 发明专利

JPH09132935A CONCRETE SECONDARY PRODUCT CONNECTING METHOD AND DEVICE THEREOF 失效
公开(公告)号：JPH09132935A
公开(公告)日：1997-05-20
申请号：JP28972595
申请日：1995-11-08
申请人： SUMIKEN CONCRETE KOGYO KK
发明人： KONDO JIRO , YANAKA HISAYUKI
IPC分类号： E03F3/04 , E01D1/00 , E01D2/00 , E01D101/26 , E04B1/41
摘要： PROBLEM TO BE SOLVED: To simply bring the opposite concrete secondary products into face contact connection to each other at a site or the like. SOLUTION: To the one end of a reinforcing and connecting shaft 18 that is to be penetratedly embedded in a prescribed position in the longitudinal direction of a concrete secondary product, the rear part of a cylindrical female connecting body 5 that is to be embedded on one side end surface is connected; and to the other end of the reinforcing and connecting shaft 18, a cylindrical male connecting body 12 that is to be embedded on the other side end surface is directly connected, or it is arranged so as to be fitted at the time of connecting work when it is connected to the other concrete secondary product; and the projected taper shaft part 7 of the male connecting body 12 is fitted in the connecting inner taper part 2 of the opposite concrete secondary product female connecting body 5. Further, at least one engaging claw 11 capable of being intruded in the inside through an elastic body laterally projected around the taper shaft part 7 is locked with the projection that has been provided to the claw-receiving stepped groove 4 on the inner taper side, so that the opposite concrete secondary products are brought into face contact connection to each other.

85. 发明专利

JPH06210615A MANUFACTURE OF CONCRETE STRUCTURE 失效
公开(公告)号：JPH06210615A
公开(公告)日：1994-08-02
申请号：JP789093
申请日：1993-01-20
申请人： SUMIKEN CONCRETE KOGYO KK
发明人： KIJIMA YUICHI
IPC分类号： B28B7/10 , B28B13/06 , B28B23/06
摘要： PURPOSE:To make it possible to manufacture concrete structure, by which high strength is revealed, at favorable production efficiency under the condition that high productivity is maintained by a method wherein forms, between which two concrete molding spaces are present, are formed and reinforcing bars are placed therein and, after concrete is cast, compacted, by vibration and cured, pre-stresss is introduced in the reinforcing bars. CONSTITUTION:Two sets of two per set of PC steel materials 7 are placed horizontally in parallel and tensed. Further, by mounting a circular crosssectional inner form 3 and partition forms 4, which vertically extend above and below the inner form along the center line, bisect the two sets of PC steel materials. Stirrups are assembled on both the side of the inner form 3 and of the partition forms 4 and furthermore form members 1 and 1 are mounted to the stirrups so as to form an outer form 2 in order to produce a form 6 having two concrete molding spaces 5 and 5 between the inner and outer forms 3 and 2. Concrete is cast in the molding spaces 5 and 5, compacted by vibrating a supporting cradle and cured. After the curing of the concrete, the tensing of the PC steel materials 7 is started so as to introduce pre-stress in the molded concrete structure.

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