JP7431705B2 - Joint structure of steel shell elements and its construction method - Google Patents
Joint structure of steel shell elements and its construction method Download PDFInfo
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- JP7431705B2 JP7431705B2 JP2020148966A JP2020148966A JP7431705B2 JP 7431705 B2 JP7431705 B2 JP 7431705B2 JP 2020148966 A JP2020148966 A JP 2020148966A JP 2020148966 A JP2020148966 A JP 2020148966A JP 7431705 B2 JP7431705 B2 JP 7431705B2
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- 229910000831 Steel Inorganic materials 0.000 title claims description 221
- 239000010959 steel Substances 0.000 title claims description 221
- 238000010276 construction Methods 0.000 title claims description 18
- 230000003014 reinforcing effect Effects 0.000 claims description 69
- 238000000034 method Methods 0.000 claims description 9
- 239000012779 reinforcing material Substances 0.000 claims description 9
- 238000003780 insertion Methods 0.000 description 11
- 230000037431 insertion Effects 0.000 description 11
- 238000012856 packing Methods 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
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Description
本発明は、非開削工法により地下構造物を構築する際に用いる鋼殻エレメントの接合構造及びその施工方法に関する。 The present invention relates to a joint structure for steel shell elements used when constructing an underground structure using a trenchless construction method, and a method for constructing the same.
地下構造物を構築する際に、地上での交通規制が不要であり、周辺地盤への影響も少ない非開削工法を採用することがある。
非開削工法としては、一側に凹継手を有し、他側に凸継手を有する中空の鋼殻エレメントを、継手を繋ぎ合わせながら推進工法により地中に並設して鋼殻構造体を形成し、鋼殻エレメント内にコンクリートを打設して外殻躯体を形成し、その後、外殻躯体で囲まれた内側を掘削して地下構造物を構築する方法がある。
When constructing underground structures, trenchless construction methods are sometimes used, as they do not require traffic control above ground and have little impact on the surrounding ground.
As a trenchless construction method, hollow steel shell elements with a concave joint on one side and a convex joint on the other side are installed side by side underground using the propulsion method while connecting the joints to form a steel shell structure. However, there is a method in which an outer shell is formed by pouring concrete into a steel shell element, and then the inside surrounded by the outer shell is excavated to construct an underground structure.
しかし、このような工法は、隣接する鋼殻エレメント間に引張力が加わると、継手が外れて隣接する鋼殻エレメントどうしが離れる恐れがある。この結果、鋼殻構造体や外殻躯体の構造に支障をきたし、地下構造物の内部に地下水が侵入する等の重大な事態が発生しかねない。 However, in such a construction method, if a tensile force is applied between adjacent steel shell elements, there is a risk that the joint will come off and the adjacent steel shell elements will separate. As a result, the structure of the steel shell structure and the outer shell frame may be affected, and serious situations such as groundwater intrusion into the interior of the underground structure may occur.
そこで、従来、凹継手の溝部内に内周面両側から突出する係止部を形成し、凸継手の先端に両側へ突出する突起部を設けた鋼殻エレメントの継手構造が、例えば、特許文献１として提案されている。
上記特許文献１に記載の鋼殻エレメントの継手構造は、隣接する鋼殻エレメント間に引張力が加わっても、突起部が係止部に係合して凸継手が凹継手から抜け出すことがなく、隣接する鋼殻エレメントが離れるのを防ぐことができる。
Therefore, conventionally, a joint structure of a steel shell element in which a locking part protruding from both sides of the inner peripheral surface is formed in the groove of a concave joint, and a protrusion part protruding to both sides at the tip of a convex joint has been proposed, for example, in Patent Document It is proposed as 1.
In the steel shell element joint structure described in Patent Document 1, even if a tensile force is applied between adjacent steel shell elements, the protrusion engages with the locking part and the convex joint does not slip out of the concave joint. , can prevent adjacent steel shell elements from separating.
上記特許文献１に記載のような鋼殻エレメントの継手構造は、施工による隣接する鋼殻エレメント間の位置関係が、凸継手と凹継手との係合可能な許容範囲を超えると、凸継手の突起部が凹継手の係止部にぶつかってしまうため凸継手を凹継手へ差し込むことができず、特に位置関係が大きくなりやすい閉合エレメントを設置する部分では、凸継手の先端の突起部を省略せざるを得ない場合があった。そのような場合、凸継手の突起部と凹継手の係止部との係合による抜け止め機能を発揮することができず、隣接する鋼殻エレメント間に引張力が作用した際には、鋼殻エレメントによる分離を防止することはできなくなる。
本発明が解決しようとする課題は、鋼殻エレメントの施工誤差を吸収できるとともに、隣接する鋼殻エレメント間に引張力が作用しても、鋼殻エレメントによる分離を防止することができ、鋼殻エレメントの変形を防止できる、鋼殻エレメントの接合構造を提供することにある。
In the joint structure of steel shell elements as described in Patent Document 1, if the positional relationship between adjacent steel shell elements due to construction exceeds the allowable range in which the convex joint and the concave joint can engage, the convex joint It is not possible to insert a convex joint into a concave joint because the protrusion hits the locking part of the concave joint, and the protrusion at the tip of the convex joint is omitted, especially in the part where the closing element is installed, where the positional relationship tends to be large. There were times when I had no choice but to do so. In such a case, the engagement between the protruding part of the convex joint and the locking part of the concave joint cannot provide the locking function, and when a tensile force is applied between adjacent steel shell elements, the steel It is no longer possible to prevent separation by the shell element.
The problem to be solved by the present invention is that it is possible to absorb construction errors of steel shell elements, and even if a tensile force acts between adjacent steel shell elements, it is possible to prevent separation by the steel shell elements. An object of the present invention is to provide a joining structure for steel shell elements that can prevent deformation of the elements.
本願請求項１に係る発明は、地中に並設され、第一鋼殻エレメントと、前記第一鋼殻エレメントの隣に設置された第二鋼殻エレメントと、を有する複数の鋼殻エレメントの接合構造であって、前記第一鋼殻エレメントは、軸方向に沿って形成された雌継手と、前記雌継手の前記第二鋼殻エレメント側に開口された溝部と、を有し、前記第二鋼殻エレメントは、軸方向に沿って形成された雄継手と、前記雄継手に形成され前記溝部に挿入可能で前記雌継手と係合しない突出部と、を有しており、前記第一鋼殻エレメントと前記第二鋼殻エレメントとの間において、前記第一鋼殻エレメント及び前記第二鋼殻エレメントの側板に両端部が固定された補強部材を備え、前記補強部材は、前記雌継手に固定されていることを特徴とする鋼殻エレメントの接合構造である。 The invention according to claim 1 of the present application provides a plurality of steel shell elements arranged in parallel underground and having a first steel shell element and a second steel shell element installed next to the first steel shell element. In the joint structure, the first steel shell element has a female joint formed along the axial direction and a groove opened on the second steel shell element side of the female joint, and The double steel shell element has a male joint formed along the axial direction, a protrusion formed on the male joint that can be inserted into the groove and does not engage with the female joint, and the first A reinforcing member is provided between the steel shell element and the second steel shell element, both ends of which are fixed to the side plates of the first steel shell element and the second steel shell element, and the reinforcing member is connected to the female joint. This is a joint structure of steel shell elements, which is characterized by being fixed to.
