地表面荷重에 依한 地中構造物에 생기는 應力에 관한 硏究

咸能洙 慶一大學校 1993 論文集 Vol.9 No.1

The stress of underground structures should be calculated to consider the earth pressure and the live load applied on the surface. It is generally calculate using the Janssen formula and Marston formula. It is known that the results of two formula are considerably different. In this paper, a modified formula is suggested and a stress formula is proposed to calculate the stress of underground structures by the live load, as folows : 1. amodified formula : P=27400(1-??)(B + B²) 2. a stress formula : ∑σ₂= P(1 +i){4K'₁+2(K'₁- K''₁)}

水路의 水理設計(計算)에 關한 考察 : 基礎的인 問題를 中心으로

함능수 慶北工業專門大學 1972 論文集 Vol.9 No.-

이상과 같이 고찰할때 수로수리설계시 다음과 같은것을 고려해야 한다. (1) h_L 계산시 등류에 대하여 성립한다. (Energy-equation에 있어서) (2) h_g나 h_f가 명확하지 않을때 Energy 방정식을 사용한다. (3) 수로의 수리설계시 조도계수 n의 선택은 수로의 벽형태 단면형 등에 따라 선정해야 한다. (4) 유량이 변화하는 곳에 도수위치가 변화하는 것은 구조물의 보안상 좋은 결과가 못된다. (5) 수로수리설계에 있어서 될수 있는 한 수로형은 등류로 설계함이 좋다 (6) 수로 수리설계에 있어서 이상과 같은 사항을 고려하여 구조물의 안정성을 기할 수 있는 설계가 필요하다고 본다.

構造物 解法에 관한 硏究(트러스)

咸能洙 慶一大學校 1989 論文集 Vol.5 No.1

Truss was used to construct the bridge of long spans, so that the stabilization and solution of truss are very important for smooth transportation of all traffic volumes. There are numerous solutions of truss, but, in this paper, the author study on the method of simple solution of truss. There are upper chords(U). lower chords(L), diagonal members(D) and vertical members(V) in the truss. So, here are simple formular, U=-??, L=??, D=±??, V=∑p for solution of Truss, it is very convenient to analysis of truss.

新川水域 保護(淨化)를 위한 基礎資料에 관한 硏究

咸能洙 慶北工業專門大學 1978 論文集 Vol.15 No.-

For the concemtration of city of populations, industrialization and modernization the Shinchom waters were numerous environmental pollution. In this paper, the author, studies on the basic data for purification out of Nuisance of Shinchon stream waters that its be sewer rather than stream. As a result of investigation and study of the basic data, the stream were polluted and from 100PPM to over 300 PPM of BOD form the numerous inlet sewage (Sanitary sewage, storm sewage, industrial waste) in to the Shin chon stream. By the K, (purification constant) it is too pollution for shinchom stream to take ability of self-purification. In order to secure to preservation of environmental from pollution. They are as follows, ① Industrial waste are treated by facilities of itself ② Sewer system are intercepting system for sewage ③ Sewage of Beom Oe chon are treated by the treatment facilities. ④ Facilities for sewage treatment of Shin chon waters are constructed, where are Shinchon down strean.

中河川流域에 있어서 計劃洪水量 算定에 關한 硏究

이장우,咸能洙 慶北工業專門大學 1978 論文集 Vol.15 No.-

In this paper, the author, offer the hydrological method of estimate for planned flood amount of medium-small River valley. The planned flood waters are estimated by the rational and kajiyama's methods. There are used frequency contraled probable rainfall intensity and probable rainfall amount data from adjacent observatory with Shin chon valley, are compared with inducted synthetic unit hydrograph that the relation formula used in the representative waters valley that similar with valley character.

變位解釋에 관한 硏究

咸能洙 慶一大學校 1991 論文集 Vol.7 No.1

The displacement analysis is very important to solve statically indetermined problems in the design of structures. In this paper, a simplicated technique is suggested of the displacement analysis, getting out of complicated technique in the past. Eduations referred to the simplicated technique are as; (1) y=M?? θA=M?? θc=M?? (2) Virtual works in structural analysis y=?? θ=??

