PROJECTS OF ARTIFICIAL STRUCTURES
Road overpass at the production site of the Karaganda Metallurgical Combine
Overpass was built in 1975 on a very limited area of blast furnace shop for the motor vehicles and pedestrians’ passage through the automobile transit, pipelines and railways.
The overpass has the H-like shape in the plan.
The total length of the flyover is 920 meters.
Single-rack type supports with dual console bols were applied.
Span structures, 24 meters in length, are made of pre-stressed reinforced concrete.
At the intersections with a fan pig iron rail, the overpass has two multi-beams span structures 42 meters long, made of metal, with metal orthotropic plates on the roadway.
Construction height of metal span structures reduced to construction reinforced concrete span structures height, covering the other railways and determining the total height of overpass.
Specially designed structures have allowed to reduce the length of the overpass congresses, and successfully fit all of the existing structure in factory building.
Span structures and supports are equipped with thermal protection in the field of possible stops of trains with hot iron.
Road overpass to Almaty over the highway and railway
Overpass was built in 1971-1973 within the urban area with estimated seismicity of 10 points.
The angle of intersection is 50 degrees.
Overpass has a width of 25 meters, which provides accommodation of six workers and two safety lanes of vehicles.
Building design is a slash of continuous full frame 24.0 + 10 X 30.0 + 24.0 m, made of ordinary reinforced concrete.
Multi-beams frame crossbars are forming the reduced construction height span structures.
Five intermediate supports are made as pyramidal racks, set on foundations with smaller bases.
The circular hinges applied in bearing supports areas.
Supports’ basis – pile gratings on the hanging reinforced concrete piles.
The extreme spans are based over the mobile support parts on abutment walls, coupled with concrete retaining walls of approaches to the overpass.
Technically this overpass is unique.
It has the following innovative solutions:
⇒ no sidewalk roadway
⇒ completely continuous construction with the device of deformation seams at the interfacing with foundations
⇒ reduced building height that is relevant to the span length as 1/45
The bridge overpass across the Neris river in Vilnius
The bridge was built in the center of the capital of Lithuania in 1979.
The river at the point of the bridge overpass has a steep bend.
The excess of the right shore above the left is about 8 m.
The asymmetrical bridge construction is accepted in view of the specifics of local circumstances.
Construction scheme is 30+40+92+40 m.
Full bridge length is 204.5 m. Bridge width – 32.2 m – is designed for placement the roadway (six lanes), dividing strip and two sidewalks.
Span structure of beam system has a curvilinear shape of the bottom boom.
Beams structural height continuously varies from 1.6 m on the abutment pier to 6.8 m on the anchor support #4.
Six pre-stressed beams are assembled from blocks of box-section with variable height up to 2.5 m with assembly mass that is within 20 tonnes.
Installation was carried out by hanging build with glued joints based on epoxy resins.
The continuous span structure has still bearing on the strong support # 4.
Supports # 2 and #3 are made as thin shaking walls.
There is a possibility of redistribution of efforts by regulation of the span construction end on the support #5.
The movable supporting part made as drag link that takes negative responses.
Bridge supports rest on pile foundations.
Transportation and communication bridge in Vilnius
The bridge was built in Vilnius in 1995.
Ttransportation and communication bridge over the river Neris is designed to pass vehicles and pedestrians; telephone conduit, two lines of heating pipeline (800 mm diameter) and two lines of water supply system (400 mm diameter) laying.
Additional possibility of gas pipeline laying (with a diameter of 400 mm), as well as lighting cable, electricity and communications is also provides.
The bridge has a total length of 195.7 meters and 22.5 meters width. It was designed for placement of four road traffic lanes and two sidewalks.
Composed of four box-like blocks span with continuous beams under the scheme 42+84+42 m is made of pre-stressed concrete.
Height of box-like blocks is 3.2 m.
Blocks sizes are determined taking into account the possibility of transportation on city streets and the installation conditions.Pre-stressed reinforcement is located in the upper and lower plates of boxes in landlocked conduits formed with the help of extracted plastic tubes.
The spaces between the main beams under the roadway slab are used for communication installation.
