JP3803237B2 - Steel structure component manufacturing system and temporary assembly simulation apparatus for the system - Google Patents

Description

この計算で求めたキャンバー調整量を当てはめると、主桁モデル全体のキャンバー誤差は、図３に実線で示す如き上げ越し状態となる。なお、かかるキャンバー調整は、上述したように、互いに並行する全ての主桁モデルについて行う。
【００２５】
次に、各主桁モデルの全長の調整量の決定方法について説明する。全長は、上記各ジョイントを構成する現場継手部の両側の主桁モデル端部のボルト穴群（通常、縦横に整列した多数のボルト穴からなる）の間の距離によって調整する。調整前のシミュレーションでは、このボルト穴群間距離には、設計寸法の値が自動的に入力され、これにより主部材モデルが、例えば図４に示す如く配置され、主桁モデルは、その図４に示す如き仮組立形状となる。この仮組立において、理想的なシミュレーション形状とは、各主桁モデルの全長が規定値内に収まり、かつ上記現場継手部の隙間も規定値を満たし、さらに複数本の主桁モデル間で端部の出入りが揃っている（設計位置よりも出ているかまたは引っ込んでいる）形状である。なお、図４は、３本の主桁モデルを構成するようにそれぞれ配置された９本の主部材モデルを側面図にて例示している。
【００２６】
従って、かかる理想的なシミュレーション形状を得るため、ここでは各主桁モデルの全長の調整可能な範囲Ｐmin[k]〜Ｐmax[k]（ｋは主桁モデルの本数に対応し、図４の例ではｋ＝１〜３）を、以下の式（２）のようにして算出する。ここに、ｋ＝１〜ｎco（但し、ｎcoは主桁モデルの連数すなわち並列数）、ｊ＝１〜ｎ[k] （但し、ｎ[k] は各主桁モデルのジョイント数）であり、また、Δmin ，Δmax は隙間の許容最小、最大値（通常は、Δmin ＝０，Δmax ＝５ｍｍ）、δmin[k, j] ，δmax[k, j] は調整前のシミュレーション結果での各現場継手部の隙間の最小、最大値、Ｌｋは調整前のシミュレーション結果での主桁モデルの全長、Ｌ0kは主桁モデルの全長の規定値である。
【数２】

【００２７】
上記のようにして求めた各主桁モデルの調整範囲を基に、今度は、図５に示すように、並行した複数本の主桁全体が共通して調整できる範囲である共通調整範囲を、以下の式（３）のようにして算出する。ここに、ｎcoは上記と同様主桁モデルの並列数である。
【数３】

このようにして求めた調整範囲下限Ｐmin の最大値Ｐ1 と調整範囲上限Ｐmaxの最小値Ｐ2 との間で、図５に示すようにＰ1 ≦Ｐ2 の条件が満たされれば、共通調整範囲が存在することになる。
なお、図６に示すように、Ｐ1 ＝Ｐmin[2]がＰ2 ＝Ｐmax[1]よりも大きくなって、Ｐ1 ≦Ｐ2 の条件が満たされず、共通調整範囲が存在しない場合もあり得るが、かかる場合は、大きい方の値であるＰ1 を強制的に調整点に定める。
【００２８】
このようにして共通調整範囲や調整点が定まったら、次は、主桁モデルの全長の規定値から、各主桁モデルの調整量を確定する。すなわちここでは、図７に示すように、主桁モデルの一端位置Ａ1 を定めた場合に主桁モデルの全長の規定値から定まる他端位置であるＡ2 のラインに対し共通調整範囲や調整点がどのような位置にあるかのケースに応じて、上記Ａ2 のラインから、全長の規定値からの調整点Ｐ0 までの距離ΔＬP0を決定する。
【００２９】
上述の如くして、全長の規定値からの調整点Ｐ0 が、例えば図８に示すように確定したとすると、各主桁モデルにおいて、全長を引き伸ばして調整するタイプ（図８のＧ1,Ｇ3 ）と、逆に全長を縮めて調整するタイプ（図８のＧ2 ）とが発生し得る。これらについての全長の調整量ΔＬｋは、以下の式（４）のようになる。ここに、ΔＬP0は上記Ａ2 のラインから、全長の規定値からの調整点Ｐ0 までの距離、Ｌｋは主桁モデルの全長のシミュレーション値、Ｌ0kは主桁モデルの全長の規定値、ｋ＝１〜ｎco（但し、ｎcoは主桁モデルの並列数）である。
【数４】
ΔＬｋ＝ΔＬP0−（Ｌｋ−Ｌ0k）・・・（４）
【００３０】
このΔＬｋの調整は、前述した各主桁モデルの各現場継手部の隙間調整の問題となる。ここで、各現場継手部の隙間の最小値を一定とすることにすると、その一定の最小値は、以下の式（５）のようになる。
【数５】

