JP6435576B2 - Construction method for substructure including crossbar - Google Patents

Description

  The present invention relates to a technique related to a construction method for a foundation structure including a support pile and a foundation slab.

  With foundation work, when a structure such as a building, bridge, or dam is built on the ground as the foundation stone of the structure, vertical load due to the weight of the structure itself, earthquake, wind, etc. are given to the structure This refers to the work of forming a workpiece to transmit the horizontal load to the ground.

  Detailed explanation is as follows. The foundation structure by foundation work is mainly composed of a support pile installed in the ground and a foundation slab above the support pile. The support pile is drilled in the ground using drilling equipment such as an auger screw, and cement milk is injected into the drill hole, and then the support pile is inserted and tapped. After this, the support pile is firmly fixed to the ground by additionally filling cement milk. After the support pile is installed on the ground, reinforcing bars for the foundation slab are placed on top of the support pile. When the reinforcement is finished, the foundation slab is completed by placing foundation concrete. The support pile and the foundation slab thus constructed transmit the load to the ground while supporting the load in the vertical direction and the horizontal direction.

  A foundation has been devised that is excellent in earthquake resistance by installing different types of support piles (Japanese Patent Laid-Open No. 2010-209605). However, according to this foundation, it is necessary to prepare multiple types of support piles, and it is necessary to select a support pile for each place where the support piles are installed. There is a risk.

  The inventor of the present invention has long studied the construction method for increasing the supporting force against the vertical load and horizontal load of such a substructure, and has completed the present invention after trial and error.

JP 2010-209605 A

  Here, the technical problem of the present invention is clear. An object of the present invention is to provide a method for constructing a foundation structure that can enhance the horizontal and vertical bearing force of the upper portion of the support pile that supports the foundation slab.

  The support force is increased by connecting the support piles with a cross bar and connecting the support piles with the foundation slab.

  Another object of the present invention is to provide a method for constructing a substructure that facilitates connection of a crossbar between support piles and connection of a crossbar between a support pile and a foundation slab.

  On the other hand, other objects not explicitly stated in the present invention are additionally considered within the scope of the following detailed description and the effects that can be easily inferred from the effects.

  In order to solve the above-described problems, a first aspect of the present invention includes a plurality of support piles installed in the ground at regular intervals, and a foundation slab attached to the upper portion of the support pile and having reinforcing bars arranged therein. A first coupling band, a second coupling band, and a third coupling band are coupled to the support pile at regular intervals, and one end is hinge-coupled to the second coupling band A first crossbar that is connected to a third crossbar and a second crossbar that is hinged to one end of the third binding band, and the first crossbar and the second crossbar are folded to the support pile side. A support pile installation stage in which the plurality of support piles are installed in the ground; a reinforcing bar reinforcing stage in which the first cross bar and the second cross bar are hinged and adjusted so as not to interfere with the reinforcing bar arrangement And said 1 crossbar is hinged, the other end of the first crossbar is connected to the reinforcing bar, the second crossbar is hinged, and the other end of the second crossbar is adjacent to the support pile. And a support pile reinforcing step connected to the first binding band. A method for constructing a substructure is provided.

  The first crossbar and the second crossbar may be hinged to the second binding band and the third binding band, respectively.

  The support pile may include any one of a PHC pile, a steel pipe pile, and an H pile.

  The first crossbar and the second crossbar may include any one of a steel wire, a steel bar, a steel pipe, a carbon fiber pipe, and a carbon fiber bar.

The first coupling band, the second coupling band, and the third coupling band are formed as a clamp type, and can be coupled to the support pile by bolt tightening.

  According to the substructure construction method according to one embodiment of the present invention, the horizontal and vertical support force of the upper portion of the support pile can be increased.

  It is excellent in earthquake resistance by increasing the supporting force, and can be carried out with a wide interval between the supporting piles, which contributes to a reduction in the number of supporting piles.

  Moreover, according to the foundation construction method according to the present invention, the connection of the crossbar between the support piles and the connection of the crossbar between the support pile and the foundation slab are facilitated.

  On the other hand, even if the effects are not explicitly mentioned here, the effects described in the following specification and the provisional effects expected from the technical features of the present invention are described in the specification of the present invention. It is added that it is handled in the same way as the contents.

It is the figure which showed the foundation structure manufactured by the foundation structure construction method containing the cross bar concerning one Example of this invention. It is the figure which showed the process of the foundation structure construction method containing the cross bar concerning one Example of this invention. It is the figure which showed installing the support pile which has a 1st crossbar and a 2nd crossbar in the ground. It is the figure which showed arranging the reinforcing bar for foundation slabs on the installed support pile upper part. It is the figure which showed connecting the 1st crossbar couple | bonded with the support pile with a reinforcing bar. It is the figure which showed that the joint band and crossbar of the support pile were hinge-joined. It is an example of a binding band and is a diagram showing a clamp type.

  The accompanying drawings are provided as a reference for understanding the technical idea of the present invention, and the scope of rights of the present invention is not limited thereby.

  In the following description of the present invention, if it is determined that the related known functions are matters that are obvious to an engineer in this field and that the gist of the present invention can be unnecessarily blurred, Omit.

