JP4297854B2 - Load provision method - Google Patents
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- JP4297854B2 JP4297854B2 JP2004266253A JP2004266253A JP4297854B2 JP 4297854 B2 JP4297854 B2 JP 4297854B2 JP 2004266253 A JP2004266253 A JP 2004266253A JP 2004266253 A JP2004266253 A JP 2004266253A JP 4297854 B2 JP4297854 B2 JP 4297854B2
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Description
本発明は、既設の柱の中間部を切断して免震装置を設置するにあたり、前記柱の切断予定箇所に作用する荷重を仮受けする荷重仮受け方法に関する。 The present invention, when installing a seismic isolation device by cutting the middle portion of the existing pillar relates to load provisional How to Get method for receiving a load temporary acting on cut portion of said post.
従来、この種の荷重仮受け方法としては、図8に示すように、免震装置2を設置する作業空間を柱1の周りに確保した状態で、柱の周囲に梁6Aから床梁6Bにわたって前記柱1とは独立した複数の仮受け柱20を設置し、これら仮受け柱20によって、本来、柱1に作用するはずの荷重を仮受けするもの(以後、第1従来例という)があった(例えば、特許文献1参照)。また、この方法において、梁や床梁の強度が不足する場合には、事前に梁や床梁の補強を行っておく必要がある。
また、別の方法としては、梁や床梁に荷重を作用させないものとして、図9に示すように、前記柱1の切断予定箇所Sの上側と下側とに、横に張り出す状態に仮受け張出部材4をそれぞれ設置し、上下の仮受け張出部材4にわたってジャッキ装置5を取り付けて、この前記ジャッキ装置5を突っ張らせることで、上下の仮受け張出部材4を介して、柱1の中間部に作用する荷重を仮受けさせるもの(以後、第2従来例という)があった(例えば、特許文献2〜5参照)。
Conventionally, as this type of temporary load receiving method, as shown in FIG. 8, the work space in which the
As another method, assuming that no load is applied to the beam or floor beam, as shown in FIG. 9, a temporary projecting state is provided on the upper side and the lower side of the planned cutting site S of the
また、この種の荷重仮受け装置としては、上述のとおり、上下一対の仮受け張出部材と、それらにわたって設置するジャッキ装置とを設けたものがあった。 Moreover, as this kind of temporary load receiving device, as described above, there is one provided with a pair of upper and lower temporary receiving extending members and a jack device installed over them.
上述した従来の荷重仮受け技術に関して、特に、前記第1従来例によれば、切断対象の柱に作用していた荷重を、梁で受けるわけであるから、梁そのものに仮受け荷重を受けるだけの充分な強度が必要となる。しかし、対象となる建物によっては、階高の制限から梁成を大きくとれず、仮受け荷重に対して梁の強度が不足することがあったり、梁の補強も満足に実施できないことも少なくない。
従って、前記第1従来例は、梁の強度が確保できない場合には採用できない危険性があり、採用の自由度が低い問題点がある。言い換えれば、汎用性に欠けるという問題点がある。
一方、前記第2従来例によれば、梁に仮受け荷重を伝達させないから、前記第1従来例の問題は解消できるものの、同様の問題点が、仮受け張出部材の大断面化と言った形で現れる。即ち、仮受け張出部材は、力学上、基端部を柱に固定した片持ち梁の扱いとなり、上述の梁の場合より、さらに大きな成が必要となり易い。従って、天井高さが低い建物に対しては、非常に採用し難くなり、第1従来例と同様に、汎用性に欠けるという問題点がある。
Regarding the conventional load provisional technology described above, in particular, according to the first conventional example, the beam acting on the column to be cut is received by the beam, so only the provisional load is received by the beam itself. Sufficient strength is required. However, depending on the target building, the beam formation may not be large due to the restriction of the floor height, the beam strength may be insufficient with respect to the provisional load, and the beam reinforcement may not be satisfactorily performed. .
Therefore, the first conventional example has a risk that it cannot be adopted if the strength of the beam cannot be secured, and there is a problem that the degree of freedom of adoption is low. In other words, there is a problem of lack of versatility.
On the other hand, according to the second conventional example, since the temporary receiving load is not transmitted to the beam, the problem of the first conventional example can be solved, but the same problem is that the provisional extending member has a large cross section. Appears in the form. In other words, the temporary support projecting member is handled as a cantilever beam having a base end fixed to a column in terms of dynamics, and is more likely to be larger than the above-described beam. Therefore, it is very difficult to adopt for a building with a low ceiling height, and there is a problem that it lacks versatility like the first conventional example.
従って、本発明の目的は、上記問題点を解消し、色々な環境に対応して柱の荷重の仮受けを実施できる荷重仮受け方法を提供するところにある。 Therefore, an object of the present invention is to provide a load provision method that can solve the above-described problems and can perform provisional reception of a column load corresponding to various environments.
