JPH0629487B2 - Cable-stayed bridge - Google Patents
Cable-stayed bridgeInfo
- Publication number
- JPH0629487B2 JPH0629487B2 JP63277669A JP27766988A JPH0629487B2 JP H0629487 B2 JPH0629487 B2 JP H0629487B2 JP 63277669 A JP63277669 A JP 63277669A JP 27766988 A JP27766988 A JP 27766988A JP H0629487 B2 JPH0629487 B2 JP H0629487B2
- Authority
- JP
- Japan
- Prior art keywords
- tower
- cable
- diagonal member
- stayed bridge
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は斜張橋に関するもので、コンクリート造の主
塔の頂部から放射状に斜材を張出す斜張橋に関するもの
である。Description: TECHNICAL FIELD The present invention relates to a cable-stayed bridge, and more particularly to a cable-stayed bridge in which diagonal members are radially extended from the top of a concrete main tower.
〔従来技術〕 従来斜張橋としては、主塔コンクリート造、主桁を鋼製
或いはコンクリートと鋼とによって建造するのが最も安
価な施工となっている。[Prior Art] Conventionally, for a cable-stayed bridge, it is the cheapest construction to construct a main tower concrete and construct a main girder from steel or concrete and steel.
このようなコンクリート造とした斜張橋にあっては、第
７図に示すような定着方法が採用されている。すなわち
斜材ｂを主塔ａの中に貫通させ、主塔ａの反対側で斜材
ｂを定着するものである。In such a concrete cable-stayed bridge, the fixing method as shown in Fig. 7 is adopted. That is, the diagonal member b is penetrated into the main tower a, and the diagonal member b is fixed on the opposite side of the main tower a.
上記のような斜材の定着方法であると、斜材を第５図に
示すようなファン型、或いは第６図に示すようなハープ
型となるよう配設しなければならない。In the method of fixing a diagonal member as described above, the diagonal member must be arranged so as to have a fan type as shown in FIG. 5 or a harp type as shown in FIG.
しかし斜材は主桁との交差角度が大きければ大きい程吊
り上げ効果が大きく、斜材は少なくて済む。従って第４
図に示すような、斜材を主塔頂部より配す放射型の方が
好ましく、経済的にも安価に施工できることになる。However, the greater the crossing angle of the diagonal member with the main girder, the greater the lifting effect, and the less the diagonal member. Therefore, the fourth
As shown in the figure, it is preferable to use the radial type in which the diagonal members are arranged from the top of the main tower, and the construction can be economically performed at low cost.
この発明は以上のような課題を解決するためになされた
もので、主桁を良好に吊下げることができるとともに、
経済的にも安価に施工できる斜張橋を提供することを目
的とする。This invention has been made to solve the above problems, and can hang the main girder satisfactorily,
The purpose is to provide a cable-stayed bridge that can be constructed economically and inexpensively.
この発明にかかる斜張橋はコンクリート造の主塔から斜
材を放射状に張出すものである。The cable-stayed bridge according to the present invention is one in which diagonal members are radially extended from a concrete main tower.
すなわち、コンクリート造の主塔の頂部に断面欠円状の
鋼製底板からなるタワーヘッドを取付け、このタワーヘ
ッドにその底板に沿って適宜間隔をおいて半径方向に複
数本の斜材挿通孔を底板に穿設し、この挿通孔に斜材を
挿通固定し、このタワーヘッドから斜材を張出すもので
ある。That is, a tower head made of a steel bottom plate having a circular cross section is attached to the top of the main tower made of concrete, and a plurality of diagonal member insertion holes are provided in the tower head in the radial direction at appropriate intervals along the bottom plate. The bottom plate is perforated, the diagonal member is inserted and fixed in the through hole, and the diagonal member is extended from the tower head.
以下、図に示す一実施例に基づき、この発明を詳細に説
明する。The present invention will be described in detail below based on an embodiment shown in the drawings.
図において１はコンクリート造の主塔であって、この主
塔１の頂部に鋼製のタワーヘッド２が取付けられてい
る。タワーヘッド２は底板３が断面欠円状に形成されて
おり、この底板３に沿って適宜間隔をおいて半径方向に
複数本の斜材挿通孔４が底板３に穿設されている。In the figure, 1 is a main tower made of concrete, and a steel tower head 2 is attached to the top of the main tower 1. The tower head 2 has a bottom plate 3 formed in a circular cross section, and a plurality of diagonal member insertion holes 4 are formed in the bottom plate 3 in the radial direction at appropriate intervals along the bottom plate 3.
