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Zastosowanie diagramów zniszczenia do oceny trwałości stalowych dźwigarów mostów niskowodnych

100%

Mańko Z. , Duchaczek A.

tom Nr 2

29--39

Autorzy przedstawili procedury pozwalające oszacować z wystarczającą dokładnością krytyczne wielkości pękania lub krytyczne wartości obciążenia zewnętrznego stalowych dźwigarów mostów niskowodnych bez potrzeby przeprowadzania każdorazowo złożonych obliczeń i badań.

Zastosowanie kompozytów w mostach wojskowych

100%

Kamyk Z. , Szelka J.

2009

tom Nr 5

133-142

The needs of expeditionary forces involve the use of light-weight, short-span bridges so that their transport by air would be possible. A project is currently being developed in USA aimed at the elaboration of a Composite Army Bridge (CAB) assault bridge and a Modular Composite Bridge - MCB logistic bridge. In 2004 CAB successfully underwent fatigue tests. A 14 m-long, all-composite treadway bridge span was loaded using an MLC 100 vehicle and it withstood 20 000 load cycles. The MCB will be constructed with 7 m of box modules and a 6.5 m access ramp. A 26 m-long and 4 m-wide bridge span is to provide the traffic ability of MLC 65. Furthermore, works on a 10 m-long, MLC 30 composite bridge are also developed in Canada. The paper presents also the American concept of employing a deployable bridge system utilising composite structure. In order to formwork and reinforce the plate, fibre reinforced polymer composites (FRP) were used. The girder structure is made of aluminium pipes forming diamond truss with curved bottom chord. After they are integrated in the structure, the top chord nodes are connected through concrete deck slab cast in-situ. The tests indicated that the use of polymer composites in military bridges and mobile structures are well justified.

Specyfika badań odbiorczych i eksploatacyjnych mostów wojskowych

88%

Kamyk Z. , Szelka J.

tom Nr 8

159-168

The paper presents planning and organizing issues of military bridges testing. The specific character and complexity of such constructions result in the fact that they can be treated both as constructions and as machines. Such an approach involves a wide range of tests connected with integration of a system consisting of in bridge span, bridgelayer and vehicle. The protocol involved with qualification tests of military bridges is exemplified here by MS-20 mechanised bridge, while the exploitation tests are presented in detail while investigating the technical condition of Polish PP-64 pontoon bridge. Furthermore, methods and tools applied for exploitation of assault bridges worldwide are included in the paper.

Procesy zmęczeniowe w mostach wojskowych

88%

Duchaczek A. , Kamyk Z. , Mańko Z.

2009

tom Nr 5

63-82

The paper is presented the fatigue strength of military bridges. Further in the article the author provides details on these issues in the NATO's countries. The paper also describes the Polish experiences in fatigue research of military bridges structures.

Ocena zdolności transportowej pojazdów pod kątem ich wykorzystania w systemie mostów wojskowych

75%

Kuczmarski F. , Łopatka Ł.

tom Nr 32

69--81

Badania zmęczeniowe dźwigarów stalowych stosowanych w niskowodnych mostach wojskowych

75%

Duchaczek A. , Mańko Z.

2009

tom Nr 5

83-97

There are special requirements concerning bridges servicing high-velocity transport. Single track single span railway steel truss viaduct of 93 m theoretical length was tested and numerically analysed. The aim was to assess its applicability to transport of 300/350 km/h velocity and set the basis for its modernization design. The key role played dynamic tests and computations. Their results are presented In the paper. The test and computation results proved that the structure in concern may be adapted to transport of velocity up to 350 km/h. Design computations of modernization should be completed with dynamic analysis under actual loading meant to run on the viaduct.

Dobór struktury wytrzymałościowej przęsła mostu towarzyszącego

75%

Kuczmarski F. , Marecki P.

tom Nr 29

125--136