本発明の第1の特徴手段は、既設の柱の中間部を切断して免震装置を設置するにあたり、前記柱の切断予定箇所に作用する荷重を仮受けする荷重仮受け方法において、前記柱の切断予定箇所の上側と下側とに、横に張り出す状態に仮受け張出部材をそれぞれ設置し、上下の仮受け張出部材にわたってジャッキ装置を取り付け、前記ジャッキ装置で両仮受け張出部材間に突っ張り力を作用させた後、上の仮受け張出部材とその上の梁との間、及び、下の仮受け張出部材とその下の梁との間に、荷重伝達自在な状態に荷重伝達部材をそれぞれ介在させ、その後に前記ジャッキ装置を更に伸長操作するところにある。 The first characteristic means of the present invention is a load provisional receiving method for provisionally receiving a load acting on a planned cutting position of the column when the seismic isolation device is installed by cutting an intermediate part of an existing column. Temporary receiving overhanging members are installed on the upper and lower sides of the planned cutting location of each, and a jack device is attached over the upper and lower temporary receiving overhanging members. After applying a tensile force between the members, it is possible to transmit a load between the upper temporary support member and the upper beam, and between the lower temporary support member and the lower beam. state, respectively are interposed load transmitting member is thereafter further extended operating the jack device to be Rutokoro.
本発明の第1の特徴手段によれば、予め、ジャッキ装置で両仮受け張出部材間に突っ張り力を作用させることで、柱の上端部・上の仮受け張出部材・ジャッキ装置・下の仮受け張出部材・柱の下端部に連なる第1荷重分担経路が構築され、ジャッキ装置による突っ張り力に相当した仮受け分担荷重を、前記第1荷重分担経路で受け持つことが可能となる。その後、上の仮受け張出部材とその上の梁との間、及び、下の仮受け張出部材とその下の梁との間に、荷重伝達自在な状態に荷重伝達部材をそれぞれ介在させることで、上の梁・上の荷重伝達部材・上の仮受け張出部材・ジャッキ装置・下の仮受け張出部材・下の荷重伝達部材・下の梁に連なる第2荷重分担経路が構築される。従って、柱の切断に伴っては、前記第1荷重分担経路と第2荷重分担経路との両方の経路で、柱に作用する荷重を分担して仮受けすることが可能となる。
即ち、梁に仮受け荷重を受けるだけの強度が確保できない場合でも、不足する仮受け荷重分を、前記第1荷重分担経路の各部材によって受けることが可能となり、例えば、階高の制限から梁成を大きくとれないような建物でも、柱荷重を仮受けできるようになる。
一方、仮受け張出部材に充分な強度が確保できないような場合でも、不足する仮受け荷重分を、前記第2荷重分担経路の各部材によって受けることが可能となり、例えば、天井高さが低い等の理由で仮受け張出部材の成を小さくせざるを得ない建物でも、柱荷重を仮受けできるようになる。
そして、荷重伝達部材に、例えばジャッキ機構のような伸縮機構を備えてないものを採用しても、前記ジャッキ装置による更なる伸長操作によって荷重伝達部材と梁や仮受け張出部材との密着性を確保することが可能となり、より好ましい状態での柱荷重の仮受けを行うことが可能となる。また、ジャッキ装置の突っ張り力を調整することで、仮受け荷重を所定値に調整することが可能となる。
従って、色々な環境に対応して柱の荷重の仮受けを実施できるようになり、柱を切断した後に免震装置を取り付ける等の免震化工事に役立てることが可能なる。
According to the first feature means of the present invention, by applying a tension force between the temporary receiving extension members with the jack device in advance, the temporary receiving extension member, the jack device, the lower end of the column, A first load sharing path that is connected to the lower end portion of the temporary receiving overhanging member / column is constructed, and a temporary receiving shared load corresponding to a tension force by the jack device can be received by the first load sharing path. After that, the load transmitting member is interposed between the upper temporary support projecting member and the upper beam and between the lower temporary support projecting member and the lower beam so that the load can be transmitted. Thus, the second load sharing path connected to the upper beam, the upper load transmission member, the upper temporary receiving extension member, the jack device, the lower temporary receiving extension member, the lower load transmission member, and the lower beam is constructed. Is done. Therefore, along with the cutting of the column, it is possible to share and temporarily receive the load acting on the column by both the first load sharing route and the second load sharing route.
That is, even if the strength sufficient to receive the provisional load on the beam cannot be ensured, the insufficient provisional load can be received by each member of the first load sharing path. Even buildings that can't take a great deal can receive column loads temporarily.
