Papers by Linas Gabrielaitis
The paper describes the design of pile foundation on the site of the Elektrenai power plant, Lith... more The paper describes the design of pile foundation on the site of the Elektrenai power plant, Lithuania. The foundation is aimed to support equipment of the power plant consisting of the gas turbine, the steam turbine and the generator. Besides high loads, the equipment had a strong dynamic impact on the foundation due to its working con-ditions and vibration. The pilling solution was adopted due to different reasons: i) the capacity of the soil to support great stresses over it; ii) the special requirements of the main equipment about settlements, movements and stresses. Pilling foundation was evaluated through immediate settlement analysis, which was carried out employing four most widely used methods. It included analysis of the soil data from cone and dynamic penetration tests, boreholes and laboratory tests. Soil properties were estimated from site investigation and soil exploration program according to Lithuanian standards. Pile settlement analysis showed that settlement value ...
Procedia Engineering, 2013
ABSTRACT The paper describes the estimating settlements of bored piles foundation on the site of ... more ABSTRACT The paper describes the estimating settlements of bored piles foundation on the site of the Elektrenai power plant, Lithuania. The bored piles foundation supports equipment of the power plant consisting of the gas turbine, the steam turbine and the generator. The piling solution was adopted for the following reasons: i) the insufficient capacity of the soil to support great stresses over it; ii) high requirements of slab settlements and bearing capacity with regard to the main equipment in power plant.). For settlement calculation five methods were employed, such as Bowles [1] and Schmertmann methods [2] and [3], the method described in EN 1997-2 [4], [5] and [6] and NEN 6743 [7], and finite element method applied in Plaxis 3D Foundation package. The results obtained by applying these methods where compared with experimental results on construction site. The experiment results were acquired from static load test of one test pile and four reaction piles.Piled foundation was evaluated through immediate settlement analysis and included analysis of the soil data from cone and dynamic penetration tests, boreholes and laboratory tests. Soil properties were estimated from site investigation of the Elektrenai power plant and soil exploration program according to Lithuanian standards. Pile settlement analysis showed that settlement value was 13.5 mm (pile toe settlement), and settlement value of elastic deformation of pile from vertical compressive loads was 2.1 mm, for the most conservative situation. For such structure, foundation settlement should not exceed 16 mm. Because the Elektrenai power plant has high reliability requirements, piles diameter of 880 mm and 29 m long were finally carried out to endure overall loads.
Journal of Civil Engineering and Management, Mar 10, 2014
ABSTRACT The article focuses on the method for evaluation of ultimate bearing capacity for a vibr... more ABSTRACT The article focuses on the method for evaluation of ultimate bearing capacity for a vibratory pile having acceleration data recorded during the tests. The simulation vibratory pile installation test was performed in the testing stand. Accelerations were recorded on the top of the simulation vibratory pile during the test. The static test was performed for the installed pile. After the review of rheological models of the base, the Smith rheological model was chosen for determination of bearing capacity of the vibratory pile as this model, the rigidity of the final element of the spring is modelled as the finite rigidity of the base. Between the base of the modelled pile and the soil, a finite interface element is used. The interface element transfers only compression but it does not transfer tension to the base rheological model. The general stiffness of spring's finite element in the chosen rheological model is determined from experimental data of the static pile test. During the modelling, the damping coefficients and the ultimate displacements (responses) of the pile's shaft and base, to which the friction element became active, were determined so that the modelled pile accelerations and displacement (response) would coincide as much as possible with measured accelerations and their calculated response. The modelled and measured accelerations and responses showed high similarity.
The paper describes the design of pile foundation on the site of the Elektrenai power plant, Lith... more The paper describes the design of pile foundation on the site of the Elektrenai power plant, Lithuania. The foundation is aimed to support equipment of the power plant consisting of the gas turbine, the steam turbine and the generator. Besides high loads, the equipment had a strong dynamic impact on the foundation due to its working con-ditions and vibration. The pilling solution was adopted due to different reasons: i) the capacity of the soil to support great stresses over it; ii) the special requirements of the main equipment about settlements, movements and stresses. Pilling foundation was evaluated through immediate settlement analysis, which was carried out employing four most widely used methods. It included analysis of the soil data from cone and dynamic penetration tests, boreholes and laboratory tests. Soil properties were estimated from site investigation and soil exploration program according to Lithuanian standards. Pile settlement analysis showed that settlement value ...
Procedia Engineering, 2013
ABSTRACT The paper describes the estimating settlements of bored piles foundation on the site of ... more ABSTRACT The paper describes the estimating settlements of bored piles foundation on the site of the Elektrenai power plant, Lithuania. The bored piles foundation supports equipment of the power plant consisting of the gas turbine, the steam turbine and the generator. The piling solution was adopted for the following reasons: i) the insufficient capacity of the soil to support great stresses over it; ii) high requirements of slab settlements and bearing capacity with regard to the main equipment in power plant.). For settlement calculation five methods were employed, such as Bowles [1] and Schmertmann methods [2] and [3], the method described in EN 1997-2 [4], [5] and [6] and NEN 6743 [7], and finite element method applied in Plaxis 3D Foundation package. The results obtained by applying these methods where compared with experimental results on construction site. The experiment results were acquired from static load test of one test pile and four reaction piles.Piled foundation was evaluated through immediate settlement analysis and included analysis of the soil data from cone and dynamic penetration tests, boreholes and laboratory tests. Soil properties were estimated from site investigation of the Elektrenai power plant and soil exploration program according to Lithuanian standards. Pile settlement analysis showed that settlement value was 13.5 mm (pile toe settlement), and settlement value of elastic deformation of pile from vertical compressive loads was 2.1 mm, for the most conservative situation. For such structure, foundation settlement should not exceed 16 mm. Because the Elektrenai power plant has high reliability requirements, piles diameter of 880 mm and 29 m long were finally carried out to endure overall loads.
