US 3768216 A
Roof supporting construction comprising four vertical posts arranged in square each other, four continuous beams connecting adjacent posts each other, eight rigid supporting members connected at one end to the post and at the other end to the continuous beams to hang-support the continuous beams and horizontal roof constituent member located nearby the continuous beams and supported mainly by the continuous beams.
Claims available in
Description (OCR text may contain errors)
ited- States Patent 1 Shirota et a1.
[ Get. 30, 1973 ROOF SUPPORTING CONSTRUCTION  Inventors: Gorou Shirota, Takarazuka; Iliroshi Imanishi, Osaka; Naoya Shibatsuji, Kobe; llsamu Nakayama, Nishinomiya; Masatoshi Ueda, Ibaraki, all of Japan [73} Assignee: Kabushiki Kaisha Takenaka Komuten, Osaka-shi, Japan  Filed: Sept. ,8, 1972  Appl. No.: 287,356
30 Foreign Application Priority Data Sept. 13, 1971 Japan 46/8310  US. Cl. 52/73, 52/648  E041) 7/14, E04b 1/342  Field of Search 52/73, 83, 82, 648, 52/650  References Cited UNITED STATES PATENTS 2,433,677 12/1947 I Thomas 52/82 2,574,307 11/1951 Whelan 52/83 3,420,011 1/1969 Takahashi... 52/83 3,443,348 5/1969 Papayoti 52/648 FOREIGN PATENTS OR APPLICATIONS 593,200 10/1947 Great Britain 52/82 Primary Examiner-John E. Murtagh Att0rneyEdwin E. Greigg 57 ABSTRACT 9 Claims, 3 Drawing Figures ROOF SUPPORTING CONSTRUCTION BACKGROUND OF THE INVENTION This invention relates to a roof supporting construction suitable to buildings which necessitate long dis-. tance between each post and also flat roof face having superior resistibility against wind pressure in such buildings as, for example, exhibition halls, markets, warehouses, factories, etc.
As to roof supporting construction of buildings which necessitate long distance between each post and also flat roof face as mentioned above, the following two Kinds of means have been adopted hitherto, namely,
1. Roof supporting construction in which multiple Numbers of wire are suspended from an apex of erected vertical posts, and roof constituent members are hand-supported utilizing these wires.
2.-Roof supporting construction in which horizontal flying buttress is attached to erected vertical post, and the flying buttress is hang-supported by rigid supporting member which connects apex of vertical post and flying buttress, and roof constituent member is supported by this flying buttress.
By means (I), there is such defect that structual rupture of collapse is apt to occur in relation to deformation of roof because of weak resistance against floating by wind, etc. Further, in order to prevent this floating, it is necessary to increase weight of roof constituent member itself, but such means is quite unreasonable from such standpoint that the original object of this means resided in light-weight roof construction.
By means (2), above-mentioned defect, i.e. floating problem has been resolved, but this means is still unsatisfactory in standpoint of light-weight roof construction which was the original object. Namely, in this means, posts areerected individually each other and connection of posts is made by using simple beam, which connects flying buttress of each post, therefore, large strength against horizontal load is required for post and also large strength against vertical load is required for simple beam, and such requirements for strength made it difficult to attain light-weight roof construction. Further, in both cases of l) and (2), each post must be erected so as to resist horizontal load by itself, therefore, its foundation structure must be strong enough, and this matter has been another economic or execution problem on actual works.
SUMMARY OF THE INVENTION This invention provides a roof supporting construction which is satisfactory in not only strength butalso in economic by improving above-mentioned defect in customary construction.
The roof supporting construction according to this invention consists at least one unit-comprising of four substantially vertical posts arranged nearly in square state each other, and four substantially horizontal continuous beams connecting adjacent two posts each other among said posts and being located at nearly identical level below apex of said post, and eight rigid supporting members connected at one end with'said post at level of above said continuous beam and at the other end with said continuous beam, each of said posts being connected with two supporting members among said supporting members, while each of said continuous beams being hang-supported by two said supporting members connected with post located at both ends of this continuous beam, and substantially horizontal roof constituent member located nearby level of said continuous beam and supported mainly by said continuous beam.
Namely, the gravity and floating due to wind pressure, etc. of roof constituent member can be lessened substantially by triangular truss formed by said post, continuous beam and supporting member, therefore, roof supporting can be performed surely as desired even by light and simple form continuous beam, thereby drastic curtailment in material quantity required for constituent member, especially for continuous beam is obtainable.
Further, horizontal load from every direction due to wind, etc. also can be lessened substantially by combination of Rahmen construction consisting of two posts and one continuous beam and being arranged on four faces, with said triangular truss, thereby sufficient strength against horizontal load can be held even by light-weight posts and simple post-foundations.