On the other hand, even when sufficient strength cannot be ensured in the temporary support projecting member, it becomes possible to receive the insufficient temporary support load by each member of the second load sharing path, for example, the ceiling height is low. For example, a column load can be temporarily received even in a building in which the provisional extension member has to be made smaller.
Even if a load transmission member that does not include an expansion / contraction mechanism such as a jack mechanism is used, the adhesion between the load transmission member and the beam or provisional overhang member is further increased by the extension operation by the jack device. It is possible to secure the column load in a more preferable state. In addition, the provisional load can be adjusted to a predetermined value by adjusting the tension force of the jack device.
Accordingly, it becomes possible to temporarily receive the load of the column corresponding to various environments, and it can be used for seismic isolation work such as attaching a seismic isolation device after cutting the column.
本発明の第2の特徴手段は、既設の柱の中間部を切断して免震装置を設置するにあたり、前記柱の切断予定箇所に作用する荷重を仮受けする荷重仮受け方法において、前記柱の切断予定箇所の上側と下側とに、横に張り出す状態に仮受け張出部材をそれぞれ設置し、上下の仮受け張出部材にわたってジャッキ装置を取り付け、前記ジャッキ装置で両仮受け張出部材間に突っ張り力を作用させた後、上の仮受け張出部材とその上の梁との間、又は、下の仮受け張出部材とその下の梁との間に、荷重伝達自在な状態に荷重伝達部材を介在させ、その後に前記ジャッキ装置を更に伸長操作するところにある。 The second characteristic means of the present invention is the load temporary receiving method for temporarily receiving the load acting on the planned cutting position of the column when the seismic isolation device is installed by cutting an intermediate portion of the existing column. Temporary receiving overhanging members are installed on the upper and lower sides of the planned cutting location of each, and a jack device is attached over the upper and lower temporary receiving overhanging members. After applying a tensile force between the members, the load can be transmitted between the upper temporary support member and the upper beam, or between the lower temporary support member and the lower beam. state is interposed load transmitting member is thereafter further extended operating the jack device to be Rutokoro.
本発明の第2の特徴手段によれば、予め、ジャッキ装置で両仮受け張出部材間に突っ張り力を作用させることで、柱の上端部・上の仮受け張出部材・ジャッキ装置・下の仮受け張出部材・柱の下端部に連なる第1荷重分担経路が構築され、ジャッキ装置による突っ張り力に相当した仮受け分担荷重を、前記第1荷重分担経路で受け持つことが可能となる。その後、上の仮受け張出部材とその上の梁との間(又は、下の仮受け張出部材とその下の梁との間)に、荷重伝達自在な状態に荷重伝達部材を介在させることで、上の梁と上の荷重伝達部材・上の仮受け張出部材・ジャッキ装置・下の仮受け張出部材・柱の下端部(又は、柱の上端部・上の仮受け張出部材・ジャッキ装置・下の仮受け張出部材・下の荷重伝達部材と下の梁)に連なる第2荷重分担経路が構築される。従って、柱の切断に伴っては、前記第1荷重分担経路と第2荷重分担経路との両方の経路で、柱に作用する荷重を分担して仮受けすることが可能となる。
即ち、下の梁(又は、上の梁)に仮受け荷重を受けるだけの強度が確保できない場合でも、不足する仮受け荷重分を、前記第1荷重分担経路の各部材によって受けることが可能となり、例えば、階高の制限から下の梁(又は、上の梁)の梁成を大きくとれないような建物でも、柱荷重を仮受けできるようになる。
一方、上の仮受け張出部材(又は、下の仮受け張出部材)に充分な強度が確保できないような場合でも、不足する仮受け荷重分を、前記第2荷重分担経路の各部材によって受けることが可能となり、例えば、天井高さが低い等の理由で上の仮受け張出部材(又は、下の仮受け張出部材)の成を小さくせざるを得ない建物でも、柱荷重を仮受けできるようになる。
そして、荷重伝達部材に、例えばジャッキ機構のような伸縮機構を備えてないものを採用しても、前記ジャッキ装置による更なる伸長操作によって荷重伝達部材と梁や仮受け張出部材との密着性を確保することが可能となり、より好ましい状態での柱荷重の仮受けを行うことが可能となる。また、ジャッキ装置の突っ張り力を調整することで、仮受け荷重を所定値に調整することが可能となる。
従って、色々な環境に対応して柱の荷重の仮受けを実施できるようになり、柱を切断した後に免震装置を取り付ける等の免震化工事に役立てることが可能なる。
According to the second characteristic means of the present invention, by applying a tension force between the temporary receiving extension members in the jack device in advance, the temporary receiving extension member, jack device, lower A first load sharing path that is connected to the lower end portion of the temporary receiving overhanging member / column is constructed, and a temporary receiving shared load corresponding to a tension force by the jack device can be received by the first load sharing path. After that, the load transmitting member is interposed between the upper temporary support projecting member and the upper beam (or between the lower temporary support projecting member and the lower beam) so that the load can be transmitted. The upper beam and the upper load transmission member, the upper temporary receiving extension member, the jack device, the lower temporary receiving extension member, the lower end of the column (or the upper end of the column, the temporary receiving extension A second load sharing path that is continuous to the member, the jack device, the lower temporary support projecting member, the lower load transmission member, and the lower beam is constructed. Therefore, along with the cutting of the column, it is possible to share and temporarily receive the load acting on the column by both the first load sharing route and the second load sharing route.
