Is there any simple way to calculate the unit price of tunnel excavation?

1. Comprehensive unit price, labor cost, material and equipment cost, machinery cost + management fee + profit.

2. Fully integrated unit price, labor cost, material and equipment cost, machinery cost + management fee + profit + fee + tax.

1 Comprehensive unit price method.

This method is the same as the calculation method of the comprehensive unit price of the sub-project project, that is, the measure fee is calculated according to the physical quantity and the physical unit price consumed according to the need, and is applicable to the measure items that can calculate the engineering quantity, mainly referring to some projects that are closely related to the engineering entity, such as concrete formwork, scaffolding, vertical transportation, etc. Unlike sub-projects, it is not required that the comprehensive unit price of each measure item must include each of the labor costs, material costs, machinery costs, management costs and profits.

2 Parametric valuation.

Parametric valuation refers to the calculation according to a certain base multiplication coefficient method or a custom formula. This method is simple and straightforward, but the biggest difficulty is that it is difficult to grasp the scientificity and accuracy of the formula. This method is mainly suitable for measures that must occur during the construction process, but it is difficult to specify the item** at the time of bidding, and it is not possible to list the project content separately.

For example, this method can be used for night construction costs, secondary transportation costs, and construction during the winter rainy period.

3 Subcontracting valuation.

The method of valuing the bidder's management fee and risk fee on the basis of subcontracting** is suitable for independent projects that can be subcontracted, such as indoor air pollution testing.

Sometimes the tenderer requires a detailed analysis of the cost of the measure project, and then the total cost of the measure project is calculated first by using the parameter method and the subcontracting method, which requires the artificial allocation of labor costs, material costs, machinery costs, management fees and profits by coefficients or proportions.

Find a pricing software, and the list method and set of quotas will come out.

First, the foundation of excavation.

1. Digging trench: v (cushion side length working face) Excavation depth Trench length Grading increment (1) Excavation depth:

Outdoor design floor elevation and natural floor elevation are within, and excavation depth is calculated from the lower surface of foundation cushion to outdoor design floor elevation;

In addition to the outdoor design floor elevation and the natural floor elevation, the excavation depth is calculated from the lower surface of the foundation cushion to the natural design floor elevation.

2) Trench length: the outer wall is calculated according to the length of the center line, and the inner wall is calculated according to the net length line (3) Grading increment: the length of the trench and the coefficient of excavation depth.

The amount of excavation per meter of the tunnel can be calculated by professional software, free of charge, and the landlord can refer to it!

Taking a certain physical direction (such as the horizontal direction) as the starting direction, the sagittal diameter (distance) between the center of rotation of the instrument and the intersection of the actual excavation contour line and the angle between the sagittal diameter and the horizontal direction are measured one by one according to a certain spacing (angle or distance), and the actual excavation contour line can be obtained by connecting these sagittal endpoints in turn. The fixed-point orientation data of the cross-sectional instrument can be obtained through the construction control wire in the tunnel, and the spatial three-dimensional matching between the actual excavation contour line and the design excavation contour line can be automatically completed with the help of calculation software, and the over-and-under-excavation value (distance area) between each measurement point and the corresponding design excavation contour line can be output. If several sections are measured at certain intervals along the axial direction of the tunnel, the actual amount of excavation, over-excavation and under-excavation can also be calculated.