JP2019052458A - Roof tension rod structure - Google Patents

Abstract

To provide a tension rod structure using round steel etc. which can prevent the deflection of a tension rod when a projecting top of a projecting roof moves downward without exerting unnecessary stress on the cantilever base end of the projecting roof.SOLUTION: The tension rod structure of the roof in which a tension rod 10 is arranged over a projecting tip 3a of a projecting roof 3 and a lower base 5 by the cantilever support to prevent the upward movement of the projecting tip 3a, comprises a compression force avoidance mechanism 15 to avoid the action of the compression force on the tension rod 10 when the projecting tip 3a moves downward.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a tension rod structure for a roof in which a tension rod is disposed across a protruding tip portion and a lower base portion of a jumping roof supported by a cantilever to prevent upward movement of the protruding tip portion. .

In such a tension rod structure, a thin round steel or the like that is not visually conspicuous is used as the tension rod, and the upper end of the tension rod made of such round steel is protruded and fixed to the tip, and the lower end is the base. It is a general conventional structure that is fixed to the side.
However, since a thin round steel or the like is used as the tension rod, it is visually inconspicuous, but has a characteristic that it is very easy to bend. Therefore, in the conventional structure in which the upper and lower ends of the tension rod are fixed together, for example, when the protruding tip of the protruding roof moves downward due to snow accumulation, the tension rod is bent. To prevent bending of the tension rod, it is possible to apply an excessive initial tension to the tension rod, but in that case, unnecessary stress acts on the cantilever base end of the jumping roof. Will do.
By the way, in a jumping roof with cantilever support, a technology to arrange auxiliary struts across the jumping tip and the foundation to cope with upward movement during strong winds and downward movement during snowfall at the jumping tip. Is also known. However, in a structure using auxiliary struts, a strong and conspicuous steel pipe or the like is used as the auxiliary struts. Therefore, the tension rod structure using a round steel that is easy to bend becomes a different and different technology (for example, Patent Document 1).

Japanese Patent No. 5966241 (see particularly paragraph [0022])

  It is an object of the present invention to provide a tension rod structure using round steel or the like when the protruding tip of the protruding roof moves downward without applying unnecessary stress to the cantilever base end of the protruding roof. Another object of the present invention is to provide a tension rod structure that can prevent the tension rod from being bent.

  A first characteristic configuration of the present invention is a roof in which a tension rod is disposed across a protruding tip portion and a lower base portion of a protruding roof that is cantilevered to prevent upward movement of the protruding tip portion. The tension rod structure is provided with a compression force avoiding mechanism for avoiding the action of the compression force on the tension rod when the jumping tip portion moves downward.

According to this configuration, for example, when the tip end of the jumping roof is covered with wind and tries to move upward in a strong wind, the tension rod disposed between the tip end and the base portion is , The upward movement of the protruding tip is prevented.
And, for example, even if the jumping tip moves downward during snow accumulation, it is equipped with a compression force avoiding mechanism that avoids the action of the compression force on the tension rod, so the compression force does not act on the tension rod Therefore, it is possible to prevent the tension rod from being bent without applying unnecessary stress to the cantilever base end portion of the protruding roof.

  According to a second characteristic configuration of the present invention, the compression force avoiding mechanism includes a rod support member continuously provided on the base portion having an insertion hole through which a lower portion of the tension rod is inserted, and a lower portion of the tension rod. However, it is in the point which avoids the effect | action of the compressive force to the said tension rod by inserting and moving the inside of the said insertion hole downward.

According to this configuration, since the compression force avoiding mechanism is configured by a rod support member having an insertion hole through which the lower portion of the tension rod is inserted, the structure is relatively simple and construction is easy.
In addition, when the protruding tip part moves downward, the lower part of the tension rod is moved downward in the insertion hole following the downward movement, thereby avoiding the action of compressive force on the tension rod. Prevention of the bending of the tension rod during the downward movement of the protruding tip is further ensured.

  According to a third characteristic configuration of the present invention, the insertion hole is a through hole penetrating the rod support member in the vertical direction, and the tension rod extends downward through the through hole. The point is that a compression spring is interposed between the retaining member fixed to the protruding end and the rod support member.