That is, even when the lower beam (or the upper beam) is not strong enough to receive the temporary load, the insufficient temporary load can be received by each member of the first load sharing path. For example, a column load can be temporarily received even in a building in which the beam of the lower beam (or the upper beam) cannot be made large due to the floor height limitation.
On the other hand, even when sufficient strength cannot be ensured for the upper temporary support overhang member (or the lower temporary support overhang member), the insufficient temporary load is reduced by each member of the second load sharing path. For example, even in buildings where the upper provisional overhanging member (or the lower temporary overhanging member) has to be made smaller because the ceiling height is low, etc. You will be able to accept it temporarily.
Even if a load transmission member that does not include an expansion / contraction mechanism such as a jack mechanism is used, the adhesion between the load transmission member and the beam or provisional overhang member is further increased by the extension operation by the jack device. It is possible to secure the column load in a more preferable state. In addition, the provisional load can be adjusted to a predetermined value by adjusting the tension force of the jack device.
Accordingly, it becomes possible to temporarily receive the load of the column corresponding to various environments, and it can be used for seismic isolation work such as attaching a seismic isolation device after cutting the column.
本発明の第3の特徴手段は、既設の柱の中間部を切断して免震装置を設置するにあたり、前記柱の切断予定箇所に作用する荷重を仮受けする荷重仮受け方法において、前記柱の切断予定箇所の上側と下側とに、横に張り出す状態に仮受け張出部材をそれぞれ設置し、上下の仮受け張出部材にわたってジャッキ装置を取り付け、上の仮受け張出部材とその上の梁との間、及び、下の仮受け張出部材とその下の梁との間に、荷重伝達自在な状態に荷重伝達部材をそれぞれ介在させた後、前記ジャッキ装置で両仮受け張出部材間に突っ張り力を作用させるところにある。 According to a third feature of the present invention, in the load temporary receiving method for temporarily receiving a load acting on a planned cutting position of the column when the seismic isolation device is installed by cutting an intermediate portion of the existing column, Temporary receiving overhanging members are installed on the upper side and the lower side of the planned cutting portion of each of the above, and a jack device is attached over the upper and lower temporary receiving overhanging members. After interposing a load transmitting member between the upper beam and between the lower temporary support projecting member and the lower beam so that the load can be transmitted, both the temporary support members are extended by the jack device. There is a place where a tension force is applied between the protruding members.
本発明の第3の特徴手段によれば、ジャッキ装置で両仮受け張出部材間に突っ張り力を作用させることにより、柱の上端部・上の仮受け張出部材・ジャッキ装置・下の仮受け張出部材・柱の下端部に連なる第1荷重分担経路と、上の梁・上の荷重伝達部材・上の仮受け張出部材・ジャッキ装置・下の仮受け張出部材・下の荷重伝達部材・下の梁に連なる第2荷重分担経路とが共に構築される。従って、柱の切断に伴っては、前記第1荷重分担経路と第2荷重分担経路との両方の経路で、柱に作用する荷重を分担して仮受けすることが可能となる。
即ち、梁に仮受け荷重を受けるだけの強度が確保できない場合でも、不足する仮受け荷重分を、前記第1荷重分担経路の各部材によって受けることが可能となり、例えば、階高の制限から梁成を大きくとれないような建物でも、柱荷重を仮受けできるようになる。
一方、仮受け張出部材に充分な強度が確保できないような場合でも、不足する仮受け荷重分を、前記第2荷重分担経路の各部材によって受けることが可能となり、例えば、天井高さが低い等の理由で仮受け張出部材の成を小さくせざるを得ない建物でも、柱荷重を仮受けできるようになる。
従って、色々な環境に対応して柱の荷重の仮受けを実施できるようになり、柱を切断した後に免震装置を取り付ける等の免震化工事に役立てることが可能なる。
According to the third characteristic means of the present invention, by applying a tension force between the temporary receiving extension members in the jack device, the temporary receiving extension member, the upper jacking device, the lower temporary extension member, the upper end portion of the column. The first load-sharing path that continues to the lower end of the receiving extension member / column, the upper beam, the upper load transmission member, the upper temporary extension member, the jack device, the lower temporary extension member, and the lower load Both the transmission member and the second load sharing path connected to the lower beam are constructed. Therefore, along with the cutting of the column, it is possible to share and temporarily receive the load acting on the column by both the first load sharing route and the second load sharing route.
