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21. 发明专利

JPH07229153A FOUNDATION STRUCTURE OF BUILDING STRUCTURE 失效
公开(公告)号：JPH07229153A
公开(公告)日：1995-08-29
申请号：JP2069094
申请日：1994-02-17
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： WAKITA EIJI , ISHII KIYOSHI , ONOE ATSUO
IPC分类号： E02D27/04 , E02D27/34
摘要： PURPOSE:To moderate the uneven settlement of a building structure with an easy construction by forming the bottom surface of the foundation part of a building in such a manner that the bottom wall is the deepest in the center part, and gradually shallowed toward the peripheral part to provide a basement within the foundation part. CONSTITUTION:A foundation 11 is formed of a floating foundation which is the deepest in the bottom wall 13a in the center part, and gradually shallowed stepwise toward the peripheral part as bottom walls 13b, 13c. Therefore, the buoyancy acting on the foundation 11 from the ground is the largest in the bottom surface 13a, and gradually reduced toward the bottom surfaces 13b, 13c. According to the buoyancy, the distribution of the supporting force of the foundation 11 is also set so as to be the highest in the bottom wall 13a and gradually reduced toward the bottom walls 13b, 13c. On the other hand, the load acting on the foundation 11 from a building 10 is set to be the maximum in the center part and small in the peripheral part. The buoyancy from the ground G acting on the foundation 11 is conformed to the distribution of the load from the building 10 to make the distribution of the vertical stress acting on the lower ground G more uniform than in the past.

22. 发明专利

JPH0216817B2 失效
公开(公告)号：JPH0216817B2
公开(公告)日：1990-04-18
申请号：JP21238584
申请日：1984-10-09
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： WAKITA EIJI
IPC分类号： E02D5/18 , E02D17/04 , E02D29/02

23. 发明专利

JP2001172987A PILE FOUNDATION STRUCTURE AND ITS CONSTRUCTION METHOD 失效
公开(公告)号：JP2001172987A
公开(公告)日：2001-06-26
申请号：JP35808499
申请日：1999-12-16
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： WAKITA EIJI
IPC分类号： E02D5/50 , E02D27/12 , E02D27/34
摘要： PROBLEM TO BE SOLVED: To provide a pile foundation structure capable of surely preventing the breakage of a pile body during a large earthquake and so as not to produce cost increase without increasing the modification of the specifications of the pile body and the number of the piles in this case. SOLUTION: A steel pipe 14 mounting a grout pipe in a drilled hole 13 installed in ground G is installed, a hard filler 17 is pressurized and injected between the lower end 14a of the steel pipe 14 and the ground G, and a soft filler 20 is injected between the outer peripheral part except for the lower end 14a of the steel pipe 14 and the ground G as compared with the hard filler 17.

24. 发明专利

JP2001164580A PILE FOUNDATION CONSTRUCTION 失效
公开(公告)号：JP2001164580A
公开(公告)日：2001-06-19
申请号：JP34818399
申请日：1999-12-07
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： WAKITA EIJI
IPC分类号： E02D27/12 , E02D27/34
摘要： PROBLEM TO BE SOLVED: To definitely support a horizontal force acting to a pile head portion during a great earthquake by maintaining a coupling state between the pile head portions of foundation piles and a foundation framing body almost to a pin connection (bending resistance is zero) regardless of an extent of the axial force. SOLUTION: A coupling hole 3 is formed on the bottom surface of the foundation framing body 1, and the pile head portion 4 of the foundation pile 2 is inserted to the inside of a coupling hole 3. Between the upper end wall 4a of the pile head portion of the foundation piles and the bottom wall 3a inside the upper end hole mutually facing each other, an elastic body 5 is interposed which is combined only with one wall 4a of the walls 4a, 3a opposite to each other and not combined with other wall 3a. Between the facing surfaces of the elastic body 5 at the non-combined side and the wall 3a, a slip plate 6 is interposed which permits the relative slide in the horizontal direction of the facing surfaces. Between the outer peripheral wall 4b of the pile head portion of the foundation pile and the inner peripheral wall 3b of the coupling hole, an elastic body 8 or a viscous body 9 is interposed which is coupled only to one of the peripheral wall 4b among the facing peripheral walls 4b, 3b and is not coupled to the other peripheral wall 3b.