According to this configuration, the retaining member is fixed to the tension rod extending below the through hole provided in the rod supporting member, and the compression spring is interposed between the retaining member and the rod supporting member. Because there is, assembly construction is easy.
And by appropriately setting the fixing position of the retaining member with respect to the tension rod, it is possible to easily adjust the spring force of the compression spring, especially when a screwed nut is used as the retaining member. Fine adjustment of the spring force is also facilitated.

  According to a fourth characteristic configuration of the present invention, the tension rod is divided into two rod parts, an upper rod part and a lower rod part, at the lower part thereof, and the upper and lower rod parts are connected by a turnbuckle. The length of the tension rod is configured to be adjustable.

According to this configuration, the tension rod is composed of two rod parts, and the entire length can be adjusted by the turnbuckle, so the construction is simple and the tension rod length can be adjusted after construction. It can be done easily.
Moreover, since the turnbuckle is positioned below the tension rod, the length adjustment work of the tension rod can be easily performed.

  A fifth characteristic configuration of the present invention is that the compression force avoiding mechanism and the turnbuckle are disposed below a flooring.

  According to this configuration, the compressive force avoiding mechanism and the turnbuckle are both disposed below the flooring, so that the appearance is not complicated and the structure is clean. Expected to prevent misoperation.

Longitudinal perspective view of lobby with jumping roof Longitudinal side view of a lobby with a raised roof Longitudinal side view showing details of main parts of tension rod structure Longitudinal side view showing the operation of the main part of the tension rod structure Cross-sectional plan view showing details of essential parts of tension rod structure

An embodiment of a roof tension rod structure according to the present invention will be described with reference to the drawings.
The tension rod structure according to the present invention is applied to a support structure for a jumping roof 3 of a lobby 2 in a lobby 2 arranged on the front surface of the building 1, for example, as shown in FIGS.
As shown in FIG. 2, the building 1 is composed of a large number of frame bodies 4 made of steel frames such as various types of steel and is installed on a large number of foundation parts 5, and a floor slab 6 is disposed between the foundation parts 5. The floor material 7 is laid on the floor slab 6. On the front (front) of the lobby 2, as shown in FIG. 1, a transparent tempered double-glazed glass 8 that extends over the protruding tip 3 a of the protruding roof 3 and the flooring 7 extends along the front of the lobby 2. A plurality of sheets are disposed in the horizontal direction, and as shown in FIG. 5, a transparent tempered glass retaining wall 9 is disposed at a connection portion of the multilayer glass 8. In addition, although not shown in figure, the same multilayer glass and a retaining wall are arrange | positioned also on the right-and-left both sides (the upper surface side and back surface side of the paper surface in FIG. 2) of the jumping roof 3.

As shown in FIG. 2, the pop-up roof 3 of the lobby 2 has a base end 3 b that is cantilevered with respect to the housing 4 of the building 1. A tension rod 10 is disposed across the portion 5. The tension rod 10 is used to prevent the jumping roof 3 and its tip 3a from being blown up by strong winds and trying to move upward, for example, round steel having a diameter of about 15 mm or appropriate Consists of wire rods. That is, the tension rod 10 is visually inconspicuous from the viewpoint of appearance, and therefore, a thin material that is very flexible is used. As shown in FIG. One by one.
As shown in FIG. 2, each tension rod 10 is disposed between the jumping tip 3 a and directly above the base portion 5 positioned below, and the upper end of the tension rod 10 is the jumping tip. It penetrates the ceiling material etc. of the part 3a, and it attaches to the protrusion front-end | tip part 3a by screwing the double nut 11 in the penetration upper end part.

As shown in FIG. 5, the lower end portion of each tension rod 10 penetrates the floor material 7 in the vertical direction and extends downward, and further, below the floor material 7 as shown in FIGS. 3 and 4. The plate-like rod support member 12 provided extends through the through-hole 13 drilled in the vertical direction and extends downward. The rod support member 12 is a plate-like member that constitutes the upper surface portion of the rod support 14 having a U-shaped cross section, and is connected to the base 5 of the building 1 via the rod support 14 and the like. The rod support member 12 having the through hole 13 constitutes a part of the compression force avoiding mechanism 15 that avoids the action of the compression force on the tension rod 10 as will be described in detail later.
As shown in FIGS. 2 and 4, the rod support 14 is disposed inside the air conditioning duct 16 disposed along the base portion 5 below the flooring 7 at a predetermined position corresponding to the tension rod 10. Each rod support 14 and the air conditioning duct 16 are accommodated and fixed to the base portion 5 by anchor bolts 17, and as a result, the rod support member 12 is built via the rod support 14 and the air conditioning duct 16. 1 base portion 5 is provided continuously.