本願請求項２に係る発明は、地中に並設され、第一鋼殻エレメントと、前記第一鋼殻エレメントの隣に設置された第二鋼殻エレメントと、前記第二鋼殻エレメントの隣に設置された第三鋼殻エレメントとを有する複数の鋼殻エレメントの接合構造であって、前記第一鋼殻エレメントは、軸方向に沿って形成された雌継手と、前記雌継手の前記第二鋼殻エレメント側に開口された溝部と、を有し、前記第三鋼殻エレメントは、軸方向に沿って形成された雌継手と、前記雌継手の前記第二鋼殻エレメント側に開口された溝部と、を有し、前記第二鋼殻エレメントは、軸方向に沿って第一鋼殻エレメント側及び第三鋼殻エレメント側の双方に形成された雄継手と、前記雄継手にそれぞれ形成され前記第一鋼殻エレメント及び前記第三鋼殻エレメントの双方の前記溝部に挿入可能で前記第一鋼殻エレメント及び前記第三鋼殻エレメントの双方の前記雌継手と係合しない突出部と、を有しており、前記第一鋼殻エレメントと前記第二鋼殻エレメントとの間及び前記第二鋼殻エレメントと前記第三鋼殻エレメントとの間において、前記第一鋼殻エレメント及び前記第二鋼殻エレメントの側板並びに前記第二鋼殻エレメント及び前記第三鋼殻エレメントの側板に両端部が固定された補強部材をそれぞれ備え、前記補強部材は、前記第一鋼殻エレメント及び前記第三鋼殻エレメントの前記雌継手にそれぞれ固定されていることを特徴とする鋼殻エレメントの接合構造である。 The invention according to claim 2 of the present application provides a first steel shell element, a second steel shell element installed next to the first steel shell element, and a second steel shell element next to the second steel shell element, which are installed in parallel underground. A joint structure of a plurality of steel shell elements, the first steel shell element having a female joint formed along the axial direction, and a third steel shell element installed in the female joint. a groove portion opened on the second steel shell element side; the third steel shell element has a female joint formed along the axial direction; and a groove portion opened on the second steel shell element side of the female joint. The second steel shell element has a male joint formed on both the first steel shell element side and the third steel shell element side along the axial direction, and a groove portion formed on the male joint, respectively. a protrusion that is insertable into the groove of both the first steel shell element and the third steel shell element and does not engage with the female joint of both the first steel shell element and the third steel shell element; between the first steel shell element and the second steel shell element and between the second steel shell element and the third steel shell element. Reinforcement members each having both ends fixed to the side plates of the second steel shell element and the side plates of the second steel shell element and the third steel shell element; This joint structure of steel shell elements is characterized in that the steel shell elements are fixed to the female joints of the steel shell elements.
本願請求項３に係る発明は、地中に並設され、第一鋼殻エレメントと、前記第一鋼殻エレメントの隣に設置された第二鋼殻エレメントと、前記第二鋼殻エレメントの隣に設置された第三鋼殻エレメントとを有する複数の鋼殻エレメントの接合構造であって、前記第一鋼殻エレメントは、軸方向に沿って形成された雌継手と、前記雌継手の前記第二鋼殻エレメント側に開口された溝部と、を有し、前記第三鋼殻エレメントは、軸方向に沿って形成された雌継手と、前記雌継手の前記第二鋼殻エレメント側に開口された溝部と、を有し、前記第二鋼殻エレメントは、軸方向に沿って第一鋼殻エレメント側及び第三鋼殻エレメント側の双方に形成された雄継手と、前記第一鋼殻エレメント側の前記雄継手に形成され前記第一鋼殻エレメントの前記溝部に挿入可能であって、前記第一鋼殻エレメントの前記雌継手と係合しない突出部と、前記第三鋼殻エレメント側の前記雄継手に形成され前記第三鋼殻エレメントの前記溝部に挿入可能であって、前記第三鋼殻エレメントの前記雌継手と係合する突出部と、を有しており、前記第一鋼殻エレメントと前記第二鋼殻エレメントとの間において、前記第一鋼殻エレメント及び前記第二鋼殻エレメントの側板に両端部が固定された補強部材を備え、前記補強部材は、前記第一鋼殻エレメントの前記雌継手に固定されていることを特徴とする鋼殻エレメントの接合構造である。 The invention according to claim 3 of the present application provides a first steel shell element, a second steel shell element installed next to the first steel shell element, and a second steel shell element installed next to the second steel shell element, which are installed in parallel underground. A joint structure of a plurality of steel shell elements, the first steel shell element having a female joint formed along the axial direction, and a third steel shell element installed in the female joint. a groove portion opened on the second steel shell element side; the third steel shell element has a female joint formed along the axial direction; and a groove portion opened on the second steel shell element side of the female joint. The second steel shell element has a male joint formed on both the first steel shell element side and the third steel shell element side along the axial direction, and the first steel shell element a protrusion formed on the male joint on the side and insertable into the groove of the first steel shell element and not engaging with the female joint of the first steel shell element; and a protrusion on the third steel shell element side. a protrusion that is formed on the male joint and that is insertable into the groove of the third steel shell element and that engages with the female joint of the third steel shell element; A reinforcing member having both ends fixed to the side plates of the first steel shell element and the second steel shell element is provided between the shell element and the second steel shell element, and the reinforcing member This is a joining structure of steel shell elements, characterized in that the steel shell elements are fixed to the female joint of the shell element.
本願請求項４に係る発明は、前記補強部材の両端部が固定される鋼殻エレメントは、側板と頂板及び底板との少なくとも一方との間に設けられたコーナー補強材を有し、前記コーナー補強材は、隣り合う鋼殻エレメントに引張力が作用した際に前記側板の変形を抑止することを特徴とする請求項１乃至請求項３のうちいずれか１項に記載の鋼殻エレメントの接合構造である。 In the invention according to claim 4 of the present application, the steel shell element to which both ends of the reinforcing member are fixed has a corner reinforcing member provided between the side plate and at least one of the top plate and the bottom plate, and the corner reinforcing member is provided between the side plate and at least one of the top plate and the bottom plate. The joining structure of steel shell elements according to any one of claims 1 to 3, wherein the material suppresses deformation of the side plate when a tensile force is applied to adjacent steel shell elements. It is.
本願請求項５に係る発明は、前記補強部材は、両端部が前記側板にボルトを介して固定されており、前記ボルトが前記補強部材の端部及び前記側板を貫通し、前記ボルトの端部に座金を介してナットが螺合され、前記座金の前記ナットと接する面、あるいは、前記ナットの前記座金と接する面の少なくとも一方が球面であることを特徴とする請求項１乃至請求項４のうちいずれか１項に記載の鋼殻エレメントの接合構造である。 In the invention according to claim 5 of the present application, both ends of the reinforcing member are fixed to the side plate via bolts, and the bolt passes through the end of the reinforcing member and the side plate, and the end of the bolt A nut is screwed onto the washer through a washer, and at least one of the surface of the washer in contact with the nut, or the surface of the nut in contact with the washer is a spherical surface. It is a joining structure of the steel shell element according to any one of these items.
本願請求項６に係る発明は、前記補強部材は、両端部が前記側板にボルトを介して固定されており、前記ボルトが前記補強部材の端部及び前記側板を貫通し、前記ボルトの端部に座金を介してナットが螺合され、前記座金は、前記ナットと接する面が反対の面に対して傾斜しているテーパー座金であることを特徴とする請求項１乃至請求項５のうちいずれか１項に記載の鋼殻エレメントの接合構造である。 In the invention according to claim 6 of the present application, both ends of the reinforcing member are fixed to the side plate via bolts, and the bolt passes through the end of the reinforcing member and the side plate, and the end of the bolt A nut is screwed onto the washer through a washer, and the washer is a tapered washer in which a surface in contact with the nut is inclined with respect to an opposite surface. This is a joint structure of the steel shell element according to item 1.
本願請求項７に係る発明は、請求項１乃至請求項６のうちいずれか１項に記載の鋼殻エレメントの接合構造の施工方法であって、前記補強部材を前記雌継手に固定した後に、前記補強部材の両端部を隣り合う鋼殻エレメントの側板に固定することを特徴とする鋼殻エレメントの接合構造の施工方法である。 The invention according to claim 7 of the present application is a method for constructing the joining structure of steel shell elements according to any one of claims 1 to 6, which comprises: after fixing the reinforcing member to the female joint, This method of constructing a joined structure of steel shell elements is characterized in that both ends of the reinforcing member are fixed to side plates of adjacent steel shell elements.