Journal of Civil Engineering and Management, 2014
ABSTRACT The article focuses on the method for evaluation of ultimate bearing capacity for a vibr... more ABSTRACT The article focuses on the method for evaluation of ultimate bearing capacity for a vibratory pile having acceleration data recorded during the tests. The simulation vibratory pile installation test was performed in the testing stand. Accelerations were recorded on the top of the simulation vibratory pile during the test. The static test was performed for the installed pile. After the review of rheological models of the base, the Smith rheological model was chosen for determination of bearing capacity of the vibratory pile as this model, the rigidity of the final element of the spring is modelled as the finite rigidity of the base. Between the base of the modelled pile and the soil, a finite interface element is used. The interface element transfers only compression but it does not transfer tension to the base rheological model. The general stiffness of spring's finite element in the chosen rheological model is determined from experimental data of the static pile test. During the modelling, the damping coefficients and the ultimate displacements (responses) of the pile's shaft and base, to which the friction element became active, were determined so that the modelled pile accelerations and displacement (response) would coincide as much as possible with measured accelerations and their calculated response. The modelled and measured accelerations and responses showed high similarity.
Inzinerine Ekonomika-Engineering Economics (4), 2009
The aim of this research is to reduce a project development time and costs in building design and... more The aim of this research is to reduce a project development time and costs in building design and construction industry. It is performed by managing project technical documentation and digital data, which involves the complete life cycle of design documentation and design-related data inside CAD applications. Life cycle of design documentation and design-related data is achieved through the engineering document management system (EDM). EDM system founded on electronic archive system, which stores and distributes all technical information. The electronic archive is based on reference model for an Open Archival Information System (OAIS). As OAIS is a universal and uniform system, a technological development is required for customizing it to a specific industry (such as, building design and construction industry). Such development is presented in this work with an emphasis on management of projects document properties and their inheritance. The document properties play an important role in an archive, as they represent an instrument for performing any manipulations with a document (such as submission, distribution, search, modification and so on). Thus, any document placed in an archive has to be accompanied by document properties. This issue is addressed because the straightforward attachment of properties directly to a document introduces a lot of mistakes. This may lead to misplacement of document in archive system. Instead of this, in a proposed approach the properties were attached to the project structure (also called hierarchal tree).
Statybinės konstrukcijos ir technologijos, 2009
The complexity of engineering CaD design and model-ling requires the effective management of team... more The complexity of engineering CaD design and model-ling requires the effective management of teamwork and internal collaboration across technical departments. The designed objects usually have a large and complex struc-ture where various specialists have to simultaneously ...
… of civil engineering and management, 2006
The problem of managing digital design data including drawings, specifications and other technica... more The problem of managing digital design data including drawings, specifications and other technical data in building design and construction units is a real challenge, especially when there is a need to structure the design information across building design ...
Engineering Structures and Technologies, 2012
This work concerns the design of bored piles on the site of Elektrenai Power Plant in Lithuania. ... more This work concerns the design of bored piles on the site of Elektrenai Power Plant in Lithuania. Equipment for supporting bored pile foundation in the power plant consists of a gas turbine, a steam turbine and a generator. The foundation not only endures high loads but also sustains a strong dynamic impact due to the vibration of equipment in the power plant under working conditions. A solution to the pilling problem was adopted for the following reasons: i) the insufficient capacity of soil to support acute stresses; ii) high requirements of slab settlements and bearing capacity with regard to the main equipment used in the power plant.The objective of this work is to assess the methods used for estimating immediate settlement and carrying capacity of the pile considering cone penetration tests conducted in Elektrenai power plant. For settlement estimation, four methods, including Bowles (Bowles 1997) and Schmertmann methods (Schmertmann 1978) as well as the methods described in EN 1997-2 and NEN 6743 (NEN 6743:1991/A1:1997) were employed. A carrying capacity of the pile was evaluated with the help of direct methods that utilize data on the cone penetration test (CPT). The following direct methods such as the Schmertmann method (Schmertmann 1978), the de Ruiter and Beringen method (de Ruiter, Beringen 1979), the Bustamante method (LCPC) (Bustamante, Gianeeselli 1982) and the methods described in EN 1997-2 and NEN 6743 (NEN 6743:1991/A1:1997) were applied.Pilling foundation was evaluated performing immediate settlement analysis and included the examination of soil data received from cone and dynamic penetration tests, boreholes and laboratory tests. Soil properties were estimated taking into account investigation into the site of Elektrenai power plant and a soil exploration program developed according to Lithuanian standards. Pile settlement analysis showed that settlement value made 13.6 mm (pile toe settlement) and the settlement value of an elastic deformation of the pile from vertical compressive loads was 2.3 mm, for the most conservative situation. For such structure, foundation settlement should not exceed 16 mm. Elektrenai power plant has high reliability requirements, and therefore the pile having the diameter of 800 mm with a pile length of 27 m was adopted to endure overall loads.
Uploads
Papers by Linas Gabrielaitis