That is, even if the strength sufficient to receive the provisional load on the beam cannot be ensured, the insufficient provisional load can be received by each member of the first load sharing path. Even buildings that can't take a great deal can receive column loads temporarily.
On the other hand, even when sufficient strength cannot be ensured in the temporary support projecting member, it becomes possible to receive the insufficient temporary support load by each member of the second load sharing path, for example, the ceiling height is low. For example, a column load can be temporarily received even in a building in which the provisional extension member has to be made smaller.
Accordingly, it becomes possible to temporarily receive the load of the column corresponding to various environments, and it can be used for seismic isolation work such as attaching a seismic isolation device after cutting the column.
本発明の第4の特徴手段は、既設の柱の中間部を切断して免震装置を設置するにあたり、前記柱の切断予定箇所に作用する荷重を仮受けする荷重仮受け方法において、前記柱の切断予定箇所の上側と下側とに、横に張り出す状態に仮受け張出部材をそれぞれ設置し、上下の仮受け張出部材にわたってジャッキ装置を取り付け、上の仮受け張出部材とその上の梁との間、又は、下の仮受け張出部材とその下の梁との間に、荷重伝達自在な状態に荷重伝達部材を介在させた後、前記ジャッキ装置で両仮受け張出部材間に突っ張り力を作用させるところにある。 According to a fourth feature of the present invention, in the load provisional method for provisionally receiving a load acting on a planned cutting position of the column when the seismic isolation device is installed by cutting an intermediate part of the existing column, Temporary receiving overhanging members are installed on the upper side and the lower side of the planned cutting portion of each of the above, and a jack device is attached over the upper and lower temporary receiving overhanging members. After the load transmitting member is interposed between the upper beam or between the lower temporary support projecting member and the lower beam so that the load can be transmitted, both the temporary support projects are performed by the jack device. There is a place where a tensile force is applied between the members.
本発明の第4の特徴手段によれば、ジャッキ装置で両仮受け張出部材間に突っ張り力を作用させることにより、柱の上端部・上の仮受け張出部材・ジャッキ装置・下の仮受け張出部材・柱の下端部に連なる第1荷重分担経路と、上の梁と上の荷重伝達部材・上の仮受け張出部材・ジャッキ装置・下の仮受け張出部材・柱の下端部(又は、柱の上端部・上の仮受け張出部材・ジャッキ装置・下の仮受け張出部材・下の荷重伝達部材と下の梁)に連なる第2荷重分担経路が構築される。従って、柱の切断に伴っては、前記第1荷重分担経路と第2荷重分担経路との両方の経路で、柱に作用する荷重を分担して仮受けすることが可能となる。
即ち、下の梁(又は、上の梁)に仮受け荷重を受けるだけの強度が確保できない場合でも、不足する仮受け荷重分を、前記第1荷重分担経路の各部材によって受けることが可能となり、例えば、階高の制限から下の梁(又は、上の梁)の梁成を大きくとれないような建物でも、柱荷重を仮受けできるようになる。
一方、上の仮受け張出部材(又は、下の仮受け張出部材)に充分な強度が確保できないような場合でも、不足する仮受け荷重分を、前記第2荷重分担経路の各部材によって受けることが可能となり、例えば、天井高さが低い等の理由で上の仮受け張出部材(又は、下の仮受け張出部材)の成を小さくせざるを得ない建物でも、柱荷重を仮受けできるようになる。
従って、色々な環境に対応して柱の荷重の仮受けを実施できるようになり、柱を切断した後に免震装置を取り付ける等の免震化工事に役立てることが可能なる。
According to the fourth characteristic means of the present invention, the jack device applies a tensile force between the temporary support projecting members, so that the upper end portion of the column, the upper temporary support member, the jack device, and the lower temporary support member. The first load sharing path connected to the lower end of the support member / column, the upper beam and the upper load transmission member, the upper temporary support member, the jack device, the lower temporary support member, and the lower end of the column A second load sharing path that is continuous with the section (or the upper end of the column, the upper temporary support member, the jack device, the lower temporary support member, the lower load transmission member and the lower beam) is constructed. Therefore, along with the cutting of the column, it is possible to share and temporarily receive the load acting on the column by both the first load sharing route and the second load sharing route.
That is, even when the lower beam (or the upper beam) is not strong enough to receive the temporary load, the insufficient temporary load can be received by each member of the first load sharing path. For example, a column load can be temporarily received even in a building in which the beam of the lower beam (or the upper beam) cannot be made large due to the floor height limitation.