本願請求項８に係る発明は、前記補強部材の両端部を隣り合う鋼殻エレメントの側板に固定する際に、当該補強部材が固定された雌継手を備える鋼殻エレメントに先に固定することを特徴とする請求項７に記載の鋼殻エレメントの接合構造の施工方法である。 The invention according to claim 8 of the present application provides that, when fixing both ends of the reinforcing member to the side plates of adjacent steel shell elements, the reinforcing member is first fixed to a steel shell element having a fixed female joint. A method for constructing a joint structure for steel shell elements according to claim 7.
本発明によれば、雄継手の係合しない突出部は雌継手の溝部に対して挿入深さを調整できるので、隣り合う鋼殻エレメント間の施工誤差を吸収でき、しかも、隣り合う鋼殻エレメントどうしは補強部材で連結されているため引張力に対しても抵抗し、強固な鋼殻構造体、外殻躯体を容易に構築することが可能である。特に施工誤差が大きくなりやすい閉合エレメントにおいて効果的である。
また、補強部材は雌継手に固定されているので、取付け作業が行いやすい。さらに、鋼殻エレメント間に加わる引張力は雌継手にも分散されるため、引張力による側板の変形を防止できる。
According to the present invention, since the insertion depth of the unengaged protrusion of the male joint can be adjusted with respect to the groove of the female joint, construction errors between adjacent steel shell elements can be absorbed, and furthermore, the insertion depth between adjacent steel shell elements can be adjusted. Since they are connected by reinforcing members, they can resist tensile forces, making it possible to easily construct a strong steel shell structure and outer shell. This is particularly effective for closing elements where construction errors are likely to be large.
Furthermore, since the reinforcing member is fixed to the female joint, it is easy to install the reinforcing member. Furthermore, since the tensile force applied between the steel shell elements is also distributed to the female joint, deformation of the side plate due to the tensile force can be prevented.
加えて、補強部材の両端部が固定される鋼殻エレメントは、側板と頂板及び底板との少なくとも一方との間に設けられたコーナー補強材を有し、このコーナー補強材は、隣り合う鋼殻エレメントに引張力が作用した際に前記側板の変形を抑止するので、鋼殻エレメントのコーナー部分が補強されるとともに、補強部材の固定位置からコーナー補強材を介して頂板あるいは底板に応力が伝達されるので、側板の孕み等の変形を抑止して安定した構造とすることができる。 In addition, the steel shell element to which both ends of the reinforcing member are fixed has a corner reinforcement provided between the side plate and at least one of the top plate and the bottom plate, and this corner reinforcement is connected to the adjacent steel shell. Since deformation of the side plate is suppressed when tensile force is applied to the element, the corner portions of the steel shell element are reinforced, and stress is transmitted from the fixed position of the reinforcing member to the top plate or bottom plate via the corner reinforcing material. Therefore, deformation such as entrapment of the side plates can be suppressed and a stable structure can be achieved.
加えて、補強部材は、両端部が側板にボルトを介して固定されており、ボルトが補強部材の端部及び側板を貫通し、ボルトの端部に座金を介してナットが螺合され、座金のナットと接する面、あるいは、ナットの座金と接する面の少なくとも一方が球面であるので、隣接する鋼殻エレメントの側板どうしが互いに傾斜した位置関係であった場合でも、ボルトの軸方向が側板を傾斜した状態で貫通しても、ナットが片当たりすることはなく、補強部材やボルトの変形や破損を防止できる。 In addition, both ends of the reinforcing member are fixed to the side plate via bolts, the bolt passes through the end of the reinforcing member and the side plate, and a nut is screwed to the end of the bolt through a washer. Since at least one of the surfaces in contact with the nut or the surface of the nut in contact with the washer is a spherical surface, even if the side plates of adjacent steel shell elements are inclined to each other, the axial direction of the bolt will not touch the side plates. Even if the nut is penetrated in an inclined state, the nut will not hit unevenly, and deformation and damage of the reinforcing member and bolt can be prevented.
加えて、補強部材は、両端部が側板にボルトを介して固定されており、ボルトが補強部材の端部及び側板を貫通し、ボルトの端部に座金を介してナットが螺合され、座金は、ナットと接する面が反対の面に対して傾斜しているテーパー座金であるので、隣接する鋼殻エレメントの側板どうしが互いに傾斜した位置関係であった場合でも、ボルトの軸方向が側板を傾斜した状態で貫通しても、座金のナットに接する面とボルトの軸方向とのなす角度を直角に近づけることができ、これにより、ナットの片当たりを防いで、補強部材やボルトの変形や破損を防止する。 In addition, both ends of the reinforcing member are fixed to the side plate via bolts, the bolt passes through the end of the reinforcing member and the side plate, and a nut is screwed to the end of the bolt through a washer. is a tapered washer in which the surface in contact with the nut is inclined with respect to the opposite surface, so even if the side plates of adjacent steel shell elements are inclined to each other, the axial direction of the bolt will not touch the side plate. Even when penetrating in an inclined state, the angle between the surface of the washer in contact with the nut and the axial direction of the bolt can be made close to a right angle, thereby preventing uneven contact of the nut and preventing deformation of the reinforcing member or bolt. Prevent damage.
以下、本発明の実施の形態につき図面を参照する等して説明する。なお、本発明は、実施形態に限定されないことはいうまでもない。 Embodiments of the present invention will be described below with reference to the drawings. Note that it goes without saying that the present invention is not limited to the embodiments.
〔第１の実施形態〕
以下、本発明の第１の実施形態を図１～図６と共に説明する。
図１は、鋼殻構造体の断面図であり、図２は、基準エレメントの断面図であり、図３は、一般エレメントの断面図であり、図４は、閉合エレメントの断面図であり、図５は、鋼殻構造体の要部断面図であり、図６は、鋼殻エレメントの接合部分の断面図である。
[First embodiment]
A first embodiment of the present invention will be described below with reference to FIGS. 1 to 6.
1 is a sectional view of the steel shell structure, FIG. 2 is a sectional view of a reference element, FIG. 3 is a sectional view of a general element, and FIG. 4 is a sectional view of a closing element, FIG. 5 is a sectional view of a main part of the steel shell structure, and FIG. 6 is a sectional view of a joint portion of steel shell elements.
非開削工法により地下構造物を構築するには、まず、図１に示すように、鋼製の多数の中空筒状の鋼殻エレメント１を、断面視で周方向に閉鎖するよう、相互に接合して地中に並設して鋼殻構造体２を形成し、鋼殻エレメント１の内部にコンクリートなどを充填して外殻躯体を形成する。その後、外殻躯体の内側の土砂を掘削する。 To construct an underground structure using the trenchless construction method, first, as shown in Fig. 1, a large number of hollow cylindrical steel shell elements 1 are joined together so that they are closed in the circumferential direction when viewed in cross section. The steel shell elements 1 are placed side by side in the ground to form a steel shell structure 2, and the inside of the steel shell elements 1 is filled with concrete or the like to form an outer shell frame. After that, the earth and sand inside the outer shell will be excavated.
鋼殻エレメント１には、基準エレメント１ａと、一般エレメント１ｂと、閉合エレメント１ｃとがあり、鋼殻構造体２を形成するには、例えば、基準エレメント１ａを構築位置の頂部中央と底部中央に推進埋設し、基準エレメント１ａの周方向両側に一般エレメント１ｂを順次接合しながら並設し、掘削順序において末端となる位置に閉合エレメント１ｃを推進埋設して先に設置されている一般エレメント１ｂと接合する。 The steel shell element 1 includes a reference element 1a, a general element 1b, and a closing element 1c. To form the steel shell structure 2, for example, the reference element 1a is placed at the center of the top and the center of the bottom of the construction position. The general elements 1b are sequentially joined and placed side by side on both sides of the reference element 1a in the circumferential direction, and the closing element 1c is pushed and buried at the end position in the excavation order to connect the general element 1b installed earlier. Join.
