JP6207470B2 - Manufacturing method and construction method of post-strike integrated bridge extension device - Google Patents
Manufacturing method and construction method of post-strike integrated bridge extension device Download PDFInfo
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- JP6207470B2 JP6207470B2 JP2014133292A JP2014133292A JP6207470B2 JP 6207470 B2 JP6207470 B2 JP 6207470B2 JP 2014133292 A JP2014133292 A JP 2014133292A JP 2014133292 A JP2014133292 A JP 2014133292A JP 6207470 B2 JP6207470 B2 JP 6207470B2
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Description
本発明は、橋梁用伸縮装置に関するものである。 The present invention relates to a bridge telescopic device.
橋梁用伸縮装置とは、ゴムや弾性シール材などの弾性体と鋼材を組み合わせたもの、又はその其々による構造の伸縮装置を工場製作し、施工現場で橋梁に埋設されたアンカーボルトとで伸縮装置を溶接固定し、後打ち材としてコンクリートを打設することによって橋梁本体１と伸縮装置の一体化をはかっていた。 The expansion and contraction device for bridges is a combination of elastic materials such as rubber and elastic seal materials and steel materials, or an expansion device with a structure made of each of them, and is expanded and contracted with anchor bolts embedded in the bridge at the construction site. The bridge body 1 and the telescopic device were integrated by fixing the device by welding and placing concrete as a post-casting material.
コンクリートの打設・養生には、施工規模に応じた人員と日数を必要とし、天候や気温によって作業内容や時間も変わるため管理に習熟したものが必要となる。伸縮装置を先付けする場合には、型枠装置の設置やコンクリート打設・養生後の脱型作業もあり、現場での管理項目は多岐にわたっていた。 Concrete placement and curing requires personnel and the number of days according to the construction scale, and the work content and time change depending on the weather and temperature, so those who are familiar with management are required. In the case of attaching an expansion / contraction device in advance, there were also installation work of a formwork device and demolding work after concrete placement / curing, and the management items at the site were diverse.
近年では、橋梁本体の長寿命化という観点から、伸縮装置部のみの取換え・補修工事などが多くなっているが、一度設置した伸縮装置を取換えるには、あらかじめ交通を一部又は全面規制し、コンクリートを削岩機などではつり取壊すとともに既設の伸縮装置を取り外した後、新しい伸縮装置を再度設置し、後打ちコンクリートを打設・養生し、交通解放しているのが現状である。 In recent years, from the viewpoint of extending the life of the bridge body, replacement / repair work of only the expansion / contraction device has been increasing, but in order to replace the expansion device once installed, traffic is partially or fully regulated in advance. However, after breaking concrete with a rock drill and removing the existing expansion and contraction device, the new expansion device is installed again, post-cast concrete is placed and cured, and traffic is released. .
しかしながら、従来の橋梁用伸縮装置では、伸縮装置本体は工場製作するため、ある一定の品質が保証されるものの、施工現場でのコンクリート打設には時間と作業員の熟練度を必要とし、出来型に差異が生じることも少なくなく、コンクリートの施工不良や伸縮装置の破損につながるなどの問題がある。 However, in the conventional expansion and contraction device for bridges, since the expansion device itself is manufactured at the factory, a certain level of quality is guaranteed. However, concrete placement at the construction site requires time and skill of workers. There are often differences in the mold, and there are problems such as poor concrete construction and damage to the expansion and contraction device.
また、伸縮装置の取替え工事においては、交通を長時間規制することにより、交通障害をきたしたり、コンクリートをはつる際には、大きな騒音や粉塵などが発生するため周辺環境への影響も考慮する必要があるうえ、新しい伸縮装置を再度設置するためには、伸縮装置の新設時と同様の作業を再度施工現場で行う必要がある。 Also, in the expansion and contraction device replacement work, traffic interference will be caused by restricting traffic for a long period of time, and when handling concrete, large noise and dust will be generated, so consider the impact on the surrounding environment. In addition, in order to install a new telescopic device again, it is necessary to perform the same work as that at the time of newly installing the telescopic device again at the construction site.
