Traffic bridge is generally an important national infrastructure, and the accuracy of project settlement directly affects the authenticity and legitimacy of capital construction project investment. Therefore, to do a good job in the audit of capital construction projects, it is necessary to do a good job in the audit of project settlement. Engineering quantity is the basis of all cost calculation and the focus of audit. The main disputes in the calculation of bridge engineering quantity are the number of steel bars, steel hinge lines and concrete, as well as the cast-in-place pile project. Among them, the problem of steel bars is particularly prominent. Check the reinforcement, first of all, check the number of reinforcement in the design drawings to see if there is a wrong number and total error. Secondly, whether to deduct non-metric reinforcement should be reviewed. Non-metric reinforcement mainly includes:

1, vertical steel

Generally speaking, the reinforcement of the following parts will not be measured separately in the audit: the reinforcement cage of pile foundation locates the reinforcement; Erecting steel bars in the pile caps (only referring to the vertical steel bars in the reinforcing cage of the pile caps to separate the steel mesh); Hollow slab beam airbag internal mold fixed steel bar; Spiral reinforcement under prestressed box girder anchor (reinforcement under prestressed box girder anchor shall be measured separately); Prestressed box girder anchorage reinforcement; Precast beam lifting ring reinforcement and precast box girder inserting plate lifting ring reinforcement; Fixing the steel bars of pre-embedded facilities (corrugated pipes) of prestressed steel strand pipelines; Installation reinforcement provided by expansion joint device manufacturer.

2. Interim measures

Temporary consolidation of steel bars, steel hinge lines, etc. at the mouth of cantilever pouring prestressed concrete continuous beam. The design drawings such as temporary consolidation materials in the middle closure section and locking reinforcement of rigid skeleton in the closure section are not clearly marked, but the contractor has added various reinforcement to complete the work.

3. Embedded components

Prestressed concrete formwork, tensioning, grouting, pouring, concrete decoration and maintenance, hoisting and connection of prefabricated members, etc. It will not be measured and paid separately: the anti-falling steel bars welded under various steel bar embedded parts and the shockproof bolts on the plate beam cover beam will not be measured separately.

4. Working length of steel hinge line

The working length of steel hinge line of prestressed box girder (the theoretical length between the anchorage outlets at both ends of prestressed box girder is only measured separately) is not measured separately: the working length of steel hinge line left by replacing new cables during the operation of stay cables is the designed effective length, which can be measured according to the weight of stay cables provided by design drawings.

When auditing, on the basis of mastering the measurement rules of engineering quantity, be familiar with the construction drawings and as-built drawings, and carefully audit the calculation and source of engineering quantity in the design drawings. When calculating, check whether there is any problem of over-calculation or repeated calculation of engineering quantity.

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