  The terms first, second, etc. are used to describe various components, but the components should not be limited by the terms. The terms are only used to distinguish one component from another.

  The terms used in the present application are merely used to describe particular embodiments, and are not intended to limit the present invention. A singular expression includes a plurality of expressions unless the context clearly dictates otherwise. In this application, terms such as “comprising” or “having” are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described in the specification. It should be understood that it does not exclude the possibility of the presence or addition of one or more other features or numbers, steps, actions, components, parts or combinations thereof.

  Hereinafter, embodiments of a method for constructing a substructure including a crossbar according to the present invention will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, the same or corresponding components are denoted by the same reference numerals. A duplicate explanation is omitted.

  FIG. 1 is a view showing a foundation structure manufactured by a foundation structure construction method including a crossbar according to an embodiment of the present invention. As shown in FIG. 1, a foundation structure manufactured by a foundation structure construction method including a cross bar according to the present invention includes a foundation slab S, a plurality of support piles 100 that support the foundation slab S, and a support pile 100. Including a plurality of crossbars.

  Through such a structure, the support force of the support pile 100 against horizontal and vertical loads can be increased. Through the improvement of the bearing capacity against horizontal and vertical loads, it is excellent in earthquake resistance, and the construction interval between the support piles 100 can be widened.

  Hereinafter, the construction method of such a foundation structure is explained in detail. FIG. 2 is a diagram showing a process of a substructure construction method including a crossbar according to an embodiment of the present invention. As shown in FIG. 2, the substructure construction method including the cross bar according to the present invention includes a support pile installation stage, a reinforcing bar reinforcement stage, a support pile reinforcement stage, and a concrete placing stage.

  In the support pile installation stage, a plurality of support piles 100 are installed in the ground. Each support pile 100 is installed at regular intervals. Three binding bands are bonded to each of the plurality of support piles 100. The support pile 100 is preferably any one of PHC pile, steel pipe pile, and H pile. In addition, various support piles 100 fall within the scope of the present invention.

  FIG. 3 is a view showing that the support pile 100 having the first crossbar 200 and the second crossbar 300 is installed in the ground.

  As shown in FIG. 3, three bonding bands are bonded to the upper portion of each support pile 100 at regular intervals. The three coupling bands are a first coupling band 110, a second coupling band 120, and a third coupling band 130 from the top to the bottom, respectively.

  FIG. 7 is an example of a binding band and is a diagram showing a clamp type. Although the double bolt B type fixing clamp K is disclosed in FIG. 7, the scope of rights of the present invention is not limited to this. Various clamps such as automatic clamp, deformed clamp, orthogonal clamp, single clamp, orthogonal automatic clamp, steel beam clamp, etc. can be applied.

  Such a clamp K not only can be easily coupled to the support pile 100, but also the coupling position can be easily changed in some cases. That is, after loosening the bolt B of the clamp K and adjusting the position, the bolt B can be tightened again to fix the position.

  Among the three coupling bands, the second and third coupling bands from the top, that is, the second coupling band 120 and the third coupling band 130 are each connected with a crossbar. The first crossbar 200 is connected to the second coupling band 120. The first crossbar 200 is connected to the second coupling band 120 and the foundation slab S. More precisely, the first crossbar 200 is connected to the second coupling band 120 and the reinforcing bar 400 in which the foundation slab S is arranged. In short, the configuration of the first crossbar 200 connects the support pile 100 and the foundation slab S.

  The second crossbar 300 is connected to the third coupling band 130. The second crossbar 300 connects the third binding band 130 and the first binding band 110 of the adjacent support pile 100. Adjacent support piles 100 are connected to each other through the configuration of the second crossbar 300.

  As can be seen from FIG. 3, the second crossbar 300 is relatively longer than the first crossbar 200. This is because the first crossbar 200 is connected to the upper reinforcing bar 400 and the second crossbar 300 is connected to the adjacent support pile 100.

  At this time, the first crossbar 200 and the second crossbar 300 are hinge-coupled to the coupling band of the support pile 100. FIG. 6 is a view showing a state in which the coupling band of the support pile 100 and the cross bar are hinge-coupled.

  The first crossbar 200 is hinged to the second coupling band 120, and the second crossbar 300 is hinged to the third coupling band 130. When the support pile 100 is installed in the ground, the first crossbar 200 hinged to the second coupling band 120 and the second crossbar 300 hinged to the third coupling band 130 are folded to the support pile 100 side. When the support piles 100 are all installed in the ground in the folded state, the crossbars are folded when the cross bars are connected to the reinforcing bars 400 of the foundation slab S or the first binding bands 110 of the adjacent support piles 100. Expand the bars and connect them.

  The second crossbar 300 is connected from the third binding band 130 of the support pile 100 to the first binding band of the adjacent support pile, that is, the adjacent support pile is connected diagonally by the second crossbar 300. For this reason, the length of the second crossbar 300 must be longer than the distance between the two support piles 100. Therefore, after constructing the support pile 100 in the ground with the second crossbar 300 folded, the work efficiency can be improved by spreading the second crossbar 300 and connecting the support piles 100.