基準エレメント１ａは、図２に示すように、断面略矩形で中空の本体部１０と、本体部１０の両側の上下端部から側方へ張り出し軸方向に沿って形成された雌継手１１とを備える。
本体部１０は、左右一対の側板１００と、側板１００の上下端からそれぞれ延びて左右の側板１００間を連結する頂板１０１及び底板１０２とを備える。
一方の側板１００には、開閉自在な蓋１０３で閉鎖された出入口１０４が形成されている。
また、側板１００の上端部と頂板１０１の側端部との間、及び、側板１００の下端部と底板１０２の側端部との間には、コーナー補強材１０５が軸方向の適宜間隔ごとに架設されている。
As shown in FIG. 2, the reference element 1a includes a hollow body portion 10 having a substantially rectangular cross section, and female joints 11 extending laterally from the upper and lower ends on both sides of the body portion 10 and formed along the axial direction. Be prepared.
The main body 10 includes a pair of left and right side plates 100, and a top plate 101 and a bottom plate 102 that extend from the upper and lower ends of the side plates 100 and connect the left and right side plates 100, respectively.
One side plate 100 is formed with an entrance/exit 104 that is closed with a lid 103 that can be opened and closed.
Corner reinforcing materials 105 are provided at appropriate intervals in the axial direction between the upper end of the side plate 100 and the side end of the top plate 101, and between the lower end of the side plate 100 and the side end of the bottom plate 102. It is being constructed.
雌継手１１は、内側片１１ａと外側片１１ｂとで側方に開口する溝部１１０を有し、溝部１１０の内部には上下両面から突出する係止部１１１が形成される。
溝部１１０の開口は、シール材が注入されたバネ状の二重のパッキング１１２で閉鎖されている。
また、雌継手１１には、内側片１１ａを貫通し外側片１１ｂを貫通しないネジ孔１１３が形成されている。このネジ孔１１３は、溝部１１０の開口が開かないよう、図示しない開き止めボルトを螺合させることができる。外側片１１ｂに形成されたネジ孔１１３が有底であるのは止水効果を高めるためである。なお、また、閉合エレメント１ｃに接合される一般エレメント１ｂの雌継手１１については、ネジ孔１１３は、後述する補強部材３が固定されるので内側片１１ａにだけ設けられており、外側片１１ｂには設けられていない（図５、図６）。この補強部材３が固定されるために内側片１１ａに設けられるネジ孔１１３は有底であっても良い。
The female joint 11 has a groove 110 that opens laterally between an inner piece 11a and an outer piece 11b, and a locking part 111 that protrudes from both upper and lower surfaces is formed inside the groove 110.
The opening of the groove 110 is closed with a spring-like double packing 112 filled with a sealing material.
Further, the female joint 11 is formed with a screw hole 113 that penetrates the inner piece 11a but does not penetrate the outer piece 11b. A locking bolt (not shown) can be screwed into this screw hole 113 so that the opening of the groove 110 does not open. The reason why the screw hole 113 formed in the outer piece 11b is bottomed is to enhance the water-stopping effect. In addition, regarding the female joint 11 of the general element 1b that is joined to the closing element 1c, the screw hole 113 is provided only in the inner piece 11a because the reinforcing member 3, which will be described later, is fixed, and is provided in the outer piece 11b. (Fig. 5, Fig. 6). The screw hole 113 provided in the inner piece 11a for fixing the reinforcing member 3 may have a bottom.
一般エレメント１ｂは、図３に示すように、本体部１０と、本体部１０の一側の上下端部から側方へ張り出し軸方向に沿って形成された雌継手１１と、本体部１０の他側の上下端部から側方へ張り出し軸方向に沿って形成された雄継手１２とを備える。
本体部１０及び雌継手１１は、基準エレメント１ａの本体部１０及び雌継手１１とほぼ同様の構造を有する。
また、閉合エレメント１ｃに接合される一般エレメント１ｂの雌継手１１側の側板１００の上下端部であって、コーナー補強材１０５が取り付けられる高さの範囲に、ボルト挿通孔１０６が穿設されている（図５、図６）。ボルト挿通孔１０６とコーナー補強材１０５との鋼殻エレメント軸方向の距離も補強部材の固定位置からコーナー補強材を介して頂板あるいは底板に応力を伝達して、側板の孕み等の変形を抑止して安定した構造とするために満足するものに設定されている。
As shown in FIG. 3, the general element 1b includes a main body 10, a female joint 11 extending laterally from the upper and lower ends of one side of the main body 10 and formed along the axial direction, and other parts of the main body 10. A male joint 12 is provided, which is formed along the axial direction and extends laterally from the upper and lower ends of the side.
The main body portion 10 and the female joint 11 have substantially the same structure as the main body portion 10 and the female joint 11 of the reference element 1a.
Further, bolt insertion holes 106 are drilled at the upper and lower ends of the side plate 100 on the female joint 11 side of the general element 1b to be joined to the closing element 1c, in a height range where the corner reinforcing material 105 is attached. (Figures 5 and 6). The distance between the bolt insertion hole 106 and the corner reinforcing material 105 in the axial direction of the steel shell element also transmits stress from the fixed position of the reinforcing member to the top plate or bottom plate via the corner reinforcing material, thereby suppressing deformation such as entrainment of the side plate. It is set to a satisfactory value to ensure a stable structure.
雄継手１２は、溝部１１０へ開口を通して挿入される板状の突出部１２０と、突出部１２０の先端から溝部１１０の上下両面方向へ突出する係合部１２１とを備える。
突出部１２０を溝部１１０内に挿入した状態で、雄継手１２と雌継手１１とを引き離そうとする力（引張力）が働くと、係合部１２１が係止部１１１に係合して抜け止めとなる。
また、図示しないが、突出部１２０には、雌継手１１のネジ孔１１３に対応して、開き止めボルトを挿通するための孔が形成される。この孔は、雌継手１１と雄継手１２との施工誤差とのパッキング１１２による止水性の確保の双方を考慮して、接続方向に例えばネジ孔１１３の径の数倍の大きさとしてある。
The male joint 12 includes a plate-shaped protrusion 120 that is inserted into the groove 110 through an opening, and an engaging portion 121 that protrudes from the tip of the protrusion 120 in both upper and lower directions of the groove 110.
When the protruding part 120 is inserted into the groove part 110 and a force (tensile force) is applied to separate the male joint 12 and female joint 11, the engaging part 121 engages with the locking part 111 to prevent them from coming off. becomes.
Further, although not shown, a hole is formed in the protrusion 120 in correspondence with the screw hole 113 of the female joint 11, into which a locking bolt is inserted. This hole has a size several times the diameter of the screw hole 113 in the connection direction, taking into consideration both construction errors between the female joint 11 and the male joint 12 and ensuring water-stopping properties by the packing 112.
閉合エレメント１ｃは、図４に示すように、本体部１０と、本体部１０の両側の上下端部から側方へ張り出し軸方向に沿って形成された雄継手１２とを備える。
本体部１０の構造は、基準エレメント１ａ及び一般エレメント１ｂの本体部１０と同様の構造を有する。また、閉合エレメント１ｃの側板１００の上下端部であって、コーナー補強材１０５が取り付けられる高さの範囲に、ボルト挿通孔１０６が穿設されている。ボルト挿通孔１０６とコーナー補強材１０５との鋼殻エレメント軸方向の距離も補強部材の固定位置からコーナー補強材を介して頂板あるいは底板に応力を伝達して、側板の孕み等の変形を抑止して安定した構造とするために満足するものに設定されている。
雄継手１２は、雄継手１２と同様に板状の突出部１２０を有するが、突出部１２０の先端に係合部１２１が形成されていない。
As shown in FIG. 4, the closing element 1c includes a main body 10 and male joints 12 extending laterally from the upper and lower ends on both sides of the main body 10 and extending along the axial direction.
