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Ground anchors = tension force-vibra...

Rincent, Jean-Jacques Henri.

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Ground anchors = tension force-vibratory analysis /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Ground anchors/ by Jean-Jacques Henri Rincent.
其他題名:	tension force-vibratory analysis /
作者:	Rincent, Jean-Jacques Henri.
出版者:	Singapore :Springer Nature Singapore : : 2024.,
面頁冊數:	xi, 159 p. :ill. (chiefly col.), digital ;24 cm.
內容註:	Introduction -- Waves- Vibratory analysis -- Phases of work -- Steels -- Length of the tie rods -- Dynamic stiffness -- Diameter of the tie-rod with its cement grout -- Horizontal anchors -- Earth pressure -- Statics Tests -- Interest of ND tests -- Corrosion -- Load cells -- Fatigue phenomenon -- Loss of tension -- Re-tensioning -- Sampling -- Static and dynamic tests -- Accuracy of measurements -- Examples -- Conclusions.
Contained By:	Springer Nature eBook
標題:	Tie-rods. -
電子資源:	https://doi.org/10.1007/978-981-97-4414-5
ISBN:	9789819744145

Ground anchors = tension force-vibratory analysis /
Rincent, Jean-Jacques Henri.

Ground anchorstension force-vibratory analysis /[electronic resource] :by Jean-Jacques Henri Rincent. - Singapore :Springer Nature Singapore :2024. - xi, 159 p. :ill. (chiefly col.), digital ;24 cm.

Introduction -- Waves- Vibratory analysis -- Phases of work -- Steels -- Length of the tie rods -- Dynamic stiffness -- Diameter of the tie-rod with its cement grout -- Horizontal anchors -- Earth pressure -- Statics Tests -- Interest of ND tests -- Corrosion -- Load cells -- Fatigue phenomenon -- Loss of tension -- Re-tensioning -- Sampling -- Static and dynamic tests -- Accuracy of measurements -- Examples -- Conclusions.

Open access.

This open access book introduces a non-destructive vibration analysis method for calculating the internal tension force of tested tie rods. This method was formalized in 2003 and patented after two years of investigation, with the patent expiring in 2005. The objective of the book is to present this method through numerous concrete examples. It covers the theory and principles of instrumentation, explaining how vibratory responses are analyzed to calculate the free and total lengths of the tie rod, as well as its diameter, which includes the reinforcement and its grout. The data obtained from this method can be utilized to: Verify that tie rods adhere to drawings Resize tie rods A notable strength of this book lies in demonstrating the relationship between dynamic stiffness and the tension force of the tie rod, along with the calibration method using static tensile tests. However, performing static tensile tests at heights poses difficulties due to equipment weight, and there is a genuine risk of failure, especially for older tie rods. The book addresses important aspects such as the uncertainty of results and sampling. The examples provided in the book primarily stem from tests conducted in Brazil, where more than 2,000 tie rods were tested over a two-year period on motorway and railway retaining walls. In practical terms, this amounts to 16,000 non-destructive tests as each tie rod is tested eight times. These aging structures, in existence for several decades, exhibit load losses ranging from 1% to 5.5% per year during these periods. The book acknowledges the observation of cyclic load effects on these reinforcements, which warrant further investigation. In one of the tested walls, a limited number of tie rods were re-tensioned. Retaining wall managers increasingly employ this method for maintenance diagnostics. It allows for a representative sample to be taken, providing insight into the existing conditions.

ISBN: 9789819744145

Standard No.: 10.1007/978-981-97-4414-5doiSubjects--Topical Terms:

3722928
Tie-rods.

LC Class. No.: TA417.7.T4

Dewey Class. No.: 620.11241

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505 0 $a Introduction -- Waves- Vibratory analysis -- Phases of work -- Steels -- Length of the tie rods -- Dynamic stiffness -- Diameter of the tie-rod with its cement grout -- Horizontal anchors -- Earth pressure -- Statics Tests -- Interest of ND tests -- Corrosion -- Load cells -- Fatigue phenomenon -- Loss of tension -- Re-tensioning -- Sampling -- Static and dynamic tests -- Accuracy of measurements -- Examples -- Conclusions.
506 $a Open access.
520 $a This open access book introduces a non-destructive vibration analysis method for calculating the internal tension force of tested tie rods. This method was formalized in 2003 and patented after two years of investigation, with the patent expiring in 2005. The objective of the book is to present this method through numerous concrete examples. It covers the theory and principles of instrumentation, explaining how vibratory responses are analyzed to calculate the free and total lengths of the tie rod, as well as its diameter, which includes the reinforcement and its grout. The data obtained from this method can be utilized to: Verify that tie rods adhere to drawings Resize tie rods A notable strength of this book lies in demonstrating the relationship between dynamic stiffness and the tension force of the tie rod, along with the calibration method using static tensile tests. However, performing static tensile tests at heights poses difficulties due to equipment weight, and there is a genuine risk of failure, especially for older tie rods. The book addresses important aspects such as the uncertainty of results and sampling. The examples provided in the book primarily stem from tests conducted in Brazil, where more than 2,000 tie rods were tested over a two-year period on motorway and railway retaining walls. In practical terms, this amounts to 16,000 non-destructive tests as each tie rod is tested eight times. These aging structures, in existence for several decades, exhibit load losses ranging from 1% to 5.5% per year during these periods. The book acknowledges the observation of cyclic load effects on these reinforcements, which warrant further investigation. In one of the tested walls, a limited number of tie rods were re-tensioned. Retaining wall managers increasingly employ this method for maintenance diagnostics. It allows for a representative sample to be taken, providing insight into the existing conditions.
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