On the other hand, even when sufficient strength cannot be ensured for the upper temporary support overhang member (or the lower temporary support overhang member), the insufficient temporary load is reduced by each member of the second load sharing path. For example, even in buildings where the upper provisional overhanging member (or the lower temporary overhanging member) has to be made smaller because the ceiling height is low, etc. You will be able to accept it temporarily.
Accordingly, it becomes possible to temporarily receive the load of the column corresponding to various environments, and it can be used for seismic isolation work such as attaching a seismic isolation device after cutting the column.
以下に本発明の実施の形態を図面に基づいて説明する。尚、図面において従来例と同一の符号で表示した部分は、同一又は相当の部分を示している。 Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the parts indicated by the same reference numerals as those in the conventional example indicate the same or corresponding parts.
図1、図2は、本発明の荷重仮受け方法の一実施法によって柱1の荷重を仮受けしている建物要部の状態を示すもので、その荷重仮受け状態で、柱1の中間部を切断除去し、その除去跡に、免震装置2を設置して一体化を図ることで建物の免震化を叶えることが可能となる。そして、荷重の仮受けに伴っては、本発明の荷重仮受け装置3を、柱1及び梁6にわたって設置することで実施される。
FIG. 1 and FIG. 2 show the state of the main part of the building that is temporarily receiving the load of the
荷重仮受け方法について説明する。
[1] 図4(イ)に示すように、柱1の切断予定箇所Sの上側と下側とに、横に張り出す状態に仮受け張出部材4をそれぞれ設置する。
[2] 上下の仮受け張出部材4にわたってジャッキ装置5を取り付けて、図4(ロ)に示すように、そのジャッキ装置5で両仮受け張出部材4間に突っ張り力を作用させる。
[3] 図5(ハ)に示すように、上の仮受け張出部材4Aとその上の梁6Aとの間、及び、下の仮受け張出部材4Bとその下の梁6Bとの間に、荷重伝達自在な状態に荷重伝達部材7をそれぞれ介在させて設置する。
A method for temporarily receiving the load will be described.
[1] As shown in FIG. 4 (a), the temporary
[2] The
[3] As shown in FIG. 5 (C), between the upper
以上の荷重仮受け方法によれば、予め、ジャッキ装置5で上下の両仮受け張出部材4間に突っ張り力を作用させることで、柱1の上端部・上の仮受け張出部材4A・ジャッキ装置5・下の仮受け張出部材4B・柱の下端部に連なる第1荷重分担経路K1が構築され(図4(ロ)参照)、ジャッキ装置5による突っ張り力に相当した仮受け分担荷重を、前記第1荷重分担経路で受け持つことが可能となる。その後、上の仮受け張出部材4Aとその上の梁6Aとの間、及び、下の仮受け張出部材4Bとその下の梁6Bとの間に、荷重伝達自在な状態に荷重伝達部材7をそれぞれ介在させることで、上の梁6A・上の荷重伝達部材7A・上の仮受け張出部材4A・ジャッキ装置5・下の仮受け張出部材4B・下の荷重伝達部材7B・下の梁6Bに連なる第2荷重分担経路K2が構築される(図5(ハ)参照)。従って、柱1の切断に伴っては、前記第1荷重分担経路K1と第2荷重分担経路K2との両方の経路で、柱に作用する荷重を分担して仮受けすることが可能となる。
According to the load temporary receiving method described above, by applying a tension force between the upper and lower temporary
尚、本実施形態においては、前記柱1は、鉄筋コンクリートで構成されており、免震化に伴う応力アップに対処するために、断面を増加させることで補強が図られている(対象は、切断予定箇所S以外の範囲)。
In this embodiment, the
荷重仮受け装置3について説明する。
上述のとおり、前記柱1の切断予定箇所Sの上側と下側とに、横に張り出す状態にそれぞれ取付自在な上下一対の仮受け張出部材4A・4Bが設けられ、上下の仮受け張出部材4A・4Bにわたって取付自在なジャッキ装置5が設けられ、上の仮受け張出部材4Aとその上の梁6Aとの間、及び、下の仮受け張出部材4Bとその下の梁6Bとの間に、荷重伝達自在な状態に介在可能な荷重伝達部材7が設けられて構成してある。
た荷重仮受け装置。
The load
As described above, a pair of upper and lower temporary
Load receiving device.