本発明では、以上のような背景技術の問題点に鑑み、施工現場でのコンクリート打設・養生を必要とせず、作業員の熟練度に左右されない製品を提供することを目的としている。 In view of the problems of the background art as described above, an object of the present invention is to provide a product that does not require concrete placement and curing at a construction site and does not depend on the skill level of an operator.
上述した課題を解決するために、本発明の後打ち材一体型の橋梁用伸縮装置は、橋梁本体１の変位を吸収する伸縮部４と、橋梁本体１と伸縮部４とを一体化させることが主目的のコンクリート部２とを備えている。 In order to solve the above-described problem, the post-strike integrated bridge extension device of the present invention integrates the extension / contraction part 4 that absorbs the displacement of the bridge body 1, and the bridge body 1 and the extension / contraction part 4. Is provided with a main purpose concrete part 2.
本発明は、伸縮部４とコンクリート部２とが工場製作により一体化されていることが特徴である。 The present invention is characterized in that the stretchable part 4 and the concrete part 2 are integrated by factory manufacture.
コンクリート部２には、製品につき橋軸直角方向に少なくとも左右１組のアンカー孔３の加工が施されており、橋梁に埋設されたアンカーボルト７をこのアンカー孔３に通しナット６で固定することによって、本発明品と橋梁本体１とは一体化されている。 The concrete portion 2 has at least one pair of left and right anchor holes 3 processed in the direction perpendicular to the bridge axis per product, and anchor bolts 7 embedded in the bridge are passed through the anchor holes 3 and fixed with nuts 6. Thus, the product of the present invention and the bridge body 1 are integrated.
本発明品の伸縮部４は、ゴムなどの弾性体や本体が鋼材からなる鋼製構造のものや、ゴムなどの弾性体に荷重支持鋼板９のような鋼材を組み合わせた構造のものからなっている。 The stretchable part 4 of the present invention consists of an elastic body such as rubber, a steel structure whose main body is made of steel, or a structure in which a steel material such as a load supporting
本発明の設置面となる橋梁箱抜き部８は、あらかじめ均しモルタルや、箱抜き型枠を用いて平坦性が確保された状態になっており、製品の設置を容易に行うことができる。 The bridge box opening portion 8 serving as the installation surface of the present invention is in a state in which flatness is ensured in advance using a leveling mortar or a box forming mold, so that the product can be easily installed.
本発明のコンクリート部２は、鉄筋により補強されているため、車輛による繰り返し荷重にも耐えうる構造となっている。 Since the concrete part 2 of the present invention is reinforced by reinforcing bars, it has a structure that can withstand repeated loads caused by vehicles.
以上の説明から、本発明にあっては次に列挙する効果が得られる。
（１） 本発明は、伸縮部４と後打ち材であるコンクリート部２が工場製作により一体化されているので、施工現場でのコンクリート打設・養生に要する日数や手間を短縮・省略するとができる。
（２） （１）により、製作者・作業者の熟練度に左右されることなく、工場管理され均一化された製品を提供することができる。
（３） 本発明は、アンカー孔にアンカーボルトを通すことで設置しているため、ナットを取り外すことによって、用意に取替えが可能である。
（４） （３）により、伸縮装置の取替え工事の際に発生する、コンクリートの取壊しなどは必要ないため、騒音や粉塵の心配もなくなる。また、コンクリートを再度打設・養生をする必要もなくなるため、施工時間の短縮を図ることが可能となり、工費節減にも役立つ。From the above description, the effects listed below can be obtained in the present invention.
(1) In the present invention, the expansion / contraction part 4 and the concrete part 2 which is a post-casting material are integrated by factory production, so the number of days and labor required for concrete placement and curing at the construction site may be shortened or omitted. it can.
(2) According to (1), it is possible to provide a factory-managed and uniform product regardless of the skill level of the producer / worker.
(3) Since the present invention is installed by passing the anchor bolt through the anchor hole, it can be easily replaced by removing the nut.
(4) According to (3), there is no need for demolishing concrete that occurs when the expansion device is replaced, so there is no need to worry about noise and dust. In addition, since it is not necessary to place and cure concrete again, it is possible to shorten the construction time, which helps to reduce the construction cost.