ここに、ｋ＝１〜ｎco（但し、ｎcoは主桁モデルの並列数）、ｊ＝１〜ｎ[k]（但し、ｎ[k] は各主桁モデルのジョイント数）であり、δmin[k, j] は調整前のシミュレーション結果での各現場継手部の隙間の最小値、Δconst[k]は上記一定の最小値である。
従って、各ジョイントにおける隙間の調整量Δｘ[k, j]は、以下の式（６）のようになる。これを各現場継手部のボルト穴群間距離の調整量として与える。
【数６】
Δｘ[k, j]＝Δconst[k]−δmin[k, j] ・・・（６）
なお、上述の方法では、図４および図８中、各主桁モデルの左端に位置する主部材モデルを所定位置に置いて、他の主部材モデルの三次元位置を求めているので、各主桁モデルの左端に位置する主部材モデルが基準主部材モデルに相当している。
【００３１】
次に、互いに並行する複数本の主桁モデルの相互の間隔の調整量の決定方法について説明する。ここでは、図９中に破線で示すように、複数本の主桁モデルを各ジョイント位置で複数ブロックに分けて（図９の例ではブロック１〜３の３ブロック）、ブロック単位で、逐次主桁モデルの相互の間隔の調整を行うものとする。
【００３２】
主桁モデルの相互の間隔を調整する前のシミュレーションの結果では、主桁以外の主部材としての横桁や対傾構等の二次部材のモデル（これも主部材モデルに含まれる）の寸法誤差は、図９に括弧なしの数値（単位はｍｍ）で示すように、その二次部材モデルを配置した場合のボルト穴同士の位置ずれとして求められる（この場合もボルト穴群同士の位置ずれとして求め得る）。一般に、ボルト外径（Ｍ２２の場合はφ２２ｍｍ）はボルト穴内径（（Ｍ２２の場合はφ２４．５ｍｍ）よりも２．５ｍｍ小さいので、二次部材の両端部のボルト穴の分を合わせて±５ｍｍ以内の寸法誤差であれば両端部のボルト穴にボルトを挿通し得るが、±５ｍｍを超えると一方のボルト穴にボルトを挿通し得なくなる。このため、上記の寸法誤差が大き過ぎる場合（通常、±５ｍｍを超える場合）は、主桁モデルの間隔を調整しなければならない。
【００３３】
ここでは上記のようにブロック単位で調整を行うため、先ず、二次部材の寸法誤差の平均値、すなわち図９中括弧内に示す数値（単位はｍｍ）を算出する。そしてそれらの平均値を鋼橋の幅方向（主桁モデルの横方向）に加算し、調整前の総合誤差の値を求める。このようにすると、図９の例では、１〜３ブロックの調整前の総合誤差の値はそれぞれ、＋６．０ｍｍ、＋６．４ｍｍ、−１．８ｍｍとなる。
【００３４】
次に、当該仮組立シミュレーション装置３のオペレータ（操作者）が、上記調整前の総合誤差値を基に、これを補正するための目標値を設定する。図示例のように３本の二次部材で４本の主桁モデルを鋼橋の幅方向に繋げる場合、各二次部材の許容値が±５ｍｍであるので、総合誤差の目標値は±１５ｍｍ以内ということになり、その範囲内で適宜設定する。図９の例では、１〜３ブロックの総合誤差の目標値をそれぞれ、＋５．０ｍｍ、＋７．５ｍｍ、０ｍｍとして、３つのブロックの誤差傾向を０〜＋側に揃えている。
【００３５】
次に、各ブロックに関する主桁モデルの相互の間隔の調整量を算出する。ここでは、図１０に３本の二次部材（横構）モデルで４本の主桁モデルを鋼橋の幅方向に繋げる場合について例示するように、間隔を調整した後の二次部材モデルの寸法誤差平均の二乗和が最小となるような目的関数を、次の式（７）のように選択する。ここに、ｎcoは主桁モデルの並列数、εi は間隔調整前の二次部材モデルの寸法誤差平均、Δｙi は主桁モデルの相互の間隔の調整量である。
【数７】

【００３６】
そして、主桁モデル間隔を調整する際、上記の総合誤差の目標値を満たすものとするため、次の条件式（８）が成り立つように調整するものとする。ここに、ＭＢは総合誤差の目標値である。
【数８】

従って、式（７）および式（８）より、以下の式（９）の無条件の目的関数Ｇが最小となるように主桁モデルの間隔を調整する問題に変換する。ここに、λはラグランジュの未定乗数である。
【数９】

【００３７】
上記の式（９）のＧの最小化は、その各変数（Δｙi ，ｉ＝１〜ｎco-1）でＧを偏微分した式をゼロと置くことによって求められた以下の連立方程式（１０）を解く問題となる。
【数１０】

【００３８】
上記式（１０）を整理すると、以下の式（１１）が得られる。
【数１１】

これを式（８）の条件式に代入すると、ラグランジュの未定乗数が、以下の式（１２）のように求まる。
【数１２】

【００３９】
従って、上記の式（１２）のλを式（１１）に代入した以下の式（１３）によって、主桁モデルの相互の間隔の調整量を自動的に算出することができる。
【数１３】

【００４０】
なお、図９中のブロック２では、以下の式（１４）によって主桁モデル間隔の各調整量が求まる。
【数１４】

【００４１】
その後は、上記の如くして求めた主桁モデル間隔の調整量を用いて、仮組立シミュレーションを再度行うが、ここではその再シミュレーションに先立ち、上記主桁モデル間隔の調整量が適切であるか否かを判断する。この判断の基準は、上記式（１３）で求めた主桁モデル間隔の調整量で二次部材モデルの各寸法誤差平均を単純に補正した結果（二次部材モデルの各寸法誤差平均の推定値）が｜５｜（±５）ｍｍ以内である場合に、適切と判断するというものである。例えば図９に示す例では、図１１に示す如き結果となるので、二次部材モデルの各寸法誤差平均の推定値（大括弧〔 〕内）は全て｜５｜ｍｍ以内である。従って、かかる場合は適切な主桁モデル間隔が与えられているとして、次の処理へ進む。その一方、二次部材モデルの何れかの寸法誤差平均の推定値が｜５｜ｍｍを超えているのであれば、総合誤差の目標値を変更して、その寸法誤差平均の推定値が｜５｜ｍｍ以内となるようにする必要がある。
【００４２】
主桁モデル間隔を調整する場合のシミュレーションでは、鋼橋モデルの仮組立シミュレーション結果（主桁モデルのキャンバー調整および全長調整を行った結果）の収束値を利用する。この収束値は、図１２に４本の主桁モデルＧ1 〜Ｇ4を鋼橋の幅方向に繋げる場合について示す如き、各主桁に対応する各主部材モデルの座標系原点Ｃj,i （ｉ＝１〜ｎco，ｎcoは主桁連数）の、仮組立大座標系での座標値（Ｘ，Ｙ，Ｚ）を含むものである。
【００４３】
主桁モデル間隔の調整は、上記の原点Ｃj,i のＹ軸方向のみの値を補正することによって行っている。従ってここでは、上述の如くして求めた主桁モデル間隔の調整量を用いて、以下の式（１５）のようにして各原点Ｃj,i のＹ軸方向の補正値を求める。ここに、ｊ＝１〜ＢＬ、ｉ＝２〜ｎcoであり、ＢＬはブロック数（１本の主桁モデル当たりの主部材モデル数）、ｎcoは主桁連数、ΔＹ[j, i]は主部材座標系原点Ｃj,i のＹ軸方向の補正値、ＡＢ[j] はブロックｊにおける二次部材寸法総合誤差の調整値（総合誤差目標値−調整前総合誤差値）、そしてΔｙ[j, i-1]はブロックｊにおける主桁モデル間隔の調整量である。
【数１５】