Further, even when connection of said post, continuous beam and supporting member are performed with pin-joint, said Rahmen construction and triangular truss can be formed, and improvement in operational property and shortening of completion period of building can be attained eliminating such work as welding which requires time and skill, without causing any inferiority in strength.
Further, this means capacitates to perform roof supporting by at least three kinds of member of post, continuous beam and supporting member, thereby bringing reduction in cost by standardization of material,
and also this means capacitates to gain any floor space by standardized multiple numbers of unit to be combined suitably, thereby designing labor can be also saved.
Briefly speaking, present inventors have accomplished extremely superior roof supporting construction which is satisfactory in every point of speed-up, cost-down and excellent adaptability to change of demand.
An object of this invention is to provide a roof supporting construction which is capable of curtailing remarkably required quantity of material compared with customary roof supporting construction in spite of long distance between posts and the strong resistance against load to be applied to roof from every direction.
The other object of this invention is to provide a roof supporting construction which has superior operational property and is capable of drastic shortening of completion period of buildings.
Further object of this invention is to provide a roof supporting construction which is capable of attaining drastic reduction in cost not only in material but also in designing or construction, thus having extremely great economical effect.
Still further object of this invention is to provide a roof supporting construction in which standardization of material can be made, and, moreover change of floor space can be performed easily.
Other objects and the benefits will become clear in the following description.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is partially cut off top planview. FIG. 2 is a longitudinal section along line IIII in FIG. 1, and
FIG. 3 is partially cut off perspective view showingthe framework construction.
DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 and FIG. 2 show a roof supporting construciton comprising unit 1 having a auxiliary roof part 2. As to number of said unit 1, change of design can be made freely so that any floor space can be decided. Further, the use of auxiliary roof part 2 is optional.
Said unit 1 comprises four posts 3, four continuous beams 4, eight rigid supporting member and roof contituent member 6 as shown more clearly in FIG. 3. But, the post 3 and the continuous beam 4 located between adjacent units 1 are common to both units 1. Further, said continuous beam 4 may be more than four, and said supporting member 5 may be more than eight.
Each of said posts 3 is erected substantially vertically by foundation structure 7, and arranged at each corner of nearly square form i. e. square or rectangle. The post 3 is preferable to be made of e. g. one piece of steel pipe, but it may be constructed by rigid combination of e. g. multiple numbers of member. Each of said continous beams 4 is connected with the adjacent two posts among said posts 3 by pin-joints 8 at its both ends, and the every continuous beams 4 are attached at nearly identical level below apex of said post 3 in horizontal posture. The continuous beam 4 is preferable to be made of e. g. one piece of H-shaped steel, but is may be constructed by rigid combination of e. g. multiple numbers of member. Each of said supporting member 5 is jointed to apex part of said post 3 by pin-joint 9 at its one end and jointed to said continuous beam 4 by pin-joint 10 at the other end. Each of said post 3 is hang-supported by said two supporting member 5, while each of said continuous beam 4 is supported by thetwo supporting member 5 which are connected with the post 3 at its both ends. Namely, in spite of the fact that said post 3, continuous beam 4 and supporting member 5 are connected each other by pin-joint 8, 9, 10 which is simple in execution of works, a Rahmen construction is formed by two posts 3 and one continuous beam 4, and at the same time, a triangular truss is formed by the post 3, the continuous beam 4 and the supporting member 5, thereby strong resistance to load applied to the roof supporting construction from every direction can be made, and also weight of the post 3, the continuous beam 4 and the supporting member 5 can be made light considering its strength, and also the foundation structure 7 of the post 3 can be simplified. Further, connecting position between said continuous beam 4 and supporting member 5 lies on a point at which the continuous beam 4 is divided into three nearly equidistance parts, thereby reasonable design for stress distribution of the continuous beam 4 can be made, thus making the continuous beam 4 lighter. Furwind load as small as possible. Further, when the roof constituent member 6 is positioned below the continuther, as to the supporting member 5, it is advantageous ous beam 4, a fine ceiling face can be formed in lower space by the roof constituent member 6 itself, and necessary opening to the roof constituent member 6 is limited only to a opening to pass through the post 3, thereby it has such advantage that execution of work is simplified. While, when the roof constituent member 6 is positioned above the continuous beam 4, special works to support the roof constituent member 6 become unnecessary in the case of attachment of this member 6, thus there is such advantage that execution of works is simplified. As to the roof constituent member 6, plate member consiting of e.g. steel folding plate and glass wool plate which is attached to the lower side of the above steel folding plate, but various other plate members also may be utilized. The roof constituent member 6 is provided with lighting windows 11.
In FIG. 2, 13 is side wall made of steel folding plate for lower space of the roof constituent member 6, and it extends from a floor face 14 to the roof constituent member 6. Further, 15 is a horizontal gutter and 16 is a vertical gutter, and rain water to the roof face is drained through these gutters l5 and 16.