The structure of the main body section 10 is similar to that of the main body sections 10 of the reference element 1a and the general element 1b. Further, bolt insertion holes 106 are bored at the upper and lower ends of the side plate 100 of the closing element 1c, at a height range where the corner reinforcing material 105 is attached. The distance between the bolt insertion hole 106 and the corner reinforcing material 105 in the axial direction of the steel shell element also transmits stress from the fixed position of the reinforcing member to the top plate or bottom plate via the corner reinforcing material, thereby suppressing deformation such as entrainment of the side plate. It is set to a satisfactory value to ensure a stable structure.
The male joint 12 has a plate-shaped protrusion 120 like the male joint 12, but the engagement part 121 is not formed at the tip of the protrusion 120.
隣り合う鋼殻エレメント１の雌継手１１と雄継手１２とは互いに係合されるが、閉合エレメント１ｃの雄継手１２には、雌継手１１の係止部１１１と係合する係合部１２１が形成されていないので、互いに係合せず、閉合エレメント１ｃとこれに隣接する一般エレメント１ｂとの位置誤差を吸収することはできるが、両者を引き離そうとする力（引張力）に対抗することはできない。
そこで、図５に示すように、閉合エレメント１ｃとその両側に隣接する一般エレメント１ｂとの間に補強部材３を介在させ、補強部材３の両端部を一般エレメント１ｂ及び閉合エレメント１ｃの対向する側板１００にそれぞれボルト４で固定し、閉合エレメント１ｃと一般エレメント１ｂを補強部材３で連結する。閉合エレメント１ｃが本発明の第二鋼殻エレメントに相当し、両側の一般エレメント１ｂのうち一方が本発明の第一鋼殻エレメントに、他方が本発明の第三鋼殻エレメント相当する。
The female joint 11 and male joint 12 of adjacent steel shell elements 1 are engaged with each other, but the male joint 12 of the closing element 1c has an engaging portion 121 that engages with the locking portion 111 of the female joint 11. Since they are not formed, they do not engage with each other and can absorb the positional error between the closing element 1c and the general element 1b adjacent thereto, but cannot resist the force (tensile force) that tries to separate them. .
Therefore, as shown in FIG. 5, a reinforcing member 3 is interposed between the closing element 1c and the general element 1b adjacent to both sides thereof, and both ends of the reinforcing member 3 are connected to the opposing side plates of the general element 1b and the closing element 1c. 100 with bolts 4, and the closing element 1c and the general element 1b are connected with the reinforcing member 3. The closing element 1c corresponds to the second steel shell element of the present invention, one of the general elements 1b on both sides corresponds to the first steel shell element of the present invention, and the other corresponds to the third steel shell element of the present invention.
図６に示すように、補強部材３は、金属帯片を略コ字状に折り曲げてなり、連結片３００と、その両端部を同じ方向に略直角に屈曲した固定片３０１とを備える。連結片３００と固定片３０１との角部には、三角形の補強片３０２が取り付けられている。
また、連結片３００の中央部分には貫通孔３０３が形成され、固定片３０１には固定用孔３０４が穿設されている。
As shown in FIG. 6, the reinforcing member 3 is formed by bending a metal strip into a substantially U-shape, and includes a connecting piece 300 and a fixing piece 301 whose both ends are bent at approximately right angles in the same direction. A triangular reinforcing piece 302 is attached to the corner of the connecting piece 300 and the fixed piece 301.
Further, a through hole 303 is formed in the center of the connecting piece 300, and a fixing hole 304 is bored in the fixing piece 301.
閉合エレメント１ｃとその隣の一般エレメント１ｂとは補強部材３で連結されるので、その雌継手１１の開口を開こうとする引張応力は加わらず、開き止めボルトは必要ない。
そこで、補強部材３は、連結片３００の貫通孔３０３を通してネジ５を内側片１１ａに設けられたネジ孔１１３に締め込むことにより雌継手１１に固定される。
また、両側の固定片３０１の固定用孔３０４を通して、閉合エレメント１ｃ及び一般エレメント１ｂの側板１００のボルト挿通孔１０６にボルト４を挿通し、ボルト４の先端に座金４０を介してナット４１を螺合し、補強部材３の両端部を閉合エレメント１ｃ及び一般エレメント１ｂの側板１００に固定する。なお、ナット４１はシングルであるが、緩み防止のために、ダブルナットにしても良い。
Since the closing element 1c and the general element 1b next to it are connected by the reinforcing member 3, no tensile stress is applied to open the opening of the female joint 11, and no opening prevention bolt is required.
Therefore, the reinforcing member 3 is fixed to the female joint 11 by passing the through hole 303 of the connecting piece 300 and tightening the screw 5 into the screw hole 113 provided in the inner piece 11a.
Also, insert the bolt 4 into the bolt insertion hole 106 of the side plate 100 of the closing element 1c and the general element 1b through the fixing hole 304 of the fixing piece 301 on both sides, and screw the nut 41 onto the tip of the bolt 4 via the washer 40. Then, both ends of the reinforcing member 3 are fixed to the side plates 100 of the closing element 1c and the general element 1b. Although the nut 41 is a single nut, it may be a double nut to prevent loosening.
なお、図５における左側の補強部材３に関しては、一般エレメント１ｂに固定される補強部材３の両端部を固定するボルト４のうち、閉合エレメント１ｃ側の一方のボルト４ａを一般エレメント１ｂ側の他方のボルト４ｂよりも長くしている（図５、図６）。このようにすることにより、補強部材３を一般エレメント１ｂの側板１００と雌継手１１に固定した後に、一方のボルト４ａを取付ける際に、閉合エレメント１ｃと一般エレメント１ｂとの距離の変化に対応でき、すなわち施工誤差にも対応（他方のボルト４ｂを長くする場合はエレメント間が広がった施工誤差に対応）しやすいようになっている。
また、図５における右側の補強部材３に関しては、一般エレメント１ｂに固定される補強部材３の両端部を固定するボルト４のうち、一般エレメント１ｂ側の他方のボルトを閉合エレメント１ｃ側の一方のボルトよりも長くしている（図５）。このようにすることにより、補強部材３を一般エレメント１ｂの雌継手１１と閉合エレメント１ｃの側板１００に固定した後、すなわち、一般エレメント１ｂと閉合エレメント１ｃとの連結をした後に、他方のボルトを取付ける際に、閉合エレメント１ｃと一般エレメント１ｂとの距離の変化に対応でき、すなわち施工誤差にも対応しやすいようになっている。
Regarding the left reinforcing member 3 in FIG. 5, among the bolts 4 that fix both ends of the reinforcing member 3 fixed to the general element 1b, one bolt 4a on the closing element 1c side is connected to the other bolt 4a on the general element 1b side. (Fig. 5, Fig. 6). By doing so, it is possible to accommodate changes in the distance between the closing element 1c and the general element 1b when attaching one of the bolts 4a after the reinforcing member 3 is fixed to the side plate 100 and the female joint 11 of the general element 1b. In other words, it is easy to deal with construction errors (if the other bolt 4b is lengthened, construction errors where the distance between the elements is widened) can be easily accommodated.
Regarding the reinforcing member 3 on the right side in FIG. 5, among the bolts 4 that fix both ends of the reinforcing member 3 fixed to the general element 1b, the other bolt on the general element 1b side is replaced with one bolt on the closing element 1c side. It is longer than the bolt (Figure 5). By doing so, after the reinforcing member 3 is fixed to the female joint 11 of the general element 1b and the side plate 100 of the closing element 1c, that is, after the general element 1b and the closing element 1c are connected, the other bolt is removed. When installing, it is possible to cope with changes in the distance between the closing element 1c and the general element 1b, that is, it is easy to cope with construction errors.