上記の補正値ΔＹ[j, i]を図９の例について具体的に計算すると、図１３に示す如き結果が得られる。
【００４４】
当該仮組立シミュレーション装置３はその後、上記の式（１５）によって得られた補正値ΔＹ[j, i]を上述した収束値のＹ座標値に加えて、主桁モデル間隔を調整した後の仮組立シミュレーションを行い、その結果を当該装置３のコンピュータで画面表示や印字により出力して、その仮組立した鋼橋モデルが設計上の諸条件を満たしていることをオペレータ等が確認し得るようにするとともに、以上の過程で得られた、各連結部材の寸法データや、修正の必要な主部材の修正データを出力する。
【００４５】
従ってこの実施例の鋼橋構成部材の製作システムによれば、連結部である、主部材としての主桁や横桁等を斜め方向に連結する横構と、主部材としての主桁同士を縦方向に連結したり主部材としての主桁と横桁とを連結したりする添接板とを、組み立てた鋼橋の組立誤差が許容誤差以内に納まるように製作し得て、それらの連結部材の修正や再製作を不要とすることができ、これにより鋼橋構成部材の製作の手間と費用とを削減することができる。
【００４６】
また、この実施例の鋼橋構成部材の製作システムによれば、仮組立シミュレーション装置３が、ボルト穴の寸法データを群単位で処理するので、寸法データの処理を容易なものとすることができる。なお、主部材としての主桁、横桁および対傾構等と、連結部材としての横構および添設板とのそれぞれのボルト穴の穴明けは、数値制御で行っているので、各ボルト穴群におけるボルト穴相互の位置精度は充分に高い精度とすることができる。
【００４７】
そしてこの実施例の仮組立シミュレーション装置３によれば、長手方向に整列する主部材間の隙間が規定値以下になりかつ均等になるとともに鋼橋全体として許容組立誤差内に位置するように複数の主部材を配置すると組立誤差が許容値を超える主部材について、自動的に修正データを得ることができるので、その修正データに基づき主部材を修正することで、最小限度の修正で複数の主部材を確実に鋼橋全体として許容組立誤差内に配置することができる。
【００４８】
以上、図示例に基づき説明したが、この発明は上述の例に限定されるものでなく、例えば、上記寸法計測装置２と仮組立シミュレーション装置３とが、共通のコンピュータを併用するようにしても良く、また上記主部材製作装置１と連結部材製作装置４とが、ＮＣ罫書機とＮＣ切断加工機とＮＣ穴明け加工機と溶接機との少なくとも一つを共用していても良い。
【００４９】
そしてこの発明の製作システムおよび仮組立シミュレーション装置は、上述した鋼橋のみならず、他の種類の鋼構造体の製作にも同様にして適用し得ることはいうまでもない。
【図面の簡単な説明】
【図１】 この発明の鋼構造体構成部材の製作システムの一実施例および、その製作システム用の、この発明の仮組立シミュレーション装置の一実施例を示す構成図である。
【図２】 上記実施例の仮組立シミュレーション装置が行うキャンバー調整の基本概念を示す説明図である。
【図３】 上記実施例の仮組立シミュレーション装置のキャンバー調整量の与え方を示す説明図である。
【図４】 上記実施例の仮組立シミュレーション装置による、全長調整前のシミュレーション結果を各主桁モデルについて側面図で示す説明図である。
【図５】 上記実施例の仮組立シミュレーション装置が行う共通調整範囲の抽出の方法を示す説明図である。
【図６】 上記共通調整範囲が存在しない場合を示す説明図である。
【図７】 上記実施例の仮組立シミュレーション装置が行う、全長の規定値からの調整量の確定の方法を示す説明図である。
【図８】 上記実施例の仮組立シミュレーション装置により全長の調整位置が確定された状態を各主桁モデルについて側面図で示す説明図である。
【図９】 上記実施例の仮組立シミュレーション装置による、主桁モデル間隔調整前のシミュレーション結果での、二次部材モデルの寸法誤差値を平面図で示す説明図である。
【図１０】 上記実施例の仮組立シミュレーション装置での主桁モデル間隔の調整モデルを平面図で示す説明図である。
【図１１】 上記実施例の仮組立シミュレーション装置により主桁モデル間隔を調整したとした場合の、二次部材モデルの寸法誤差平均の推定値を平面図で示す説明図である。
【図１２】 上記実施例の仮組立シミュレーション装置での仮組立大座標系と各主部材モデルの座標系との関係を平面図で示す説明図である。
【図１３】 上記実施例の仮組立シミュレーション装置が図９に示す例について求めた、主桁モデル間隔調整用データを平面図で示す説明図である。
【符号の説明】
１ 主部材製作装置
２ 寸法計測装置
３ 仮組立シミュレーション装置
３ａ 主部材モデル三次元配置部
３ｂ 組立誤差調査部
３ｃ 修正データ出力部
４ 連結部材製作装置[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a steel structure constituent member manufacturing system that automates the manufacture of a steel structure constituent member and provisional assembly inspection, and a temporary assembly simulation apparatus for the manufacturing system.
[0002]
[Background Art and Problems to be Solved by the Invention]
When manufacturing a steel bridge, which is a type of steel structure, in the conventional method, a main girder, a main girder, a horizontal girder that connects the main girder in the horizontal direction, a diagonal structure, and a connecting member are used in the factory. Steel plate components such as connecting plates for connecting main girders in the vertical direction or connecting main girders and horizontal girders and horizontal frames for connecting main girders in an oblique direction After manufacturing all of the steel bridges, they are transported to the assembly yard secured in the factory premises, etc., where the steel bridges are temporarily assembled by combining the steel bridge components and the dimensions of each part of the steel bridge. Inspect whether the steel bridge is in accordance with the design drawing, and if there is a problem, correct the steel bridge structural member, then disassemble the temporarily assembled steel bridge and install the above steel bridge structural members. He was transported to the ground and assembled a steel bridge there.
[0003]
However, in such a conventional manufacturing method, the temporary assembly process accounts for 10 to 20% of the total manufacturing process of the steel bridge, which occupies a large part of the manufacturing cost, and the progress of the temporary assembly process depends on the weather. In addition, there was a problem of the danger of working at a high place in the assembly yard and a problem of utilization efficiency of the assembly yard.
[0004]
Therefore, in recent years, the dimensions of each of the manufactured steel bridge components are measured, and a plurality of steel bridge component models created by a CAD (Computer Aided Design) system based on the dimensions are arranged according to the design drawing of the steel bridge. Then, the steel bridge model is numerically temporarily assembled in the virtual space, and a temporary assembly simulation is performed to check whether or not the assembly error obtained therefrom satisfies the predetermined assembly accuracy. Increasingly, the method of correcting steel bridge components is adopted.
[0005]
However, even if such a temporary assembly simulation is performed, it will take time to actually modify the steel bridge components from the results of the investigation, and it may not be able to be corrected, and it may be necessary to remanufacture it. There was a problem.
[0006]
[Means for solving the problems and their functions and effects]
An object of the present invention is to provide a steel structure constituent member manufacturing system and a temporary assembly simulation apparatus used in the manufacturing system that advantageously solve the above problems. The production system is A steel structure in which main members are connected by the connecting members via bolts that are inserted and fastened together with bolt holes of the main members and bolt holes of the connecting members. The numerical control based on the steel structure design data prepared in advance is used for at least cutting and drilling of the steel structure. Said A main member manufacturing apparatus for manufacturing a main member and the main member manufactured Including the location of the bolt holes Dimension measuring device for measuring dimensions, and the measured main member Main digit of To have dimensions of Main components created Based on the steel structure design data Next, a plurality of steel structures are aligned in the longitudinal direction, and the main girder model is arranged so that the distance between the bolt holes of the main member models is a design dimension. A plurality of pre-adjustment simulations arranged in parallel based on body design data are performed, and the maximum and minimum values of a plurality of gaps between the main member models of the main girder models in the pre-adjustment simulation and the steel structure From the maximum and minimum allowable gaps in the body design data, a common adjustable length range is determined for the plurality of main girder models arranged in parallel, and the total length of the plurality of main girder models is calculated. , If the common length adjustable range is obtained and if it includes the prescribed value of the total length in the steel structure design data, the common length adjustment When the active range is obtained and it overlaps the allowable range including the specified value of the overall length in the steel structure design data, the length of the end closer to the specified value of the common adjustable length range is set. The connection member is arranged so that the plurality of main member models are arranged so as to be aligned, and the plurality of main member models are connected to each other by the adjusted arrangement. A temporary assembly simulation device for obtaining the dimensional data of at least, and at least numerical control based on the obtained dimensional data Bolt holes for inserting bolts together with the bolt holes of the main member Used for drilling Manufacture the connecting member And a connecting member manufacturing apparatus.
[0007]
In such a system, the main member manufacturing apparatus is A steel structure in which main members are connected by the connecting members via bolts that are inserted and fastened together with bolt holes of the main members and bolt holes of the connecting members. The numerical control based on the steel structure design data prepared in advance is used for at least cutting and drilling of the steel structure. Said The main member is manufactured, and the dimension measuring device Including the location of the bolt holes Measure the dimensions, and the temporary assembly simulation device Main digit of To have dimensions of Main components created Based on the steel structure design data Next, a plurality of steel structures are aligned in the longitudinal direction, and the main girder model is arranged so that the distance between the bolt holes of the main member models is a design dimension. A plurality of pre-adjustment simulations arranged in parallel based on body design data are performed, and the maximum and minimum values of a plurality of gaps between the main member models of the main girder models in the pre-adjustment simulation and the steel structure From the maximum and minimum allowable gaps in the body design data, a common adjustable length range is determined for the plurality of main girder models arranged in parallel, and the total length of the plurality of main girder models is calculated. , If the common length adjustable range is obtained and if it includes the prescribed value of the total length in the steel structure design data, the common length adjustment When the active range is obtained and it overlaps the allowable range including the specified value of the overall length in the steel structure design data, the length of the end closer to the specified value of the common adjustable length range is set. The connection member is arranged so that the plurality of main member models are arranged so as to be aligned, and the plurality of main member models are connected to each other by the adjusted arrangement. And the connecting member manufacturing apparatus performs at least numerical control based on the obtained dimension data. Bolt holes for inserting bolts together with the bolt holes of the main member Used for drilling Manufacture the connecting member To do.
[0008]
Therefore, according to the manufacturing system of the steel structure constituent member of the present invention, Connect main girders as main members in the vertical direction Connect the connecting member to the assembled steel structure. Overall length of multiple main girders Within tolerance Align with each other as you enter Thus, it is possible to eliminate the need for modification and remanufacturing of the connecting members, thereby reducing the labor and cost of manufacturing the steel structure constituting member.
[0009]
In the manufacturing system of the steel structure constituent member of the present invention, the temporary assembly simulation device Arrangement adjustment of multiple main member models during simulation before adjustment of time Said Main part model Bolt hole position Group of holes As position data You can also ask for it, and if you do this, position Since data can be processed in units of groups, processing of dimension data can be facilitated. Here, since the drilling of the main member and the connecting member is performed by numerical control, the positional accuracy between the holes in each hole group can be sufficiently high.
[0010]
Further, the temporary assembly simulation apparatus of the present invention for the above-described steel structure component manufacturing system is the above-mentioned Created to have main girder dimensions A predetermined one of a plurality of main member models One The reference main member model is arranged at a predetermined three-dimensional position based on the steel structure design data. As well as , For the reference main member model Remaining Said Main part model Based on the steel structure design data, it is aligned in the longitudinal direction of the steel structure and arranged so that the distance between the bolt holes of the main member model is the design dimension, and the main girder model is obtained. Based on the steel structure design data, a pre-adjustment simulation is performed in which a plurality of steel structures are arranged in parallel A main member model three-dimensional arrangement means, an assembly error investigation means for investigating an assembly error between the plurality of main member models that have been arranged, and a mutual distance between the plurality of main member models obtained in the investigation. Correction data output means for outputting correction data of the main member corresponding to the main member model whose assembly error exceeds an allowable value based on the assembly error data.
[0011]
