Quota, Consumption Standards and Calculation Rules for High-Speed High-Pressure Jet-Mixing Composite Piles (DMC Piles)

Officially issued by the Hebei Provincial Department of Housing and Urban-Rural Development, the Shandong Provincial Department of Transport, and others

Recently, the quota, consumption standards and calculation rules for the high-speed high-pressure jet-mixing composite pile (DMC pile), a core technology independently developed by Beijing Zhongyan Dadi Technology Co., Ltd. (hereinafter referred to as "Zhongyan Dadi"), have been officially issued successively by the Hebei Provincial Department of Housing and Urban-Rural Development, the Shandong Provincial Department of Transport, and others.

In order to comply with the development of various new technologies, new processes and new materials in the construction engineering field of Hebei Province and to meet the needs of provincial construction engineering market pricing, the Hebei Provincial Green Building Promotion and Construction Engineering Standards Compilation Center organized the Cangzhou Construction Engineering Standards and Cost Service Center, the Handan Construction Engineering Cost Management Station and other relevant units to compile the "Construction Engineering Consumption Standards and Calculation Rules (Construction Engineering)" based on the "National Unified Basic Quota for Construction Engineering - Hebei Province Consumption Quota" (HEBGYD-A-2012) and in light of the actual situation of Hebei Province, in accordance with the requirements of the "Notice of the General Office of the Ministry of Housing and Urban-Rural Development on Issuing the Work Plan for Engineering Cost Reform" (Jian Ban Biao [2020] No. 38). The document was issued by the Hebei Provincial Department of Housing and Urban-Rural Development on April 28, 2023, came into effect on May 1, 2023, and was disseminated on July 11, 2023 to the housing and urban-rural development bureaus (construction bureaus) of all cities in Hebei Province (including Dingzhou and Xinji) and the Construction and Transportation Administration Bureau of the Xiong'an New Area Management Committee. Among them, three sub-items for high-speed high-pressure jet-mixing composite piles were added in Chapter 2, detailing the various work contents and consumption standards of DMC piles, which can serve as a reference for high-speed high-pressure jet-mixing composite pile projects in construction engineering in Hebei Province and other provinces.

In order to meet the pricing needs of highway engineering projects in Shandong Province and to reasonably determine and effectively control the cost of six highway engineering items including high-speed high-pressure jet-mixing composite piles, the Engineering Construction Affairs Center of the Shandong Provincial Department of Transport, together with Shandong Jiaotong University, organized the compilation of the "Supplementary Budget Quota for Six Highway Engineering Items Including High-Speed High-Pressure Jet-Mixing Composite Piles (Trial)".

This supplementary quota is used in conjunction with the Ministry of Transport's "Measures for the Compilation of Estimates and Budgets for Highway Engineering Construction Projects" (JTG 3830-2018), the "Budget Quota for Highway Engineering" (JTG/T 3832-2018) and the "Quota for Machinery Shift Costs in Highway Engineering" (JTG/T 3833-2018). It is the basis for compiling construction drawing budgets and also the foundation for compiling engineering estimate quotas (indicators), and is applicable to new construction, reconstruction and expansion projects of highway construction. This supplementary quota is an engineering budget quota expressed in terms of consumption of labor, materials and machinery shifts. When compiling budgets, the labor costs, material costs and machinery use costs shall be calculated in accordance with the relevant provisions of the "Measures for the Compilation of Estimates and Budgets for Highway Engineering Construction Projects" (JTG 3830-2018) and the "Supplementary Provisions of Shandong Province on the Compilation of Investment Estimates and Budgets for Highway Engineering Construction Projects" (Lu Jiao Jian Guan [2019] No. 25). This supplementary quota was issued by the Shandong Provincial Department of Transport on December 11, 2023 and came into trial implementation on January 1, 2024. Among them, a sub-item for high-speed high-pressure jet-mixing composite piles (DMC piles) was added in Section 3 of Chapter 4, detailing the various work contents and engineering quantity quota standards of DMC piles, which can serve as a reference for high-speed high-pressure jet-mixing composite pile projects in new construction, reconstruction and expansion projects of highway construction in Shandong Province and other provinces.

Zhongyan Dadi has always been committed to the research, development and application of characteristic geotechnical engineering technologies and materials, continuously upgrading and transforming equipment, improving process flows and the compilation of supporting quotas, and promoting technological innovation in the geotechnical industry. Among them, the DMC composite pile technology has been widely applied nationwide in major projects in various fields such as industrial and civil buildings and bridge engineering. The release of the quota, consumption standards and calculation rules related to DMC pile technology in this round has also laid a good foundation for the promotion and application of DMC pile technology across the country. Carrying forward the past and opening up the future, Zhongyan Dadi will continue to increase investment in the research and development of core technologies, core processes and materials, continuously enhance product advantages, and make its modest contribution to the development of the geotechnical engineering industry toward multi-field, intelligent, energy-saving and carbon-reducing, cost-reducing and efficiency-enhancing directions.