As shown in FIG. 4, each tension rod 10 is divided into two rod parts, an upper rod part 10a and a lower rod part 10b, at the lower part thereof, and the upper and lower rod parts 10a, 10b are turnbuckles 18. Connected.
That is, each tension rod 10 has its upper end attached to the protruding tip portion 3a, and is suspended from the protruding tip portion 3a and terminates between the flooring 7 and the rod support member 12, and the upper rod portion 10a. And the lower rod portion 10b penetrating the through hole 13 of the rod support member 12 in the vertical direction, the lower rod portion of the upper rod portion 10a and the upper end portion of the lower rod portion 10b are turnbuckles. 18 are respectively screwed together. And the rotation prevention nut 19 is fixed to the upper part of the upper rod portion 10a near the turn buckle 18 by, for example, welding, and the turn buckle 18 is rotated while the nut 19 is held by various tools. Thus, the entire length of each tension rod 10 can be freely adjusted.

As shown in FIGS. 3 and 4, the lower rod portion 10 b constituting each tension rod 10 extends downward through the through hole 13 of the rod support member 12, and extends downwardly. A coiled compression spring 20 is externally fitted, and a retaining nut 21 and a lock nut 22 as a retaining member are screwed together. That is, the compression spring 20 is interposed between the lower surface of the rod support member 12 and the retaining nut 21. Therefore, when the jumping tip 3a of the jumping roof 3 tries to move upward, the tension rod 10 prevents the jumping tip 3a from moving upward while effectively utilizing the elastic force of the compression spring 20. When the popping tip 3a moves downward, the downward movement of the tension rod 10 is allowed by effectively using the elastic force of the compression spring 20. Thereby, the action of the compressive force on the tension rod 10 is avoided, and the rod support member 12, the compression spring 20, the retaining nut 21 and the like provided with the through hole 13 are provided with the compressive force avoiding mechanism 15 on the tension rod 10. Configure.
Then, as shown in FIGS. 4 and 5, an inspection lid 24 integrally provided with an air conditioning outlet 23 is detachably installed in the upper opening of the air conditioning duct 16. As shown in FIG. 1, a plurality of such lids 24 are installed along the air conditioning duct 16, and the inside of the air conditioning duct 16 is further compressed by removing the lids 24 at necessary places. It is used as an inspection port for maintenance inspection of the force avoidance mechanism 15.

Next, regarding the tension rod structure of the roof according to the present invention, the operation of the tension rod 10 and the compression force avoiding mechanism 15 will be described.
First, in the initial setting, the position of the retaining nut 21 is determined by rotating the retaining nut 21 and the lock nut 22 that are screwed into the lower rod portion 10 b of each tension rod 10. Further, a rotation prevention nut 19 that is fixed to the upper rod portion 10a of each tension rod 10 is appropriately held by a tool, and the turnbuckle 18 that connects the upper rod portion 10a and the lower rod portion 10b is operated to rotate. The total length of 10 is appropriately adjusted, and the initial elastic force of the compression spring 20 acting on each tension rod 10 is also adjusted. However, regarding this initial setting, it is also possible to adjust the elastic force of the compression spring 20 by rotating the retaining nut 21 after adjusting the length of the tension rod 10 by rotating the turnbuckle 18 first. is there.
Thus, by adjusting the length of the tension rod 10, adjusting the initial elastic force of the compression spring 20, and further adjusting the level of the jumping roof 3 by rotating the turnbuckle 18 and rotating the retaining nut 21. Make the necessary initial settings.