In such an apparatus, the main member model three-dimensional arrangement means is Created to have main girder dimensions A predetermined one of a plurality of main member models One The reference main member model is arranged at a predetermined three-dimensional position based on the steel structure design data. As well as , For the reference main member model Remaining Said Main part model Based on the steel structure design data, it is aligned in the longitudinal direction of the steel structure and arranged so that the distance between the bolt holes of the main member model is the design dimension, and the main girder model is obtained. Based on the steel structure design data An assembly error investigation means investigates an assembly error of a mutual interval between the plurality of main member models that have been arranged, and a correction data output means calculates a mutual error of the plurality of main member models obtained by the investigation. Based on the assembly error data, the main member correction data corresponding to the main member model whose assembly error exceeds the allowable value is output.
[0012]
Therefore, according to the temporary assembly simulation apparatus of the present invention, the correction data can be automatically obtained for the main members whose assembly error of the mutual interval exceeds the allowable value. Therefore, the main members are corrected based on the correction data. As a result, the plurality of main members can be reliably disposed within the allowable assembly error as the entire steel structure with the minimum correction.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Here, FIG. 1 shows a steel bridge structural member manufacturing system as an embodiment of a steel structure structural member manufacturing system of the present invention, which is used for manufacturing a steel bridge as a steel structure, and the manufacturing system thereof. FIG. 1 is a block diagram showing an embodiment of a temporary assembly simulation apparatus according to the present invention. A manufacturing system for steel bridge constituent members of this embodiment is a main girder, a horizontal girder, and a main frame for producing a tilting structure as main members. The apparatus includes a member manufacturing apparatus 1, a dimension measuring apparatus 2, a temporary assembly simulation apparatus 3 of the above-described embodiment, and a connecting member manufacturing apparatus 4 that manufactures an attachment plate and a horizontal structure as a connecting member.
[0014]
The main member manufacturing apparatus 1 in the manufacturing system of this embodiment includes a normal NC (numerical control) scoring machine, a normal NC (numerical control) cutting machine, a normal NC (numerical control) drilling machine, The NC scribing machine, NC cutting machine and NC drilling machine are operated by numerical control based on steel bridge design data prepared in advance, and the main girder, cross girder and A plate cutting process for cutting out a component plate such as an inclined structure and a drilling process for drilling a bolt hole at a predetermined position of the cut out component plate are automatically performed, and the plurality of component plates thus manufactured are further processed by the above-described welding machine. A plurality of main girders, cross girders, diagonal structures, etc. having a cross-sectional shape such as I-type or box-type are manufactured by automatically or manually welding each other.
[0015]
Further, the dimension measuring device 2 in the system of this embodiment includes a transporting carriage that travels on the straight rail by mounting the produced long member such as the main girder along the straight rail, and on the transporting cart. A stereo TV camera that is fixedly arranged on the floor on both sides of the long member, and stereo-images the entire long member and outputs a stereo image signal of the long member as the carriage moves, Other TV cameras that are fixedly placed on the floor on the side of the carriage and image the ruler attached to the side of the carriage and output the image signal of the ruler. Laser displacement measuring instrument that measures the displacement in the horizontal direction perpendicular to the longitudinal direction, the displacement in the vertical direction, and the pitching and yawing about the axis perpendicular to the longitudinal direction in a non-contact manner with a laser beam, and the traveling of the carriage An inclinometer that measures the tilt of the long member of the long member of the long member, and a normal computer that inputs and outputs signals to and from these stereo TV cameras, other TV cameras, laser displacement measuring instruments, and inclinometers Have.
[0016]
In addition, the dimension measuring device 2 in the system of this embodiment is fixedly arranged on a turntable on which a plurality of small members such as the above-described anti-tilt structure are stacked and mounted on a floor near the turntable. A stereo TV camera that images a small member on the turntable and outputs a stereo image signal of the small member, and a rotary encoder that rotates the turntable and changes the direction of imaging with the stereo TV camera of the small member on the turntable. And a table rotating device that measures the rotation angle of the turntable and outputs the rotation angle, and the computer inputs and outputs signals to and from the stereo television camera and the table rotating device.
[0017]
Here, the computer, based on the program given in advance, from the stereo image signal, the measurement data from the laser displacement measuring instrument and the inclinometer, or the measurement data from the rotary encoder, Calculate and output the three-dimensional coordinates of each part including the bolt hole position. In addition, the dimension measuring apparatus 2 is disclosed in the article “Steel Bridge Temporary Assembly” published in pages 41 to 45 in the September 1997 issue of the magazine “Mechanization of Construction” published by the Japan Construction Mechanization Association. Since it is described in detail in “Inspection system (CATS)”, further explanation is omitted here.
[0018]
Further, the temporary assembly simulation apparatus 3 in the system of this embodiment has a normal computer pre-assigned with a CAD (Computer Aided Design) program, and a plurality of main measurements measured by the dimension measuring apparatus 2 by the operation of the computer. A plurality of three-dimensional main member models are created so as to have the dimensions of each member (main girder, cross girder, anti-tilt structure, etc.), and the plurality of main member models are created based on the steel bridge design data. Models of multiple connecting members (horizontal structure and attachment plate) are arranged three-dimensionally so that the assembly error as a whole falls within the allowable value, and the multiple main member models are connected with each other Is generated, dimension data of the connecting member models including the positions of the respective bolt holes is obtained, and the dimension data is output.
[0019]
Here, as shown in FIG. 1, the temporary assembly simulation apparatus 3 includes a main member model three-dimensional arrangement unit 3a as a main member model three-dimensional arrangement unit, an assembly error investigation unit 3b as an assembly error investigation unit, and a correction. The main member model three-dimensional arrangement unit 3a is arranged in the longitudinal direction of, for example, a steel bridge among the plurality of main member models. And connected to each other Of multiple main member models corresponding to multiple main girders One left end As determined by the user of the device , One for each main girder model described below Based on the steel bridge design data for the reference main member model As well as , For the reference main member model Remaining Said Main part model Based on the steel bridge design data, the main girder model is arranged by aligning in the longitudinal direction of the steel bridge so that the distance between the bolt holes of the main member model is the design dimension. Based on the design data, perform a pre-adjustment simulation to arrange multiple units The assembly error investigation unit 3b investigates mutual assembly errors of the plurality of main member models that have been arranged, and the correction data output unit 3c performs mutual assembly of the plurality of main member models obtained by the investigation. Based on the error data, correction data such as cutting the end portion of the main member corresponding to the main member model whose assembly error exceeds an allowable value is output.
[0020]
In addition, Main member model in which the above-mentioned assembly error exceeds the raised value First, for example, steel bridge Full length So that the assembly error is within the tolerance , For example, steel bridge One end Positioning the main member model located at the reference main member model, That Standard main member model Against The remaining main model The distance between the bolt holes is the design dimension Arrange so that Each between main part models Gap Maximum and minimum values Of the remaining main member models aligned in the longitudinal direction can be obtained by making the one with the largest dimensional error on the plus side as a correction target. Adjust the positions of the other remaining main member models so that each gap is a specified value (for example, 5 mm) or less. With A dimensional error caused by the position error of the main member model to be corrected generated as a result of the adjustment may be output as correction data for the main member corresponding to the main member model.
[0021]
The connecting member manufacturing apparatus 4 in the system of this embodiment is similar to the main member manufacturing apparatus 1 in that it includes a normal NC crease machine, a normal NC cutting machine, a normal NC drilling machine, and a normal welding machine. The NC crease machine, NC cutting machine and NC drilling machine are operated by numerical control based on the dimensional data of each connecting member model obtained and output by the temporary assembly simulation device 3, and added from the steel plate. A plate cutting process for cutting out the component plate of the contact plate and a drilling process for drilling a bolt hole at a predetermined position of the cut component plate are automatically performed, and thus a plurality of attachment plates are manufactured. In the same way, for horizontal structures made of angle steel, CT steel, etc., the steel material is cut to a predetermined size with an NC cutting machine, and a bolt hole is automatically drilled at a predetermined position of the steel material with an NC drilling machine. To make.
[0022]
Specifically, the temporary assembly simulation apparatus 3 described above automatically determines the adjustment amount of the three-dimensional position of the main member model in the entire steel bridge model as follows. The adjustment items that determine the amount of adjustment are the camber (position in the height direction) of each main member model and the main member model corresponding to the main beam corresponding to the main girder in the longitudinal direction. These are three items of the total length and the mutual interval of a plurality of the main girder models parallel to each other.
[0023]
First, a method for determining the camber adjustment amount will be described. In the camber adjustment, as shown in FIG. 2, the carry-over amount ΔH from the reference height (error 0) is set so that the camber error near the center of the main girder model is uniformly the above ΔH. At that time, the fulcrum of the main girder model is not adjusted for camber (upward movement), and the camber error is set to ΔH / 2, which is half of the above ΔH, at the joints (longitudinal connecting portions) J1 and J4 closest to the fulcrum of both ends. . The main reason for raising the main girder model as a whole is that after the actual main girder is assembled, the concrete flooring is constructed on the main girder, so the top surface of the concrete girder is flattened. This is because it is more convenient that the center part of the main girder is lower than the lower part in order to finish and make the slab thickness uniform. The other is that the camber tolerance is lower. This is because the adjustment is advantageous because it is defined larger on the upper side (plus) than (minus).
[0024]
For example, if the camber error is as shown by a broken line in FIG. 3 before the camber adjustment, the camber adjustment amount of each joint is calculated as in the following equation (1). Here, n is the number of joints, m is an integer from 1 to n, ΔC [m] is the camber adjustment amount, ΔH is the overshoot amount, and ΔCL [m] is the camber error (upper flange side) of the left side score of the joint m. ), [Delta] CR [m] is the camber error (upper flange side) of the right grade of the joint m, and j = 2 to n-1.
[Expression 1]