この孔４を通して斜材５がタワーヘッド２の内側に突出
されている。斜材５としてはＰＣ鋼材が採用できる。A diagonal member 5 projects inside the tower head 2 through the hole 4. PC steel can be used for the diagonal member 5.
なお、３′は補強材である。In addition, 3'is a reinforcing material.
斜材５の端部はタワーヘッド２内にて定着されている。
定着にはナット６等が使用できる。The end of the diagonal member 5 is fixed in the tower head 2.
A nut 6 or the like can be used for fixing.
斜材５の他端部は主桁７に定着され、斜材５によって主
桁７を吊上げることになる。斜材５は主塔１頂部から放
射状に張出され、主桁７に対する取付角度が大きくなっ
て吊り上げ効果が大きくなる。The other end of the diagonal member 5 is fixed to the main girder 7, and the main girder 7 is suspended by the diagonal member 5. The diagonal members 5 are radially bulged from the top of the main tower 1 to increase the mounting angle with respect to the main girder 7 and increase the lifting effect.
この発明は以上のようにコンクリートの主塔の頂部に断
面欠円状の鋼製底部からなるタワーヘッドを有するか
ら、以下のような効果を得ることができる。As described above, since the present invention has the tower head including the steel bottom having a circular cross section at the top of the main tower of concrete, the following effects can be obtained.
イ 主塔はコンクリート造であり、施工費が安価にな
る。(A) The main tower is made of concrete, which reduces the construction cost.
ロ 主塔の頂部から斜材を張り出して主桁との取付角度
を大きくしたため、主桁の吊り上げ効果が大きくなり、
斜材の量が少なく施工費が安価となる。(2) Since the diagonal members are extended from the top of the main tower to increase the mounting angle with the main girder, the effect of hoisting the main girder is increased,
The amount of diagonal material is small and construction costs are low.
第１図は斜張橋の側面図、第２図はタワーヘッドの平面
図、第３図は第２図のＡ−Ａ線断面図、第４図〜第６図
は斜張橋の側面図、第７図は従来の斜張橋の主塔断面図
である。 １……主塔、２……タワーヘッド、３……底板、４……
斜材挿通孔、５……斜材、６……ナット、７……主桁。1 is a side view of a cable-stayed bridge, FIG. 2 is a plan view of a tower head, FIG. 3 is a sectional view taken along the line AA of FIG. 2, and FIGS. 4 to 6 are side views of a cable-stayed bridge. FIG. 7 is a sectional view of the main tower of a conventional cable-stayed bridge. 1 ... Main tower, 2 ... Tower head, 3 ... Bottom plate, 4 ...
Diagonal member insertion hole, 5 ... diagonal member, 6 ... nut, 7 ... main girder.
Claims (1)
げる斜張橋において、 コンクリート造の主塔の頂部に断面欠円状の鋼製底板か
らなるタワーヘッドを取付け、 このタワーヘッドにその底板に沿って適宜間隔をおいて
半径方向に複数本の斜材挿通孔を底板に穿設し、この挿
通孔に斜材を挿通固定し、このタワーヘッドから斜材を
張出したことを特徴とする斜張橋。1. In a cable-stayed bridge in which a main girder is suspended by a material overhanging from a main tower, a tower head made of a steel bottom plate having a circular cross section is attached to the top of the concrete main tower, and the tower head is attached to the tower head. A plurality of diagonal member insertion holes are formed in the bottom plate in the radial direction at appropriate intervals along the bottom plate, the diagonal member is inserted and fixed in the through holes, and the diagonal member is projected from the tower head. Cable-stayed bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63277669A JPH0629487B2 (en) | 1988-11-02 | 1988-11-02 | Cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63277669A JPH0629487B2 (en) | 1988-11-02 | 1988-11-02 | Cable-stayed bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02125006A JPH02125006A (en) | 1990-05-14 |
| JPH0629487B2 true JPH0629487B2 (en) | 1994-04-20 |
Family
ID=17586650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63277669A Expired - Lifetime JPH0629487B2 (en) | 1988-11-02 | 1988-11-02 | Cable-stayed bridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0629487B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030012013A (en) * | 2001-07-30 | 2003-02-12 | 이형훈 | apparatus to distribute bridge load and the method using the same |
| JP6346847B2 (en) * | 2014-11-11 | 2018-06-20 | 三井住友建設株式会社 | Anchor cable fixing structure |
-
1988
- 1988-11-02 JP JP63277669A patent/JPH0629487B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02125006A (en) | 1990-05-14 |
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