The supports body consists of four separate prefabricated monolithic pillars up to 15 m.
Supports grounds are the drilled pillars with a diameter of 1.2 m.
Communication cameras per foundations are available for communication networks routing and maintenance.
Combined bridge over the Selenga river
In 1983 the road part of the bridge over the navigable river Selenga in Buryatia, designed for joint highway crossing Ulan-Ude – Chita and the railway access road to the chemical plant was commissioned.
The bridge length is 600 meters. Construction scheme is 24+6 x 88+24 m.
Railway and highway parts of the bridge have overall supports and regulatory facilities, combined roadbed for the closures to the foundations, but spans are separate with the carriageways at the same level.
Supports are massive type, bunk, in the upper tier – double-pillars, based on high concrete gratings on bored pillars.
The intermediate supports body faced with concrete contoured blocks across the height, and the bow edges of the lower tier – with natural stone.
The railway part of river crossings are blocked by a metal truss with ride from below, and auto traffic is blocked by continuous beamed steel – reinforced span riding on top.
The extreme spans – concrete beamed.
Railway bridge in Tashkent across the Chirchik river
Railway bridge with overpass on the right shore of the river was built in 1983.
The total length of construction is 770 m.
Building spans made of pre-stressed concrete have a length of 26.3 m.
Massive precast-monolithic river bed bridge bearings are based on high concrete gratings on bored pillars.
Overpass has a length 452 m, located on a curve of radius 500 m.
Flyover part supports are single-pillars with dual console crossbars on the natural basis.
Flyover crosses the highway and passes through the territories of industrial buildings.
Due to the fact, that the building is located in the city, constructions correspond to high architectural requirements.
Spans from the facade are protected by special fascia constructions.
The railway overpass in Almaty
Crossover junction at the intersection of railway with the city’s highway developed in accordance with the general plan of the city, in a constructive solution displays extremely complex situational conditions.
At the area of intersection there are underground utilities, such as heat pipeline, water system, sewage, high voltage cables, communication cables, as well as a number of aircraft electrical networks.
On the approach to the overpass for the bridge clearance the railroad is raised by 2.2 meters and the roadway of the street recessed by 4.5 m.
Scheme of spans is 16.5 + 2×18.4 + 16.5 m, crossover length is 76 m.
Reinforced concrete spans have a lower building height.
Intermediate spans are covered with continuous span 36.8 meters long.
Reinforced concrete frame type supports set on the natural basis.
City Road overpass in Almaty
Road overpass was built in 1981 at the intersection of two city streets.
Expressway is skipped in the top tier.
The construction of the overpass was defined by architectural and geophysical conditions.
Strut-braced-console system overpass is a prefabricated-monolithic reinforced concrete frame, overlying the street width of 24 m and placed in a groove.
Span structures are plate-beamed.
Abutments are multi-poled, tilted towards the passage.
At the top the racks are mounted in the monolithic spans area, below – in the body of abutments.
The edges of the extreme spans consoles are based on the massive abutments, face facets of which are cut on recess slopes.
The support-abutments basis is provided by bored pillars.
In addition to the external transport problems in projects, the questions of intra-plant transport development, maintenance and storage facilities organization were considered.
Institute carried out a large amount of work on the design of repair and operational management of rail and road transport, including track-repair workshops.
A number of branch depot repair locomotives bases, major repair and maintenance vehicles bases, including heavy-duty 75-tonnes dump trucks BelAZ, the combined repair rail and roads transport bases, points of coaches preparing and other complex objects were designed.
Locomotive Depot of Industrial Association “Karagandaugol”. Granulated slag warehouse of Chimkent phosphorus plant
In many enterprises, the Institute has solved the issues of complex mechanization loading works.
Storage device systems for raw materials and freight logistics were built on project of the Institute: at the New-Zhambyl, Chimkent phosphate plants, at Ust-Kamenogorsk, Leninogorsk, Irtysh Polymetallic complexes, at the East Kazakhstan Machine-Building Plant, the Altai ore-dressing plant and many others.
The schemes of processing and delivery on base of containers and pallets usage for intra-plant handling were implemented at a number of companies.