When the camber adjustment amount obtained by this calculation is applied, the camber error of the entire main girder model becomes an overturned state as shown by a solid line in FIG. Note that, as described above, the camber adjustment is performed for all main girder models that are parallel to each other.
[0025]
Next, a method for determining the adjustment amount of the total length of each main girder model will be described. The total length is adjusted by the distance between the bolt hole groups (usually composed of a large number of bolt holes aligned vertically and horizontally) at the ends of the main girder model on both sides of the field joint part constituting each joint. In the simulation before adjustment, the value of the design dimension is automatically input to the distance between the bolt hole groups, whereby the main member model is arranged as shown in FIG. 4, for example, and the main girder model is shown in FIG. It becomes a temporary assembly shape as shown in FIG. In this temporary assembly, the ideal simulation shape is that the overall length of each main girder model is within the specified value, and the gap between the above-mentioned field joint parts also satisfies the specified value. This is a shape in which the exits and exits are aligned (projected or retracted from the design position). FIG. 4 illustrates a side view of nine main member models arranged so as to constitute three main girder models.
[0026]
Therefore, in order to obtain such an ideal simulation shape, the adjustable range Pmin [k] to Pmax [k] (where k corresponds to the number of main girder models, and the example of FIG. Then, k = 1 to 3) is calculated as in the following formula (2). Here, k = 1 to nco (where nco is the number of consecutive main girder models, that is, the parallel number), and j = 1 to n [k] (where n [k] is the number of joints of each main girder model). Δmin and Δmax are the minimum and maximum allowable clearances (normally Δmin = 0, Δmax = 5 mm), and δmin [k, j] and δmax [k, j] are the simulation results before adjustment. The minimum and maximum values of the joint gap Lk are the total length of the main girder model in the simulation results before adjustment, and L0k is a specified value of the total length of the main girder model.
[Expression 2]