以下に、一つの実施の形態について、図１〜図３を参照して説明する。本発明は、橋梁の変位を吸収する伸縮部４とこの伸縮部を橋梁に固定するためのコンクリート部からなっている。コンクリート部２は伸縮部４と一体化されており、図１に示すように、伸縮部４の左右に橋梁の橋軸直角方向にわたって設置されている。 Hereinafter, an embodiment will be described with reference to FIGS. The present invention is composed of a stretchable portion 4 that absorbs the displacement of the bridge and a concrete portion for fixing the stretchable portion to the bridge. As shown in FIG. 1, the concrete portion 2 is integrated with the stretchable portion 4, and is installed on the left and right sides of the stretchable portion 4 over the direction perpendicular to the bridge axis of the bridge.
図１に示すように、本発明のコンクリート部２には、橋軸直角方向に少なくとも左右１組のアンカー孔３の加工がされている。橋梁本体に埋設されたアンカーボルト７をこのアンカー孔に通し、ナット固定することにより、橋梁と一体化されている。アンカー孔３は、図３に示すように、アンカーボルト７を通す貫通孔部１０とナット固定するための座ぐり孔部１１とからなっている。これにより、車輛の通行面にナットを飛び出させることなく、コンクリート部２にナットを内蔵させることができる。アンカーボルト７をナット６で固定した後は、アンカー孔３をモルタルやキャップにより埋めることで、通行面の平坦性は確保される。 As shown in FIG. 1, the concrete portion 2 of the present invention has at least one pair of left and right anchor holes 3 processed in a direction perpendicular to the bridge axis. The anchor bolt 7 embedded in the bridge body is passed through the anchor hole and fixed with a nut, thereby being integrated with the bridge. As shown in FIG. 3, the anchor hole 3 includes a through hole portion 10 through which the anchor bolt 7 is passed and a counterbore portion 11 for fixing the nut. Thereby, a nut can be built in the concrete part 2 without protruding a nut on the traffic surface of a vehicle. After fixing the anchor bolt 7 with the nut 6, the flatness of the passage surface is ensured by filling the anchor hole 3 with mortar or a cap.
１ａ，１ｂ 橋梁本体
２ａ，２ｂ コンクリート部
３ａ，３ｂ アンカー孔
４ 伸縮部
５ 遊間
６ａ，６ｂ ナット
７ａ，７ｂ アンカーボルト
８ａ，８ｂ 橋梁箱抜き部
９ａ，９ｂ 荷重支持板
１０ａ，１０ｂ 貫通孔部
１１ａ，１１ｂ 座ぐり孔部1a,
Claims (3)
前記一対の橋梁本体の変位を吸収するために前記一対のコンクリート部の遊間に配されて前記一対のコンクリート部を連結する弾性体部分と、前記一対のコンクリート部のそれぞれにおける、前記弾性体部分の下側となる箇所に配される一対の荷重支持板とで構成された伸縮部とを、An elastic body part arranged between the pair of concrete parts to absorb the displacement of the pair of bridge main bodies and connecting the pair of concrete parts; and the elastic body part in each of the pair of concrete parts An expansion / contraction part composed of a pair of load support plates arranged in the lower part,
工場製作により一体化することを特徴とする後打ち材一体型の橋梁用伸縮装置の製造方法。A method for manufacturing a bridge expansion and contraction device integrated with a post-casting material, which is integrated by factory production.
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| CN110055887A (en) * | 2019-05-28 | 2019-07-26 | 天津力诚科技服务有限公司 | A kind of dust-proof slide plate telescopic device of bridge durability |
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| JPS5134755Y2 (en) * | 1972-04-12 | 1976-08-27 | ||
| JPS5481635A (en) * | 1977-12-12 | 1979-06-29 | Kensuke Asakura | Structure of foundation of bridge connecting portion |
| US6898910B2 (en) * | 2003-02-04 | 2005-05-31 | Frank Bellino, Jr. | Precast composite header joint system and a method for forming and installing the same |
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| CN110055887A (en) * | 2019-05-28 | 2019-07-26 | 天津力诚科技服务有限公司 | A kind of dust-proof slide plate telescopic device of bridge durability |
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