前記仮受け張出部材4は、図3に示すように、鉄筋コンクリート製の複数のプレキャスト部材で構成され、それらを、前記柱1の外周に前記柱1の周方向に沿って環状に配置し、隣接する仮受け張出部材4どうしを、相互に貫通させたPC鋼棒8で引き寄せることで各仮受け張出部材4を近接させて、前記柱1に対して挟持状態に取り付けることができる。
組み付けられた仮受け張出部材群Gは、外形が略正方形で、中央部分に、前記柱1が位置する略八角形の貫通孔を備えた形状を呈する。
そして、柱1の周方向に隣接する仮受け張出部材4どうしには、複数のPC鋼棒8が貫通状態に設けられ、仮受け張出部材4の各端縁部にPC鋼棒8の両端部が各別に定着してある。
また、仮受け張出部材群Gにおける四つの角部分には、上下の仮受け張出部材群Gにわたる状態に前記ジャッキ装置5が設置される。
As shown in FIG. 3, the provisional overhanging
The assembled provisional overhanging member group G has a substantially square outer shape, and has a shape having a substantially octagonal through-hole in which the
A plurality of
Further, the
前記荷重伝達部材7は、本実施形態においては、スペースジャッキを用いてあり、梁6と仮受け張出部材4との間に位置させた状態で、双方に密接するまで伸長操作することで荷重伝達できる状態に設置することができる。
In the present embodiment, the
〔別実施形態〕
以下に他の実施の形態を説明する。
[Another embodiment]
Other embodiments will be described below.
〈1〉 荷重仮受け方法は、先の実施形態で説明したように、荷重伝達部材7を、上の荷重仮受け張出部材4Aとその上の梁6Aとの間、及び、下の荷重仮受け張出部材4Bとその下の梁6Bとの間それぞれに設置することに限るものではなく、例えば、図6(イ)、又は、図6(ロ)に示すように、何れか一方にのみ設置することでもよい。
〈2〉 また、先の実施形態で説明したように、上下の仮受け張出部材4にジャッキ装置5で突っ張り力を作用させてからた荷重伝達部材7を設置する方法に加えて、荷重伝達部材7を設置した後、更に、ジャッキ装置5を伸長操作するものであってもよい。
〈3〉 また、以上の各方法に替えて、図7に示すように、該当部分に当該荷重仮受け装置3を設置した後、ジャッキ装置5によって突っ張り力を作用させるようにしてもよい。
そして、この荷重仮受け方法においても、荷重伝達部材7は、上下何れか一方にのみ設置することでもよい。
〈4〉 当該荷重仮受け方法の対象となる建築構造は、先の実施形態で説明した鉄筋コンクリート造に限るものではなく、公知の他の建築構造であってもよい。
〈5〉 また、仮受け張出部材4や荷重伝達部材7の材質や形状等は、先の実施形態で説明したものに限るものではなく、変更することが可能である。
<1> As described in the previous embodiment, the load temporary receiving method is configured such that the
<2> Further, as described in the previous embodiment, in addition to the method of installing the
<3> Further, instead of the above methods, as shown in FIG. 7, after the load
In this temporary load receiving method, the
<4> The building structure that is the target of the temporary load receiving method is not limited to the reinforced concrete structure described in the previous embodiment, and may be another known building structure.
<5> The material, shape, and the like of the provisional overhanging
尚、上述のように、図面との対照を便利にするために符号を記したが、該記入により本発明は添付図面の構成に限定されるものではない。また、本発明の要旨を逸脱しない範囲において、種々なる態様で実施し得ることは勿論である。 In addition, as mentioned above, although the code | symbol was written in order to make contrast with drawing convenient, this invention is not limited to the structure of an accompanying drawing by this entry. In addition, it goes without saying that the present invention can be carried out in various modes without departing from the gist of the present invention.
1 柱
2 免震装置
4 仮受け張出部材
4A 上の仮受け張出部材
4B 下の仮受け張出部材
5 ジャッキ装置
6A 上の梁
6B 下の梁
7 荷重伝達部材
S 切断予定箇所
DESCRIPTION OF
Claims (4)
前記柱の切断予定箇所の上側と下側とに、横に張り出す状態に仮受け張出部材をそれぞれ設置し、上下の仮受け張出部材にわたってジャッキ装置を取り付け、前記ジャッキ装置で両仮受け張出部材間に突っ張り力を作用させた後、上の仮受け張出部材とその上の梁との間、及び、下の仮受け張出部材とその下の梁との間に、荷重伝達自在な状態に荷重伝達部材をそれぞれ介在させ、その後に前記ジャッキ装置を更に伸長操作する荷重仮受け方法。 In installing a seismic isolation device by cutting an intermediate part of an existing column, a load provisional method for provisionally receiving a load acting on the planned cutting position of the column,
Temporary receiving overhanging members are installed on the upper side and the lower side of the post-scheduled portion of the pillar so as to project laterally, and a jack device is attached over the upper and lower temporary receiving overhanging members. After applying a tensile force between the overhang members, load transmission is performed between the upper temporary support overhang member and the upper beam, and between the lower temporary support overhang member and the lower beam. freely state respectively by interposing a load transmission member, the further extension operation to that load temporary supporting method then the jack device.
