Abstract
In recent decades, there has been a huge rise in the amount of investments and resources put into hydropower construction projects. Thereupon, it is becoming an urgent need to study how to estimate the input so as to control total cost effectively and utilize the resources adequately. With that in mind, this paper introduced the process of construction productivity determination for the anti-sliding pile of Xiluodu Hydropower Project, as a typically measured object. The determination work includes: choosing timing observation method to measure labor and machinery productivity; selecting real-time writing method to measure material productivity; then adopting probabilistic evaluation method to analyze the obtained data resulting from construction productivity; finally forming the consumption quota per unit pile length through comprehensive arrangement of the above steps. Significantly, the research conducted may provide a platform for both the related researchers and practitioners to appreciate the construction and measurement processes of the anti-sliding pile and may pave the way for builders and managers conducting similar projects in future to gain a clear understanding of the efficiency and cost control.
Highlights
With the growing requirements for electricity, the past few decades have seen rapid development and expansion of the hydropower industry in our country
The number of constructed dams almost accounts for half of the total dams which exist in the world and the capital and resources are being increasingly invested in the hydropower construction projects
As a measure of the output of production factors over a defined period of time or a measure of how well the factors are utilized, construction productivity is the basis of determination of consumed labor, materials and machineries; it is a foundation of scheduling and cost prediction; it is an important tool to strengthen enterprise management for helping in economizing on input
Summary
With the growing requirements for electricity, the past few decades have seen rapid development and expansion of the hydropower industry in our country. With the expansion of hydro-power project scale and the increase in construction technology difficulties, the construction process has been improved and innovated, resulting in that the current quota cannot meet all the needs of actual productivity. The research on the productivity and evaluation of anti-sliding pile is totally blank and has nocomplete valuation foundation, causing great difficulties for reasonably confirming and effectively controlling corresponding actual cost. To meet the management needs of projects adopting anti-sliding pile technology to stabilize the slope, on-site technical determination has been conducted at each main stage of the anti-sliding pile construction belonging to Xiluodu project, including pile holing and wall retaining, reinforcing cage binding and pile-core concrete pouring. Xiluodu hydropower station is a key project included in the national “tenth five-year” plan outline and approved by the Chinese State Council.
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