Each of the posts 3 located outside is provided with one or two flying buttress 17, and this flying buttress 17 is positioned nearly on extension of said continuous beam 4. Each of said flying buttress 17 is hangsupported by another rigid supporting member 19 which is jointed to apex part of said post 3 at its one end, and to the flying buttress 17 at the other end by pin-joint 18 respectively. And, said roof constituent member 6 is extended up to the equidistance position to said flying buttress 17.
As shown in FIGS. 1 and 3, said unit 1 comprises further two pieces of first reinforcing beams 20, six pieces of second reinforcing beams 21 and four another rigid supporting members 22, and said first reinforcing beam 20 and second reinforcing beam 21 are positioned at nearly same level as said continuous beam 4. Said first reinforcing beam 20 is connected with each of said continuous beam 4 located parallel each other by pinjoint 23 on apoint at which over-all length or the continuous beam 4 being divided into three nearly equidistance parts. Said second reinforcing beam 21 is attached perpendicularly to said first reinforcing beam 20, and connection of said continuous beam 4 and first reinforcing beam 20, or connection of each of said first reinforcing beams 20 is performed through pin-joint 24. Said another supporting member 22 is connected at one end with either the first reinforcing beam 20 or the second reinforcing beam 21 nearby connection point of the first reinforcing beam and the second reinforcing beam 21, and at the other end with apex part of said post 3 nearby connection point of each of said reinforcing beams 20 and 21 by pin-joint 25 respectively.
Further, 26 are third reinforcing beams which connect each free end of said flying buttress l7, and 27 are fourth reinforcing beams which connect said continuous beam 4 and third reinforcing beam 26 through pinjoint 28, and 29 are another rigid supporting members which are connected at one end with connection point of third reinforcing beam 26 and fourth reinforcing beam 27 and at the other end with upper part of said post 3 through pin-joint 30 respectively. The fourth reinforcing beam 27 is arranged on nearly same straight line as extension of said second reinforcing beam 21.
Further, various connectionpoints of said supporting members, 5, 19, 22 and 29 and said post 3 are prefera bly to be put in unity on apex part of post 3 from the benefit of construction or sense of beauty, but such connection condition is not necessarily required, and as the main matter, it is sufficient to perform such connection at upper part above level of said continuous beam 4.
What we claim is:
1;. A roof supporting construction consisting of at least one unit, said unit comprising four substantially vertical posts arranged in nearly square state each other, and four substantially horizontal continuous beams which connect adjacent two posts each other among said posts-and are located at nearly identical level belowthe apex of said post, and eight rigid supporting members connected at one end with said post at level higher than said continuous beam and at the other end with said continuous beam, each of said post being connected with two supporting members among said supporting members, while each of said continuous beam being hang-supported by two said supporting members connected with post which is located at both ends of said continuous beam, and substantially horizontal roof face constituent member located nearly level of said continuous beam and supported mainly by said continuous beam.
2. A roof supporting construction according to claim 1, wherein connection of said post and said supporting member, and of said continuous beam and said supporting member are performed by pin-joint respectively.
3. A roof supporting construction according to claim 2, wherein connection of said post and continuous beam is performed by pin-joint.
.4. A roof supporting construction according to claim 1, further comprising side walls facing to space below said roof constituent member.
5. A roof supporting construction according to claim 1, further comprising flying buttress connected with said post at one end and also located nearly on extension of said continuous beam, said flying buttress being hang-supported by at least another rigid supporting member connected with said post at one end at level higher than said flying buttress and connected with this flying buttress at the other end, said roof constituent member being extended up to the equidistance location to said flying buttress. 6. A roof supporting construction according to claim 1, further comprising two pieces of first reinforcing beam connected at each end with each of said continuous beam arranged parallel each other, and six pieces of second reinforcing beams arranged perpendicularly to said first reinforcing beam to perform connection of said continuous beam and first reinforcing beam, and connection of each of first reinforcing beams, these reinforcing second beams being arranged in two rows parallel each other.
7. A roof supporting construction according to claim 6, further comprising four pieces of another rigid supporting members connected at one end with both of said first reinforcing beam and second reinforcing beam nearby connection point between those reinforcing beams, and at the other end with said post located nearest to the connection point between each of said reinforcing beams at level above those reinforcing beams respectively.
8. A roof supporting construction according to claim 6, wherein connection point of said continuous beam and supporting member is located where over-all length of continuous beam is divided into three nearly equidistance parts, and connection point between said first reinforcing beam and said continuous beam being located where the continuous beam is divided into three nearly equidistance parts, and each row of said second reinforcing beams pass through a point at which over-all length of said continuous beam and first reinforcing beam respectively is divided into three equidistance parts.
9. A roof supporting construction according to claim 1, wherein multiple numbers of said unit are arranged in unity, and said post and continuous beam composing each unit being arranged in common with those multiple numbers of said units.