[0027]
Based on the adjustment range of each main digit model obtained as described above, this time, as shown in FIG. 5, a common adjustment range, which is a range in which a plurality of parallel main digits can be adjusted in common, It calculates as the following formula | equation (3). Here, nco is the parallel number of the main digit model as described above.
[Equation 3]

If the condition of P1 ≦ P2 is satisfied as shown in FIG. 5 between the maximum value P1 of the adjustment range lower limit Pmin and the minimum value P2 of the adjustment range upper limit Pmax thus obtained, a common adjustment range exists. It will be.
As shown in FIG. 6, P1 = Pmin [2] is larger than P2 = Pmax [1], the condition of P1 ≦ P2 is not satisfied, and there may be no common adjustment range. In this case, P1, which is the larger value, is forcibly determined as the adjustment point.
[0028]
After the common adjustment range and adjustment points are determined in this way, next, the adjustment amount of each main girder model is determined from the prescribed value of the total length of the main girder model. That is, here, as shown in FIG. 7, when one end position A1 of the main girder model is determined, there is a common adjustment range or adjustment point with respect to the line A2 which is the other end position determined from the specified value of the total length of the main girder model. The distance ΔLP0 from the line A2 to the adjustment point P0 from the specified value of the total length is determined according to the position of the position.
[0029]
As described above, assuming that the adjustment point P0 from the specified value of the total length is determined as shown in FIG. 8, for example, each main girder model is adjusted by extending the total length (G1, G3 in FIG. 8). On the contrary, a type (G2 in FIG. 8) in which the overall length is shortened and adjusted can be generated. The total length adjustment amount ΔLk for these is expressed by the following equation (4). Here, ΔLP0 is the distance from the above A2 line to the adjustment point P0 from the specified value of the total length, Lk is the simulation value of the total length of the main girder model, L0k is the specified value of the total length of the main girder model, k = 1 to nco (where nco is the parallel number of the main digit model).
[Expression 4]
ΔLk = ΔLP0− (Lk−L0k) (4)
[0030]
This adjustment of ΔLk becomes a problem of the clearance adjustment of each on-site joint portion of each main girder model described above. Here, assuming that the minimum value of the gap between each field joint portion is constant, the constant minimum value is expressed by the following equation (5).
[Equation 5]