In this set state, when the protruding tip 3a of the protruding roof 3 is blown up by strong wind and tries to move upward, the compression spring 20 is contracted as shown in FIG. Each tension rod 10 attached to the protruding tip 3a prevents the upward movement of the protruding tip 3a.
Conversely, when the jumping tip 3a moves downward due to snow accumulation, the tension of the tension rod 10 and the elastic restoring force of the compression spring 20 cause the tension of each tension while the compression spring 20 extends as shown in FIG. The rod 10 follows the downward movement of the protruding tip 3a, and moves downward through the through hole 13 of the rod support member 12, as indicated by the arrow in the figure. That is, each compression force avoiding mechanism 15 avoids the action of the compression force on each tension rod 10 and prevents each tension rod 10 from bending.

[Another embodiment]
(1) In the previous embodiment, the tension rod 10 was divided into two upper and lower rod portions 10a and 10b and connected by the turnbuckle 18. If there is no need for adjustment, the tension rod 10 can be constituted by a single rod. In this case, the turn buckle 18 and the rotation prevention nut 19 are not required.
Further, the lower portion of the tension rod 10 extends to the lower portion of the rod support member 12, and the compression spring 20 externally fitted to the extended end portion is secured by a retaining nut 21 which is an example of a retaining member. Although the structure to hold | maintain was shown, it can replace with the nut 21 for the prevention, for example, can also use various members which can be position-change-fixed along the axial center direction of the tension rod 10 as a prevention member. Furthermore, various members can be fixed to the tension rod 10 by welding and used as a retaining member, and the specific configuration of the retaining member can be appropriately changed.

(2) In the previous embodiment, the lower portion of the tension rod 10 has been configured to extend downward through the through hole 13 formed in the rod support member 12, but instead of the through hole 13. It can also be carried out by providing a bottomed insertion hole whose bottom is closed. That is, the lower part of the tension rod 10 is inserted into the bottomed insertion hole, and the downward part of the tension rod 10 is inserted and moved downward in the insertion hole when the protrusion tip 3a moves downward. In addition, it can be configured to avoid the action of the compressive force on the tension rod 10. In that case, it is preferable to interpose a tension spring that pulls the tension rod 10 downward between the bottom of the insertion hole and the tension rod 10, but it is also possible to implement without using the tension spring.
Similarly, the compression force avoiding mechanism 15 shown in the previous embodiment can also be implemented without using the compression spring 20, and in this way, the compression force that avoids the action of the compression force on the tension rod 10. The avoidance mechanism 15 can be variously modified and various configurations can be employed. Further, the location where the compression force avoiding mechanism 15 is disposed is not limited to the position below the flooring 7 and may be appropriately disposed above the flooring 7 depending on the surrounding situation.

DESCRIPTION OF SYMBOLS 3 Jumping roof 3a Jumping tip part 5 Base part 7 Flooring material 10 Tension rod 10a Upper rod part 10b Lower rod part 12 Rod support member 13 Through-hole 15 Compression force avoiding mechanism 18 Turn buckle 20 Compression spring 21 Holding member

Claims (5)

A tension rod structure for the roof that prevents the upward movement of the protruding tip by arranging a tension rod across the protruding tip of the protruding roof and the lower base by cantilever support,
A tension rod structure for a roof provided with a compression force avoiding mechanism for avoiding an action of a compression force on the tension rod when the jumping tip portion moves downward.   The compression force avoiding mechanism has an insertion hole through which the lower part of the tension rod is inserted, and is provided with a rod support member connected to the base part, and the lower part of the tension rod is inserted downward in the insertion hole. The roof tension rod structure according to claim 1, wherein the tension rod structure of the roof avoids the action of compressive force on the tension rod by moving.   The insertion hole is a through-hole penetrating the rod support member in the vertical direction, and the tension rod extends downward through the through-hole, and is fixed to the extended end portion of the retaining member. The roof tension rod structure according to claim 2, wherein a compression spring is interposed between the rod support member and the rod support member.   The tension rod is divided into two rod parts, an upper rod part and a lower rod part at the lower part thereof, and the length of the tension rod can be adjusted by connecting the upper and lower rod parts with a turnbuckle. The roof tension rod structure according to any one of claims 1 to 3.   The tension rod structure for a roof according to claim 4, wherein the compression force avoiding mechanism and the turnbuckle are disposed below a flooring.

Images