以下、地下構造物を構築する手順について説明する。
鋼殻エレメント１を、その先端面に掘削装置を装着し、発進立坑から軸方向に継ぎ足しながら推進させる。また、周方向に隣り合う鋼殻エレメント１を雌継手１１と雄継手１２とを接合しながら、基準エレメント１ａ、一般エレメント１ｂ、閉合エレメント１ｃの順に推進させていく。
The procedure for constructing an underground structure will be explained below.
A drilling device is attached to the tip of the steel shell element 1, and the steel shell element 1 is propelled while being added to the shaft in the axial direction from the starting shaft. Moreover, while joining the female joint 11 and the male joint 12 of the steel shell elements 1 adjacent in the circumferential direction, the reference element 1a, the general element 1b, and the closing element 1c are advanced in this order.
鋼殻エレメント１を周方向に接合するには、埋設しようとする雄継手１２の突出部１２０を、先に埋設されている鋼殻エレメント１の雌継手１１の溝部１１０に軸方向端部から差し込み、軸方向に推進させる。
溝部１１０の開口はバネ状のパッキング１１２で閉鎖されているので、溝部１１０に突出部１２０を挿入すると、突出部１２０の両面にパッキング１１２が圧接され、雌継手１１と雄継手１２の接合部が密封される。
To join the steel shell elements 1 in the circumferential direction, insert the protrusion 120 of the male joint 12 to be buried into the groove 110 of the female joint 11 of the steel shell element 1 that has been buried from the axial end. , propelled in the axial direction.
Since the opening of the groove 110 is closed by a spring-like packing 112, when the protrusion 120 is inserted into the groove 110, the packing 112 is pressed against both sides of the protrusion 120, and the joint between the female joint 11 and the male joint 12 is closed. sealed.
基準エレメント１ａ及び一般エレメント１ｂを設置したら、隣接する二つの一般エレメント１ｂの間に閉合エレメント１ｃを設置する。
閉合エレメント１ｃの設置は、一般エレメント１ｂと同様に行う。
閉合エレメント１ｃの両側の雄継手１２は、両側に位置する一般エレメント１ｂの雌継手１１と接合されるが、板状の突出部１２０を有するだけで、その先端に係合部１２１が形成されていないので、突出部１２０の溝部１１０に対する挿入長さを現地にあわせて調整することができ、両側の一般エレメント１ｂの施工誤差を吸収できる。すなわち、突出部１２０が、溝部１１０のパッキング１１２に接して止水性さえ確保できる程度の位置であれば、その程度の施工誤差まで吸収できることになる。
After installing the reference element 1a and the general element 1b, the closing element 1c is installed between two adjacent general elements 1b.
The closing element 1c is installed in the same manner as the general element 1b.
The male joints 12 on both sides of the closing element 1c are joined to the female joints 11 of the general element 1b located on both sides, but they only have a plate-shaped protrusion 120, and an engagement part 121 is not formed at the tip. Therefore, the insertion length of the protrusion 120 into the groove 110 can be adjusted according to the site, and construction errors of the general elements 1b on both sides can be absorbed. In other words, if the protruding portion 120 is in contact with the packing 112 of the groove portion 110 at a position where even water-stopping properties can be ensured, construction errors to that extent can be absorbed.
次に、閉合エレメント１ｃ及びその隣の一般エレメント１ｂの側板１００に設けられた蓋１０３を開けて出入口１０４を開放し、閉合エレメント１ｃとその両側の一般エレメント１ｂとの間の土砂を撤去する。
次いで、閉合エレメント１ｃと、その両側に位置する一般エレメント１ｂとの間において、内側片１１ａにネジ５を螺合させて雌継手１１に補強部材３の連結片３００をネジ５で固定し、閉合エレメント１ｃ及び一般エレメント１ｂの対向する側板１００に補強部材３の固定片３０１をボルト４で固定する。
Next, the lids 103 provided on the side plates 100 of the closing element 1c and the general element 1b adjacent thereto are opened to open the entrance/exit 104, and the earth and sand between the closing element 1c and the general elements 1b on both sides thereof is removed.
Next, between the closing element 1c and the general elements 1b located on both sides thereof, screws 5 are screwed into the inner piece 11a, and the connecting piece 300 of the reinforcing member 3 is fixed to the female joint 11 with the screws 5, and the closing is completed. Fixing pieces 301 of the reinforcing member 3 are fixed with bolts 4 to the opposing side plates 100 of the element 1c and the general element 1b.
すべての鋼殻エレメント１の設置が完了したら、鋼殻エレメント１の内部、及び、閉合エレメント１ｃとその両側の一般エレメント１ｂとの隙間にコンクリートを充填して外殻躯体を構築する。
さらに、外殻躯体で囲まれた内側の土砂を撤去した後、外殻躯体の内側に地下構造物を構築する。
After the installation of all the steel shell elements 1 is completed, the inside of the steel shell elements 1 and the gap between the closing element 1c and the general elements 1b on both sides thereof are filled with concrete to construct an outer shell frame.
Furthermore, after removing the earth and sand inside the outer shell, an underground structure is constructed inside the outer shell.
〔第２の実施形態〕
以下、本発明に係る第２の実施形態について図面の図７及び図８と共に説明する。なお、第１の実施形態と同様の部分については説明を省略し、主に異なる部分について説明する。
[Second embodiment]
A second embodiment of the present invention will be described below with reference to FIGS. 7 and 8 of the drawings. Note that descriptions of parts similar to those in the first embodiment will be omitted, and mainly different parts will be described.
第２の実施形態において、ボルト４に螺合されるナット４１’の両端面は、軸方向外側へ凸に湾曲した球面となっている。
また、一方のボルト４ａに取り付けられ、鋼殻エレメント１の側板１００とナット４１’との間に介在される座金４０’は、ナット４１’と接する面が傾斜したテーパー座金である。
In the second embodiment, both end surfaces of a nut 41' that is screwed onto the bolt 4 are spherical surfaces that are convexly curved outward in the axial direction.
Further, a washer 40' attached to one of the bolts 4a and interposed between the side plate 100 of the steel shell element 1 and the nut 41' is a tapered washer whose surface in contact with the nut 41' is inclined.
図８の（Ａ）に示すように、一般エレメント１ｂが閉合エレメント１ｃに対して、上側に向けて傾斜した位置である場合、座金４０’の厚い側を上に向ける。また、図８の（Ｂ）に示すように、一般エレメント１ｂが閉合エレメント１ｃに対して、下側に向けて傾斜した位置である場合、座金４０’の厚い側を下に向ける。すなわち、座金４０’の厚い側を、対向する側板１００間の距離が狭い側に向けると、座金４０’のナット４１と接する面がボルト４に対して直角に近づく。 As shown in FIG. 8A, when the general element 1b is in an upwardly inclined position with respect to the closing element 1c, the thick side of the washer 40' faces upward. Further, as shown in FIG. 8B, when the general element 1b is in a position inclined downward with respect to the closing element 1c, the thick side of the washer 40' faces downward. That is, when the thick side of the washer 40' is directed toward the side where the distance between the opposing side plates 100 is narrow, the surface of the washer 40' that contacts the nut 41 approaches the bolt 4 at a right angle.
従って、閉合エレメント１ｃとこれに隣り合う一般エレメント１ｂとが傾斜した位置であって、対向する側板１００が互いに傾斜した状態で、一方のボルト４ａが傾斜した状態で側板１００を貫通することになったとしても、端面が球面であるナット４１’が座金４０，４０’に片当たり（一側のみが当接）することなく、側板１００及びボルト４の変形や破損を防止できる。 Therefore, the closing element 1c and the general element 1b adjacent thereto are in an inclined position, and the opposing side plates 100 are inclined to each other, and one bolt 4a passes through the side plate 100 in an inclined state. Even in this case, the nut 41' whose end surface is spherical does not come into partial contact with the washers 40, 40' (only one side contacts), thereby preventing the side plate 100 and the bolt 4 from being deformed or damaged.