교각 머리부의 강성에 따른 구조물에 거동에 관한 연구

咸能洙,孫上寔 경일대학교 2001 論文集 Vol.17 No.-

In this study, existing bridges are characterized according to the change of the number of bearings and the rigidity of the coping of pier. The change of the reaction of a substructure is also investigated according to the characteristic of the bridge. The results of this study are as follows ; 1.The increase of the number of bearings makes the distribution of the reaction even, but the existing bridge has a disadvantage that negative reaction occurs in the center of bridge. 2.The distribution of the reaction by means of the rigidity of the bridge is similar to that by means of MODEL 1 which does not consider the pier while the load is applied to the center or the outside of the pier, or the rigidity is increased. Specially, the total increase is 80% for the range of rigidity between 1 and 5.

炭素纖維를 混入한 無細骨材 콘크리트의 壓築强度 改善에 관한 硏究

이상수,박재만,함능수 경기대학교부설 산업기술종합연구소 1993 산업기술종합연구소 논문집 Vol.9 No.-

Coarse aggregates and fine aggregates, such as gravel and sand, which are main components of concrete, are being exhausted, due to an increase of large scale construction. Natural coarse aggregates might be substituted with crushed stones, however, it is very difficult to make artificial substitutes for fine aggregates. This study is directed at making concrete which does not need natural fine aggregates. In this study, a new concrete is obtained by mixing the carbon fiber with the no-fines concrete to improve the compressive strength of the no-fines concrete. In the experiment, the test consists of three water-cement ratios (W/C; 35%, 45%, 55%), three aggregat-cement ratios (A:C;4:1,6:1,8:1) and five carbon fiber ratios of total weight (Vf;0%,1%,2%,3%,4%). The results obtained from this test are as follows; 1. The maximum compressive strength of concrete(??) was obtained at 35% of Water-Cement ratio. 2. The maximum compressive strength of concrete(??) was obtained at 4:1 of Aggregate-Cement ratio. 3. The maximum compressive strength of concrete(??) was obtained around 1-2% of carbon fiber ratio, but it was decreased about 3-4% of carbon fiber ratio.

강관 기둥의 역학적 거동

咸能洙 慶一大學校 1999 論文集 Vol.16 No.5

The ultimate compressive strength of steel columns can be determined not only by the material strength but also by buckling. The tendency of a compressive member about buckling is usually affected by such factors as the types of end connections, eccentricity of applied loads, imperfection of column material, intial crookedness of columns, ect. The many results on the ultimate strength of steel columns have been accumulated to this data and each national design code is based primarily on column curves that been developed to fit with reasonable test results. In this study, the mechanical behavior and ultimate strength of circular hollow section columns are investigated with F.E.M In this F.E.M calculation the geometric and material nonlineality is taken into account. The columns with hinges supports are simulated. The strength of column mumbers calculated with F.E.M showed a reasonable agreement with rational design code. For the columns whose ends are connected with other member, the calculated ultimate strength are different from each othe according to the flexible stiffiness and lengths of members. From results of F.E.M analysis, effective buckling length factor was evaluated and compared with reference. The results analysised with F.E.M show higher strength than those suggested by the interaction diagram of the specification which are generally used for design.

2경간 연속곡선교의 격벽 강성에 따른 탄성거동 해석

咸能洙 慶一大學校 1999 論文集 Vol.16 No.2

In order to know the structural behavior of curved 2-span continuous steel box bridge, First, the beam element is compare with the plate element by means of change of section, thickness of diaphragm. Results of analysis, it is show that the less stiffness of diaphragm is, the more the displacement increase and the normal stress at outside-mid-span is subjected to more at inside point than at outside point. The normal stress at mid-support is subjected to more at outside than at inside. The less stiffness of diaphragm is, the more support reaction of outside and inside point is a large difference. The support reaction is subjected to less at inside point than outside.