Here, k = 1 to nco (where nco is the parallel number of the main girder model), j = 1 to n [k] (where n [k] is the number of joints of each main girder model), and δmin [ k, j] is the minimum value of the gap of each field joint in the simulation result before adjustment, and Δconst [k] is the above-mentioned constant minimum value.
Therefore, the adjustment amount Δx [k, j] of the gap in each joint is expressed by the following equation (6). This is given as an adjustment amount of the distance between the bolt hole groups of each field joint part.
[Formula 6]
Δx [k, j] = Δconst [k] −δmin [k, j] (6)
In the above-described method, the main member model located at the left end of each main girder model is placed at a predetermined position in FIGS. 4 and 8, and the three-dimensional positions of the other main member models are obtained. The main member model located at the left end of the girder model corresponds to the reference main member model.
[0031]
Next, a description will be given of a method for determining the adjustment amount of the mutual interval between a plurality of main girder models parallel to each other. Here, as indicated by broken lines in FIG. 9, a plurality of main girder models are divided into a plurality of blocks at each joint position (in the example of FIG. 9, three blocks of blocks 1 to 3), and the main main model is sequentially incremented in units of blocks. The mutual spacing of the digit model shall be adjusted.
[0032]
As a result of the simulation before adjusting the distance between the main girder models, there is a dimensional error in the model of the secondary member such as a horizontal girder or a tilting structure as a main member other than the main girder (this is also included in the main member model). 9 is obtained as a positional deviation between the bolt holes when the secondary member model is arranged, as indicated by a numerical value without parentheses in FIG. 9 (in this case as a positional deviation between the bolt hole groups as well). Can ask). In general, the outer diameter of the bolt (φ22 mm for M22) is 2.5 mm smaller than the inner diameter of the bolt hole (φ24.5 mm for M22), so the combined bolt holes at both ends of the secondary member are ± 5 mm. Can be inserted into the bolt holes at both ends, but the bolt cannot be inserted into one of the bolt holes if it exceeds ± 5mm. , ± 5 mm), the main girder model spacing must be adjusted.
[0033]
Here, since adjustment is performed in units of blocks as described above, first, an average value of dimensional errors of the secondary members, that is, a numerical value (unit: mm) shown in parentheses in FIG. 9 is calculated. And the average value of these is added to the width direction of the steel bridge (lateral direction of the main girder model), and the value of the total error before adjustment is obtained. In this case, in the example of FIG. 9, the total error values before adjustment for blocks 1 to 3 are +6.0 mm, +6.4 mm, and −1.8 mm, respectively.
[0034]
Next, the operator (operator) of the temporary assembly simulation apparatus 3 sets a target value for correcting this based on the total error value before adjustment. When connecting four main girder models with three secondary members in the width direction of the steel bridge as shown in the example, since the allowable value of each secondary member is ± 5 mm, the target value of the total error is ± 15 mm. Within the range, set as appropriate. In the example of FIG. 9, the target values of the total errors of 1 to 3 blocks are +5.0 mm, +7.5 mm, and 0 mm, respectively, and the error tendency of the three blocks is aligned on the 0+ side.
[0035]
Next, the adjustment amount of the mutual interval of the main girder model for each block is calculated. Here, the secondary member model after adjusting the spacing as illustrated in FIG. 10 in the case where four main girder models are connected in the width direction of the steel bridge with three secondary member (horizontal) models. The objective function that minimizes the sum of squares of the average dimension error is selected as in the following equation (7). Here, nco is the parallel number of the main girder model, εi is the average dimensional error of the secondary member model before the interval adjustment, and Δyi is the adjustment amount of the interval between the main girder models.
[Expression 7]

[0036]
Then, when adjusting the main digit model interval, it is assumed that the following conditional expression (8) is satisfied in order to satisfy the target value of the total error. Here, MB is a target value of the total error.
[Equation 8]

Therefore, the equation (7) and the equation (8) are converted into the problem of adjusting the interval of the main digit model so that the unconditional objective function G of the following equation (9) is minimized. Here, λ is Lagrange's undetermined multiplier.
[Equation 9]

[0037]
The minimization of G in the above equation (9) is performed by the following simultaneous equations (10) obtained by setting the equation obtained by partial differentiation of G with respect to each variable (Δyi, i = 1 to nco-1) as zero. It becomes a problem to solve.
[Expression 10]

[0038]
By arranging the above equation (10), the following equation (11) is obtained.
[Expression 11]

By substituting this into the conditional expression of equation (8), Lagrange's undetermined multiplier is obtained as in equation (12) below.
[Expression 12]

[0039]
Therefore, the adjustment amount of the mutual interval of the main girder model can be automatically calculated by the following equation (13) in which λ of the above equation (12) is substituted into equation (11).
[Formula 13]

[0040]
In block 2 in FIG. 9, each adjustment amount of the main digit model interval is obtained by the following equation (14).
[Expression 14]

[0041]
After that, the temporary assembly simulation is performed again using the adjustment amount of the main girder model interval obtained as described above. Here, prior to the re-simulation, is the adjustment amount of the main girder model interval appropriate? Judge whether or not. The criterion for this determination is the result of simply correcting each dimensional error average of the secondary member model with the adjustment amount of the main girder model interval obtained by the above equation (13) (estimated value of each dimensional error average of the secondary member model ) Is within | 5 | (± 5) mm, it is determined to be appropriate. For example, in the example shown in FIG. 9, the result shown in FIG. 11 is obtained, and therefore, the estimated values of the average dimensional errors of the secondary member model (in the brackets []) are all within | 5 | mm. Accordingly, in such a case, it is determined that an appropriate main digit model interval is given, and the process proceeds to the next process. On the other hand, if the estimated value of the average dimension error of any of the secondary member models exceeds | 5 | mm, the target value of the total error is changed and the estimated value of the average dimension error is | 5. It must be within | mm.
[0042]
In the simulation when adjusting the main girder model interval, the convergence value of the temporary assembly simulation result of the steel bridge model (the result of the camber adjustment and the total length adjustment of the main girder model) is used. As shown in FIG. 12, when the four main girder models G1 to G4 are connected in the width direction of the steel bridge, the convergence value is expressed by the coordinate system origin Cj, i (i = 1 to nco and nco are coordinate numbers (X, Y, Z) in the temporary assembly large coordinate system.
[0043]
The main digit model interval is adjusted by correcting the value of the origin Cj, i only in the Y-axis direction. Accordingly, here, the correction value in the Y-axis direction of each origin Cj, i is obtained as shown in the following equation (15) using the adjustment amount of the main digit model interval obtained as described above. Here, j = 1 to BL, i = 2 to nco, BL is the number of blocks (the number of main member models per main girder model), nco is the main girder station number, and ΔY [j, i] is A correction value in the Y-axis direction of the main member coordinate system origin Cj, i, AB [j] is an adjustment value of the total secondary member dimension error in block j (total error target value-total error value before adjustment), and Δy [j , i−1] is an adjustment amount of the main digit model interval in the block j.
[Expression 15]