〔第３の実施形態〕
以下、本発明に係る第３の実施形態について図９及び図１０と共に説明する。なお、第１及び第２の実施形態と同様の部分については説明を省略し、主に異なる部分について説明する。
[Third embodiment]
A third embodiment according to the present invention will be described below with reference to FIGS. 9 and 10. Note that descriptions of parts similar to those in the first and second embodiments will be omitted, and mainly different parts will be described.
第３の実施形態では、図９に示すように、閉合エレメント１ｃ’の両側に設けられた雄継手１２の内、一側の雄継手１２のみが、板状の突出部１２０の先端に形成された係合部１２１を備えており、他側の雄継手１２には係合部１２１が形成されていない。
また、閉合エレメント１ｃ’の係合部１２１を備えた板状の突出部１２０側の側板１００には、ボルト挿通孔１０６が設けられていない。これに対向する一般エレメント１ｂの側板１００にもボルト挿通孔１０６は設けられていない（図１０）。
In the third embodiment, as shown in FIG. 9, of the male joints 12 provided on both sides of the closing element 1c', only one male joint 12 is formed at the tip of the plate-shaped protrusion 120. The male joint 12 on the other side has no engaging portion 121 formed therein.
Further, the bolt insertion hole 106 is not provided in the side plate 100 on the side of the plate-shaped protrusion 120 provided with the engagement portion 121 of the closing element 1c'. The side plate 100 of the general element 1b facing this is also not provided with bolt insertion holes 106 (FIG. 10).
従って、閉合エレメント１ｃ’とその一側に隣接する一般エレメント１ｂとの間は、補強部材３で連結する必要がなく、図１０に示すように、閉合エレメント１ｃ’と、他側に隣接する一般エレメント１ｂとの間のみが、補強部材３で連結されている。閉合エレメント１ｃ’が本発明の第二鋼殻エレメントに相当し、両側の一般エレメント１ｂのうち閉合エレメント１ｃ’と係合しない一方が本発明の第一鋼殻エレメントに、閉合エレメント１ｃ’と係合する他方が本発明の第三鋼殻エレメント相当する。 Therefore, there is no need to connect the closing element 1c' and the general element 1b adjacent to one side with the reinforcing member 3, and as shown in FIG. The reinforcing member 3 is connected only to the element 1b. The closing element 1c' corresponds to the second steel shell element of the present invention, and the one of the general elements 1b on both sides that does not engage with the closure element 1c' is the first steel shell element of the present invention, and the one that does not engage with the closure element 1c'. The other matching element corresponds to the third steel shell element of the present invention.
〔その他の変形例〕
本発明は上記の実施の形態に限定されるものではない。例えば以下のようなものも含まれる。
[Other variations]
The present invention is not limited to the above embodiments. Examples include the following:
本実施形態では、鋼殻エレメントの本体部は断面矩形としてあるが、長方形であっても良い。 In this embodiment, the main body of the steel shell element has a rectangular cross section, but it may have a rectangular shape.
第２の実施形態では、ナットの座金と接する面が球面となっているが、座金のナットと接する面を球面としてもよい。 In the second embodiment, the surface of the nut in contact with the washer is a spherical surface, but the surface of the washer in contact with the nut may be a spherical surface.
本実施形態では、雌継手の開口をパッキングで閉鎖しているが、このパッキングを省略して、雌継手と雄継手を係合した後、雌継手の溝部内にコンクリート等を充填することもできる。 In this embodiment, the opening of the female joint is closed with packing, but this packing may be omitted and the groove of the female joint may be filled with concrete or the like after the female and male joints are engaged. .
本実施形態では、基準エレメントの両側に一般エレメントを並設し、隣接する一般エレメントの間に閉合エレメントを設置したものであったが、これに限られない。
基準エレメントの雌継手と一般エレメントの雄継手との接合においても、本発明の補強部材を用いた接合構造を適用しても良い。この場合には、基準エレメントが本発明の第一鋼殻エレメントで一般エレメントが本発明の第二鋼殻エレメントに相当することになる。 また、先行して埋設された一般エレメントの雌継手と後行して埋設された一般エレメントの雄継手との接合においても、本発明の補強部材を用いた接合構造を適用しても良い。この場合には、先行して埋設された一般エレメントが本発明の第一鋼殻エレメントで後行して埋設された一般エレメントが本発明の第二鋼殻エレメントに相当することになる。
In this embodiment, the general elements are arranged in parallel on both sides of the reference element, and the closing element is installed between the adjacent general elements, but the present invention is not limited to this.
The joining structure using the reinforcing member of the present invention may also be applied to joining the female joint of the reference element and the male joint of the general element. In this case, the reference element corresponds to the first steel shell element of the present invention, and the general element corresponds to the second steel shell element of the present invention. Further, the joining structure using the reinforcing member of the present invention may also be applied to the joining of the female joint of the general element buried in advance and the male joint of the general element buried subsequently. In this case, the general element buried in advance corresponds to the first steel shell element of the present invention, and the general element buried subsequently corresponds to the second steel shell element of the present invention.
いずれの実施形態における各技術的事項を他の実施形態に適用して実施例としても良い。 Each technical matter in any embodiment may be applied to other embodiments to form an example.
１ 鋼殻エレメント
１ａ 基準エレメント
１ｂ 一般エレメント
１ｃ，１ｃ’ 閉合エレメント
１０ 本体部
１００ 側板
１０１ 頂板
１０２ 底板
１０３ 蓋
１０４ 出入口
１０５ コーナー補強材
１０６ ボルト挿通孔
１１ 雌継手
１１０ 溝部
１１１ 係止部
１１２ パッキング
１１３ ネジ孔
１２ 雄継手
１２０ 突出部
１２１ 係合部
２ 鋼殻構造体
３ 補強部材
３００ 連結片
３０１ 固定片
３０２ 補強片
３０３ 貫通孔
３０４ 固定用孔
４ ボルト
４０ 座金
４１，４１’ ナット
５ ネジ
1 Steel shell element 1a Reference element 1b General element 1c, 1c' Closing element 10 Main body 100 Side plate 101 Top plate 102 Bottom plate 103 Lid 104 Entrance/exit 105 Corner reinforcement 106 Bolt insertion hole 11 Female joint 110 Groove 111 Locking part 112 Packing 113 Screw Hole 12 Male joint 120 Projecting part 121 Engaging part 2 Steel shell structure 3 Reinforcing member 300 Connecting piece 301 Fixed piece 302 Reinforcing piece 303 Through hole 304 Fixing hole 4 Bolt 40 Washer 41, 41' Nut 5 Screw
Claims (8)
前記第一鋼殻エレメントは、軸方向に沿って形成された雌継手と、前記雌継手の前記第二鋼殻エレメント側に開口された溝部と、を有し、
前記第二鋼殻エレメントは、軸方向に沿って形成された雄継手と、前記雄継手に形成され前記溝部に挿入可能で前記雌継手と係合しない突出部と、を有しており、
前記第一鋼殻エレメントと前記第二鋼殻エレメントとの間において、前記第一鋼殻エレメント及び前記第二鋼殻エレメントの側板に両端部が固定された補強部材を備え、
前記補強部材は、前記雌継手に固定されている
ことを特徴とする鋼殻エレメントの接合構造。 A joint structure of a plurality of steel shell elements arranged in parallel underground and having a first steel shell element and a second steel shell element installed next to the first steel shell element,
The first steel shell element has a female joint formed along the axial direction, and a groove opened on the second steel shell element side of the female joint,
The second steel shell element has a male joint formed along the axial direction, and a protrusion formed on the male joint that can be inserted into the groove and does not engage with the female joint,
A reinforcing member having both ends fixed to side plates of the first steel shell element and the second steel shell element is provided between the first steel shell element and the second steel shell element,
The reinforcing member is fixed to the female joint. A joint structure for steel shell elements, wherein the reinforcing member is fixed to the female joint.