25. 发明专利

JP2001073391A PILE-HEAD STRUCTURE 失效
公开(公告)号：JP2001073391A
公开(公告)日：2001-03-21
申请号：JP24810699
申请日：1999-09-02
申请人： SHIMIZU CONSTRUCTION CO LTD , KUBOTA KK
发明人： TAKURA TAKASHI , OTSUKI AKIRA , SATO MASAYOSHI , WAKITA EIJI , MANO HIDEYUKI , IWAMOTO TOSHIYUKI , ARAKAWA NORIYUKI , OKAWA MASAYUKI
IPC分类号： E02D5/22 , E02D27/12 , E02D27/34 , E04H9/02
摘要： PROBLEM TO BE SOLVED: To prevent generation of large bending moment in a foundation pile, while obviating the separation by floating of the foundation pile and an upper structure by vertical vibrations by expecting rigid-coupling strength between the foundation pile and the upper structure to small-to-medium scale earthquakes while a slip is generated on a contact interface between the foundation pile and the upper structure to a large-scale earthquake. SOLUTION: An upper spherical member 4 on the upper structure side, having a spherical surface 4a receiving the spherical surface 2a of a foundation-side spherical member 2, is superposed to the foundation-side spherical member 2 installed to the pile head 1a of a foundation pile 1. The upper spherical member 4 is connected at every proper interval in the peripheral direction, by connecting members 6 longer than a distance between opposite faces in a periphery to the foundation-side spherical member 2.

26. 发明专利

JP2001073389A PILE-HEAD STRUCTURE 失效
公开(公告)号：JP2001073389A
公开(公告)日：2001-03-21
申请号：JP24810599
申请日：1999-09-02
申请人： SHIMIZU CONSTRUCTION CO LTD , KUBOTA KK
发明人： TAKURA TAKASHI , OTSUKI AKIRA , SATO MASAYOSHI , WAKITA EIJI , MANO HIDEYUKI , IWAMOTO TOSHIYUKI , ARAKAWA NORIYUKI , OKAWA MASAYUKI
IPC分类号： E02D27/12 , E02D27/34
摘要： PROBLEM TO BE SOLVED: To prevent generation of large bending moment in a foundation pile by expecting rigid-coupling strength between the foundation pile and an upper structure to small-to-medium scale earthquakes, while a slippage is generated on a contact interface between the foundation pile and the upper structure for a large-scale earthquake. SOLUTION: A pile-head structure is composed of a pile head member 2, in which an end face 2d in which the center side 2b is formed high to a central axis 2a and the peripheral side 2c is formed low, and a structure support member 4 arranged opposite to the pile head member 2 and having a peripheral wall 4b accepting the top face 2d of the pile head member, while limiting movement in the cross direction at a fixed value or more in an outer periphery. The structure support member 4 installed to an upper structure 3 is superposed vertically onto the pile head member 2 mounted on a pile head 1a then.

27. 发明专利

JP2001073388A PILE-HEAD STRUCTURE 失效
公开(公告)号：JP2001073388A
公开(公告)日：2001-03-21
申请号：JP24810499
申请日：1999-09-02
申请人： SHIMIZU CONSTRUCTION CO LTD , KUBOTA KK
发明人： TAKURA TAKASHI , OTSUKI AKIRA , SATO MASAYOSHI , WAKITA EIJI , MANO HIDEYUKI , IWAMOTO TOSHIYUKI , ARAKAWA NORIYUKI , OKAWA MASAYUKI
IPC分类号： E02D27/12 , E02D27/34
摘要： PROBLEM TO BE SOLVED: To prevent generation of large bending moment in a foundation pile by expecting rigid-coupling strength between the foundation pile and an upper structure to small-to-medium-scale earthquakes, while a slippage is generated on the contact interface of the foundation pile and the upper structure to a large-scale earthquake. SOLUTION: The joint structure of a pile head is composed of a tabular cradle 2 horizontally fixed to the pile head 1a, a sliding plate 4 installed onto the cradle 2 and fixed onto an upper structure 3, an engaging section 4a limiting a sliding range at a fixed value between the cradle 2 and the sliding plate 4 and a stopper pin 6 fixing the cradle 2 and the sliding plate 4 at initial positions and having rupture strength at a fixed value or smaller.