前記柱の切断予定箇所の上側と下側とに、横に張り出す状態に仮受け張出部材をそれぞれ設置し、上下の仮受け張出部材にわたってジャッキ装置を取り付け、前記ジャッキ装置で両仮受け張出部材間に突っ張り力を作用させた後、上の仮受け張出部材とその上の梁との間、又は、下の仮受け張出部材とその下の梁との間に、荷重伝達自在な状態に荷重伝達部材を介在させ、その後に前記ジャッキ装置を更に伸長操作する荷重仮受け方法。 In installing a seismic isolation device by cutting an intermediate part of an existing column, a load provisional method for provisionally receiving a load acting on the planned cutting position of the column,
Temporary receiving overhanging members are installed on the upper side and the lower side of the post-scheduled portion of the pillar so as to project laterally, and a jack device is attached over the upper and lower temporary receiving overhanging members. After applying a tensile force between the overhang members, load transfer between the upper temporary support overhang member and the upper beam or between the lower temporary support overhang member and the lower beam freely state is interposed load transmission member, further extension operation to that load temporary supporting method then the jack device.
前記柱の切断予定箇所の上側と下側とに、横に張り出す状態に仮受け張出部材をそれぞれ設置し、上下の仮受け張出部材にわたってジャッキ装置を取り付け、上の仮受け張出部材とその上の梁との間、及び、下の仮受け張出部材とその下の梁との間に、荷重伝達自在な状態に荷重伝達部材をそれぞれ介在させた後、前記ジャッキ装置で両仮受け張出部材間に突っ張り力を作用させる荷重仮受け方法。 In installing a seismic isolation device by cutting an intermediate part of an existing column, a load provisional method for provisionally receiving a load acting on the planned cutting position of the column,
Temporary receiving overhanging members are installed on the upper side and the lower side of the post-scheduled portion of the column in a state of extending laterally, and a jack device is attached over the upper and lower temporary receiving overhanging members. After the load transmitting member is interposed between the lower temporary support projecting member and the lower beam so that the load can be transmitted, both jacks are used. A temporary load receiving method in which a tension force is applied between the receiving and extending members.
前記柱の切断予定箇所の上側と下側とに、横に張り出す状態に仮受け張出部材をそれぞれ設置し、上下の仮受け張出部材にわたってジャッキ装置を取り付け、上の仮受け張出部材とその上の梁との間、又は、下の仮受け張出部材とその下の梁との間に、荷重伝達自在な状態に荷重伝達部材を介在させた後、前記ジャッキ装置で両仮受け張出部材間に突っ張り力を作用させる荷重仮受け方法。 In installing a seismic isolation device by cutting an intermediate part of an existing column, a load provisional method for provisionally receiving a load acting on the planned cutting position of the column,
Temporary receiving overhanging members are installed on the upper side and the lower side of the post-scheduled portion of the column in a state of extending laterally, and a jack device is attached over the upper and lower temporary receiving overhanging members. A load transmission member interposed between the lower temporary support projecting member and the lower beam and the lower beam so that the load can be transmitted. A temporary load receiving method in which a tension force is applied between the overhang members.
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JP5023388B2 (en) * | 2007-06-19 | 2012-09-12 | 間瀬建設株式会社 | Existing column cutting and holding method and load receiving member |
JP5378896B2 (en) * | 2009-07-09 | 2013-12-25 | 戸田建設株式会社 | Seismic isolation method for existing buildings |
CN103452328B (en) * | 2013-07-08 | 2016-01-20 | 中冶天工上海十三冶建设有限公司 | Post brutal bracing means and method is subtracted for reinforced concrete member |
CN103698219B (en) * | 2013-12-24 | 2015-11-11 | 中国矿业大学 | Self-equilibrating door frame anti-earth's surface deformation experiment device |
CN103698148B (en) * | 2013-12-24 | 2015-12-30 | 中国矿业大学 | Surface deformation resistance experimental method for self-balance portal |
JP6208090B2 (en) * | 2014-08-07 | 2017-10-04 | 株式会社奥村組 | Temporary support structure for seismic isolation work and seismic isolation method for existing buildings |
JP6628664B2 (en) * | 2016-03-29 | 2020-01-15 | 株式会社奥村組 | Temporary support structure for existing column axial force |
JP7009724B2 (en) * | 2016-07-08 | 2022-01-26 | 株式会社竹中工務店 | Column-beam frame repair method and repair column-beam frame |
KR101891942B1 (en) * | 2018-01-16 | 2018-08-27 | 송병표 | Earthquake reinforcement method of existing structure |
CN114482592A (en) * | 2021-11-26 | 2022-05-13 | 北京建工四建工程建设有限公司 | Belt corridor joist post pulling transformation construction method |
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