  The first crossbar 200 is hinge-coupled to the second coupling band, so that the connection portion to the reinforcing bar 400 can be freely adjusted when the basic slab S is connected to the reinforcing bar 400.

  As the first crossbar 200 and the second crossbar 300, a high-strength steel wire, a high-strength steel rod, a high-strength steel tube, a high-strength carbon fiber tube, a high-strength carbon fiber rod, or the like is preferable. Such a steel wire or steel bar should be made of a material that is sufficiently strong so that it can withstand the vertical load of the upper foundation slab S and the horizontal load due to wind, earthquake, etc., and transmit it to the support pile 100. There must be.

  FIG. 4 is a diagram showing that reinforcing bars 400 for the foundation slab S are arranged on the upper portion of the installed support pile 100. After each support pile 100 to which the first crossbar 200 and the second crossbar 300 are coupled is installed in the ground, the reinforcing bar 400 for the foundation slab S is arranged on the support pile 100. The plurality of reinforcing bars 400 can be arranged not only in a plurality of rows at regular intervals but also in a cross arrangement and a layer arrangement. Such bar arrangement of the reinforcing bar 400 can be adjusted according to various field conditions. At this time, the first crossbar 200 and the second crossbar 300 are hinged and can be adjusted so that the crossbar does not receive interference from the reinforcing bar 400.

  FIG. 5 is a view showing that the first crossbar 200 coupled to the support pile 100 is coupled to the reinforcing bar 400. As shown in FIG. 5, the first crossbar 200 is connected to the reinforcing bar 400 by a fastener 410 that can be fixed to the reinforcing bar 400. The fastener 410 may be connected to the first crossbar 200 across one reinforcing bar 400 or two reinforcing bars 400 arranged in parallel as shown in FIG.

  After the reinforcing bar 400 is arranged, the fastener 410 is fixed to the arranged reinforcing bar 400, and thereafter, the first crossbar 200 is connected to the fastener 410 to connect the support pile 100 and the reinforcing bar 400. The first crossbar 200 and the reinforcing bar 400 are coupled by various fastening methods. The 1st crossbar 200 and the reinforcing bar 400 can also be bound by welding or a binding wire.

  The second crossbar 300 may be connected to the first binding band 110 by various methods.

  After completing the support pile reinforcement step of reinforcing the support pile 100 through the connection process of the first crossbar 200 and the reinforcing bar 400 and the connection process of the second crossbar 300 and the first coupling band 110, the foundation slab S is subjected to the foundation concrete. The concrete placement stage for placing C is advanced. In this way, the placed foundation concrete C can further strengthen the binding between the first crossbar 200 and the reinforcing bar 400.

  Thus, the support pile 100 is installed in the ground, the reinforcing bar 400 is arranged on the upper part of the installed support pile 100, the connection between the reinforcing bar 400 and the first crossbar 200, and the second crossbar 300. The foundation slab S can be completed by driving the foundation concrete C after connecting the first binding bands 110 of the adjacent support piles.

  The protection scope of the present invention is not limited to the description and expression of the embodiments explicitly described above. Further, it is added again that the protection scope of the present invention is not limited by obvious changes and substitutions in the technical field to which the present invention belongs.

S: foundation slab 100: support pile 110: first coupling band 120: second coupling band 130: third coupling band 200: first crossbar 300: second crossbar 400: rebar 410: fastener B: bolt K: Clamp C: Foundation concrete

Claims (4)

A method of constructing a foundation structure including a plurality of support piles installed in the ground at regular intervals, and a foundation slab attached to the upper portion of the support pile and to which reinforcing bars are arranged,
A first crossbar having a first coupling band, a second coupling band, and a third coupling band coupled to the support pile at regular intervals, and one end hinge-coupled to the second coupling band, and the third coupling band A second crossbar, one end of which is hinged,
A support pile installation step of installing the plurality of support piles in the ground in a state where the first crossbar and the second crossbar are folded to the support pile side;
After the support pile installation step, the first crossbar and the second crossbar are hinged and adjusted so as not to interfere with the reinforcing bar arrangement, and the reinforcing bars fix the fasteners to the arranged reinforcing bars. Reinforcement stage; and
After the reinforcing bar arrangement step, the first crossbar is hinged and the other end of the first crossbar is connected to the fastener to connect to the reinforcing bar, and the second crossbar is hinged. A support pile reinforcing step of moving and connecting the other end of the second crossbar to the first binding band of an adjacent support pile;
With
The first crossbar is a member that connects the support pile and the reinforcing bar,
The second crossbar is a member for connecting a support pile and a support pile adjacent to the support pile.
  The foundation structure construction method according to claim 1, wherein the support pile includes any one of a PHC pile, a steel pipe pile, and an H pile.   2. The substructure construction according to claim 1, wherein the first crossbar and the second crossbar include any one of a steel wire, a steel bar, a steel pipe, a carbon fiber pipe, and a carbon fiber bar. Method.   The foundation construction method according to claim 1, wherein the first coupling band, the second coupling band, and the third coupling band are formed in a clamp type and can be coupled to the support pile by bolt tightening.

Images