28. 发明专利

JPH10273917A UNIFORMING METHOD OF DEFORMATION CHARACTERISTICS OF DIFFERENT KINDS OF PILES AND STRUCTURE PROVIDED WITH DIFFERENT KINDS OF PILES 失效
公开(公告)号：JPH10273917A
公开(公告)日：1998-10-13
申请号：JP8042397
申请日：1997-03-31
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： WAKITA EIJI
IPC分类号： E02D27/12
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of unequal sinking in a structure in which different kinds of piles are mixed and used and imbalance of pile stress by intervening a member which uniformalize deformation characteristics of a foundation pile between the foundation pile and a foundation base plate. SOLUTION: One kind of foundation pile 7 provided on the assumption that support conditions of a building are the same is used as a reference pile. Deformation characteristic adjusting materials 15, 16 intervened between a foundation base plate 6 of the building and a foundation pile 8 are adjusted in such a manner that the displacement of the foundation pile 8 having the deformation characteristic adjusting materials 15, 16 approximates to the displacement of the reference pile based on a difference between a displacement assumed value assumed from reference pile deformation characteristics when the reference pile receives load from the building the a displacement assumed value assumed from foundation pile deformation characteristics when the foundation pile 8 other than the reference pile receives the same load.

29. 发明专利

JPH09256388A PILE FOUNDATION STRUCTURE AND EXECUTION METHOD OF PILE FOUNDATION STRUCTURE 失效
公开(公告)号：JPH09256388A
公开(公告)日：1997-09-30
申请号：JP6884396
申请日：1996-03-25
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： WAKITA EIJI
IPC分类号： E02D27/12
摘要： PROBLEM TO BE SOLVED: To decrease the number and weight of new piles, and to reduce the quantity of existing piles abandoned by installing a fluid layer consisting of a fluid and supporting a building frame while having fluidity under the building frame and supporting the building frame through the fluid layer by the piles and the upper section of the ground. SOLUTION: When the load of a building frame 40 is applied distortedly to piles 10 by land subsidence, etc., the internal pressure of pile upper sections as the upper sections of pile head sections 11 in a fluid layer 30 is made higher than that of a lightweight-body upper section as the upper section of a lightweight body 20. Consequently, the fluid body in the pile upper sections is moved towards the lightweight-body upper section owing to the pressure difference. Gravity works by the positioning of the pile upper sections at places higher than the lightweight-body upper section in addition to pressure difference, and the fluid body is moved smoothly and quickly. Accordingly, since the internal pressure of the pile upper sections is lowered and the internal pressure of the lightweight-body upper section is increased, the internal pressure of the pile upper sections and the lightweight-body upper section is levelled rapidly. The levelling is generated at all times in a moment when the load of the building frame 40 is applied uneven to the piles 10.

30. 发明专利

JPH09256387A PILE FOOTING CONSTRUCTION 失效
公开(公告)号：JPH09256387A
公开(公告)日：1997-09-30
申请号：JP6501096
申请日：1996-03-21
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： WAKITA EIJI
IPC分类号： E02D27/12
摘要： PROBLEM TO BE SOLVED: To provide a pile footing construction capable of reducing the number of piles or pile weight. SOLUTION: This pile footing construction is provided with a skeleton 10 borne on the upperpart of a ground G and a pile 20, the skeleton 10 is provided with a hole 13 opened downward, a pile heat 21 is placed in the hole 13, and thermal expansion materials 30 expanding at higher temperature than cold temperature are circumferentially provided between the pile head 21 and the interior circumferential wall 13a in the hole 13. The pile head 21 and hole 13 are provided in a state of relative displacement at cold temperature, and the upper part of the pile head 21 in the hole 13 is filled with fluid 40.

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