When the above correction value ΔY [j, i] is specifically calculated for the example of FIG. 9, the result shown in FIG. 13 is obtained.
[0044]
Thereafter, the temporary assembly simulation apparatus 3 adds the correction value ΔY [j, i] obtained by the above equation (15) to the Y coordinate value of the convergence value described above, and adjusts the temporary digit model interval. Assembling simulation is performed, and the result is output by screen display or printing on the computer of the apparatus 3 so that the operator can confirm that the temporarily assembled steel bridge model satisfies various design conditions. At the same time, the dimensional data of each connecting member and the correction data of the main member that need to be corrected, obtained in the above process, are output.
[0045]
Therefore, according to the manufacturing system of the steel bridge structural member of this embodiment, the horizontal structure that connects the main girder and the horizontal girder as the main member in an oblique direction and the main girder as the main member are vertically connected. The connecting plate that connects in the direction and connects the main girder and the horizontal girder as the main member can be manufactured so that the assembly error of the assembled steel bridge falls within the allowable error, and those connecting members This eliminates the need for modification and remanufacturing, thereby reducing the labor and cost of manufacturing the steel bridge component.
[0046]
Further, according to the steel bridge component production system of this embodiment, the temporary assembly simulation device 3 processes the dimensional data of the bolt holes in units of groups, so that the processing of the dimensional data can be facilitated. . In addition, since the drilling of each bolt hole of the main girder, the horizontal girder and the counter tilting structure as the main member and the horizontal structure and the attached plate as the connecting member is performed by numerical control, each bolt hole group The positional accuracy between the bolt holes can be sufficiently high.
[0047]
And according to the temporary assembly simulation apparatus 3 of this embodiment, the gaps between the main members aligned in the longitudinal direction are equal to or less than a specified value and uniform, and a plurality of steel bridges are positioned within an allowable assembly error. When the main member is placed, correction data can be automatically obtained for the main member whose assembly error exceeds the allowable value. By correcting the main member based on the correction data, a plurality of main members can be corrected with the minimum correction. Can be reliably arranged within the allowable assembly error as a whole steel bridge.
[0048]
Although the present invention has been described based on the illustrated examples, the present invention is not limited to the above-described example. For example, the dimension measuring device 2 and the temporary assembly simulation device 3 may use a common computer together. In addition, the main member manufacturing apparatus 1 and the connecting member manufacturing apparatus 4 may share at least one of an NC crease machine, an NC cutting machine, an NC drilling machine, and a welding machine.
[0049]
Needless to say, the production system and the temporary assembly simulation apparatus of the present invention can be applied not only to the steel bridge described above but also to the production of other types of steel structures.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an embodiment of a production system for a steel structure constituent member of the present invention and an embodiment of a temporary assembly simulation apparatus of the present invention for the production system.
FIG. 2 is an explanatory diagram showing a basic concept of camber adjustment performed by the temporary assembly simulation apparatus of the embodiment.
FIG. 3 is an explanatory diagram showing how to give a camber adjustment amount of the temporary assembly simulation apparatus of the embodiment.
FIG. 4 is an explanatory diagram showing, in a side view, a simulation result before full length adjustment for each main girder model by the temporary assembly simulation apparatus of the embodiment.
FIG. 5 is an explanatory diagram illustrating a method for extracting a common adjustment range performed by the temporary assembly simulation apparatus according to the embodiment.
FIG. 6 is an explanatory diagram showing a case where the common adjustment range does not exist.
FIG. 7 is an explanatory diagram illustrating a method for determining an adjustment amount from a specified value for the total length, which is performed by the temporary assembly simulation apparatus according to the embodiment.
FIG. 8 is an explanatory diagram showing a side view of each main girder model in a state where the adjustment position of the full length is determined by the temporary assembly simulation apparatus of the embodiment.
FIG. 9 is an explanatory view showing a dimensional error value of the secondary member model in a plan view as a simulation result before adjusting the main girder model interval by the temporary assembly simulation apparatus of the embodiment.
FIG. 10 is an explanatory view showing an adjustment model of a main girder model interval in a plan view in the temporary assembly simulation apparatus of the embodiment.
FIG. 11 is a plan view showing an estimated value of the average dimensional error of the secondary member model when the main girder model interval is adjusted by the temporary assembly simulation apparatus of the embodiment.
FIG. 12 is an explanatory view showing the relationship between the temporary assembly large coordinate system and the coordinate system of each main member model in a plan view in the temporary assembly simulation apparatus of the embodiment.
FIG. 13 is an explanatory diagram showing, in a plan view, main girder model interval adjustment data obtained by the temporary assembly simulation apparatus of the above embodiment for the example shown in FIG. 9;
[Explanation of symbols]
1 Main member manufacturing equipment
2 Dimension measuring device
3 Temporary assembly simulation equipment
3a Main member model three-dimensional arrangement part
3b Assembly error research department
3c Correction data output part
4 Connecting member manufacturing equipment

Claims (3)

Steel structure design created in advance for steel structures formed by connecting the main members with the connecting members through bolts that are inserted and fastened together with the bolt holes of the main members and the bolt holes of the connecting members a main member manufacturing apparatus for fabricating the main members of the steel structure using a numerical control based on the data on at least blanking and drilling,
A dimension measuring device for measuring a dimension including the position of the bolt hole of the manufactured main member;
The bolt of their main member model causes multiple alignment of the main member model created in the longitudinal direction of the steel structure Hazuki group to the steel structure design data to have a main girder dimensions of the main member in the measurement A pre-adjustment simulation is performed in which a plurality of main girder models are arranged in parallel based on the steel structure design data, and the main girder model is arranged so that the distance between the holes becomes the design dimension. From the maximum value and the minimum value of each of the plurality of gaps between the main member models of each main girder model and the allowable maximum value and minimum value of the corresponding gaps in the steel structure design data, in parallel A common length adjustable range is obtained for a plurality of main girder models to be arranged, and the total length of the plurality of main girder models is obtained as the common length adjustable range. If the specified length of the steel structure design data is included, the common length adjustable range is obtained in the specified value, and the allowable value includes the specified length of the steel structure design data. If it overlaps with the range, the arrangement adjustment of the plurality of main member models is performed so as to align with the length of the end of the common length adjustable range close to the specified value, and the plurality of the plurality of main member models are adjusted with the adjusted arrangement. A temporary assembly simulation device for obtaining the dimension data of the connecting member so as to connect the main member models of
A connecting member manufacturing apparatus for manufacturing the connecting member by using numerical control based on the obtained dimensional data at least for drilling a bolt hole through which a bolt is inserted together with the bolt hole of the main member ;
Manufacturing system for steel structure components. The temporary assembly simulation apparatus obtains the position of the bolt hole of the main member model at the time of the pre-adjustment simulation and the arrangement adjustment of the plurality of main member models as position data of a hole group. The manufacturing system of the steel structure structural member described. A predetermined one reference main member model among a plurality of main member models created to have the dimensions of the main girder is arranged at a predetermined three-dimensional position based on the steel structure design data, and the reference main member model the distance between the bolt holes of the remaining said main member model are aligned in the longitudinal direction of the steel structure on the basis of the steel structure design data their primary member model is arranged such that the design dimension to A main member model three-dimensional arrangement means for performing a pre-adjustment simulation in which a plurality of main girder models are arranged in parallel based on the steel structure design data .
Assembly error investigating means for investigating an assembly error of the interval between the plurality of main member models that have been arranged;
Correction data output means for outputting correction data of the main member corresponding to the main member model whose assembly error exceeds an allowable value based on the assembly error data of the mutual intervals of the plurality of main member models obtained in the investigation;
A temporary assembly simulation apparatus for a steel structure constituent member manufacturing system according to claim 1 or 2, comprising:

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