前記第一鋼殻エレメントは、軸方向に沿って形成された雌継手と、前記雌継手の前記第二鋼殻エレメント側に開口された溝部と、を有し、
前記第三鋼殻エレメントは、軸方向に沿って形成された雌継手と、前記雌継手の前記第二鋼殻エレメント側に開口された溝部と、を有し、
前記第二鋼殻エレメントは、軸方向に沿って第一鋼殻エレメント側及び第三鋼殻エレメント側の双方に形成された雄継手と、前記雄継手にそれぞれ形成され前記第一鋼殻エレメント及び前記第三鋼殻エレメントの双方の前記溝部に挿入可能で前記第一鋼殻エレメント及び前記第三鋼殻エレメントの双方の前記雌継手と係合しない突出部と、を有しており、
前記第一鋼殻エレメントと前記第二鋼殻エレメントとの間及び前記第二鋼殻エレメントと前記第三鋼殻エレメントとの間において、前記第一鋼殻エレメント及び前記第二鋼殻エレメントの側板並びに前記第二鋼殻エレメント及び前記第三鋼殻エレメントの側板に両端部が固定された補強部材をそれぞれ備え、
前記補強部材は、前記第一鋼殻エレメント及び前記第三鋼殻エレメントの前記雌継手にそれぞれ固定されている
ことを特徴とする鋼殻エレメントの接合構造。 A first steel shell element, a second steel shell element installed next to the first steel shell element, and a third steel shell element installed next to the second steel shell element, which are installed in parallel underground. A joint structure of a plurality of steel shell elements, comprising:
The first steel shell element has a female joint formed along the axial direction, and a groove opened on the second steel shell element side of the female joint,
The third steel shell element has a female joint formed along the axial direction, and a groove opened on the second steel shell element side of the female joint,
The second steel shell element includes a male joint formed on both the first steel shell element side and the third steel shell element side along the axial direction, and a male joint formed on the male joint, and a male joint formed on the first steel shell element and the third steel shell element side. a protrusion that can be inserted into the grooves of both the third steel shell elements and does not engage with the female joints of both the first steel shell element and the third steel shell element;
A side plate of the first steel shell element and the second steel shell element between the first steel shell element and the second steel shell element and between the second steel shell element and the third steel shell element. and reinforcing members each having both ends fixed to the side plates of the second steel shell element and the third steel shell element,
The reinforcing member is fixed to the female joint of the first steel shell element and the third steel shell element, respectively. A joining structure for steel shell elements.
前記第一鋼殻エレメントは、軸方向に沿って形成された雌継手と、前記雌継手の前記第二鋼殻エレメント側に開口された溝部と、を有し、
前記第三鋼殻エレメントは、軸方向に沿って形成された雌継手と、前記雌継手の前記第二鋼殻エレメント側に開口された溝部と、を有し、
前記第二鋼殻エレメントは、軸方向に沿って第一鋼殻エレメント側及び第三鋼殻エレメント側の双方に形成された雄継手と、前記第一鋼殻エレメント側の前記雄継手に形成され前記第一鋼殻エレメントの前記溝部に挿入可能であって、前記第一鋼殻エレメントの前記雌継手と係合しない突出部と、前記第三鋼殻エレメント側の前記雄継手に形成され前記第三鋼殻エレメントの前記溝部に挿入可能であって、前記第三鋼殻エレメントの前記雌継手と係合する突出部と、を有しており、
前記第一鋼殻エレメントと前記第二鋼殻エレメントとの間において、前記第一鋼殻エレメント及び前記第二鋼殻エレメントの側板に両端部が固定された補強部材を備え、
前記補強部材は、前記第一鋼殻エレメントの前記雌継手に固定されている
ことを特徴とする鋼殻エレメントの接合構造。 A first steel shell element, a second steel shell element installed next to the first steel shell element, and a third steel shell element installed next to the second steel shell element, which are installed in parallel underground. A joint structure of a plurality of steel shell elements, comprising:
The first steel shell element has a female joint formed along the axial direction, and a groove opened on the second steel shell element side of the female joint,
The third steel shell element has a female joint formed along the axial direction, and a groove opened on the second steel shell element side of the female joint,
The second steel shell element includes a male joint formed on both the first steel shell element side and the third steel shell element side along the axial direction, and the male joint on the first steel shell element side. a protrusion that is insertable into the groove of the first steel shell element and does not engage with the female joint of the first steel shell element; and a protrusion formed on the male joint on the third steel shell element side; a protrusion that can be inserted into the groove of the third steel shell element and engages with the female joint of the third steel shell element;
A reinforcing member having both ends fixed to side plates of the first steel shell element and the second steel shell element is provided between the first steel shell element and the second steel shell element,
The reinforcing member is fixed to the female joint of the first steel shell element. A joining structure for steel shell elements.
前記コーナー補強材は、隣り合う鋼殻エレメントに引張力が作用した際に前記側板の変形を抑止する
ことを特徴とする請求項１乃至請求項３のうちいずれか１項に記載の鋼殻エレメントの接合構造。 The steel shell element to which both ends of the reinforcing member are fixed has a corner reinforcing member provided between the side plate and at least one of the top plate and the bottom plate,
The steel shell element according to any one of claims 1 to 3, wherein the corner reinforcing material suppresses deformation of the side plate when a tensile force is applied to adjacent steel shell elements. joint structure.
前記ボルトが前記補強部材の端部及び前記側板を貫通し、前記ボルトの端部に座金を介してナットが螺合され、
前記座金の前記ナットと接する面、あるいは、前記ナットの前記座金と接する面の少なくとも一方が球面であることを特徴とする請求項１乃至請求項４のうちいずれか１項に記載の鋼殻エレメントの接合構造。 The reinforcing member has both ends fixed to the side plate via bolts,
The bolt passes through an end of the reinforcing member and the side plate, and a nut is screwed onto the end of the bolt via a washer,
The steel shell element according to any one of claims 1 to 4, wherein at least one of the surface of the washer in contact with the nut or the surface of the nut in contact with the washer is a spherical surface. joint structure.
前記ボルトが前記補強部材の端部及び前記側板を貫通し、前記ボルトの端部に座金を介してナットが螺合され、
前記座金は、前記ナットと接する面が反対の面に対して傾斜しているテーパー座金であることを特徴とする請求項１乃至請求項５のうちいずれか１項に記載の鋼殻エレメントの接合構造。 The reinforcing member has both ends fixed to the side plate via bolts,
The bolt passes through an end of the reinforcing member and the side plate, and a nut is screwed onto the end of the bolt via a washer,
The joining of steel shell elements according to any one of claims 1 to 5, wherein the washer is a tapered washer in which a surface in contact with the nut is inclined with respect to an opposite surface. structure.
前記補強部材を前記雌継手に固定した後に、前記補強部材の両端部を隣り合う鋼殻エレメントの側板に固定することを特徴とする鋼殻エレメントの接合構造の施工方法。 A method for constructing a joint structure for steel shell elements according to any one of claims 1 to 6, comprising:
A method for constructing a joining structure for steel shell elements, characterized in that after the reinforcing member is fixed to the female joint, both ends of the reinforcing member are fixed to side plates of adjacent steel shell elements.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006104678A (en) | 2004-09-30 | 2006-04-20 | Taisei Corp | Underground structure, construction method for underground structure, and lining structure of tunnel |
| JP2017125342A (en) | 2016-01-14 | 2017-07-20 | 戸田建設株式会社 | Construction method of underground outer shell structure |
| JP2019031772A (en) | 2017-08-04 | 2019-02-28 | 戸田建設株式会社 | Structure and method for connecting between shield tunnels |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006104678A (en) | 2004-09-30 | 2006-04-20 | Taisei Corp | Underground structure, construction method for underground structure, and lining structure of tunnel |
| JP2017125342A (en) | 2016-01-14 | 2017-07-20 | 戸田建設株式会社 | Construction method of underground outer shell structure |
| JP2019031772A (en) | 2017-08-04 | 2019-02-28 | 戸田建設株式会社 | Structure and method for connecting between shield tunnels |
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