1、 System control:

　　1On the application of special-shaped column frame and frame shear.Based on the fact that Jinan area is 6 degree area except Pingyin, the limit value of 7 degree is adopted according to Tianjin regulations, and all corresponding structures are adopted. The height width ratio of limb is less than 4, the beam height is more than 400mm, and the load is slightly higher than the Tianjin standard no more than 11kn / m2

　　2About short pier shear wall.There must be enough common shear walls, accounting for about 50% of the anti earthquake overturning moment. When the span height of the coupling beam is greater than 5, the frame beam can be configured according to the specification, but the stress inspection of the wall limb shall be strengthened, and the structure of the beam extending into the wall limb shall not be less than that of the coupling beam.

　　3Two aspects should be paid attention to

(1) The selection of transfer layer is reasonable, and high-level conversion needs to be discussed.

(2) Frame supported joists can not be converted into supporting walls for many times. Generally, the beams beyond the second transfer are not designed as joists for the third time.

　　4Side limit control: generally, the basement is used as post cast strip when there is podium, and the podium can be moved laterally, but attention should be paid to ensure the transfer stiffness of the podium when the podium is large.Generally, when there is 1 / 4 local no side limit around, as long as this part is strengthened, it can be satisfied.

　　5Slab column seismic wall system: the slab column system alone is not allowed, and certain anti-seismic wall must be set. However, if there are beams outside the middle column, the slab column system can also be considered.

　　6The rules and irregularity of the system are completely in accordance with the requirements of the specification, and attention should be paid to the problem of eccentricity.

　　7The system should not be mixed.

　　8The inner frame cannot be a single row inner frame with one inner column.

　　9The brick buildings with bottom frame must meet the seismic requirements in both vertical and horizontal directions, bear their own seismic forces, and meet the spacing between transverse walls.

2、 Description and load

　　1The load must be selected correctly. The permanent load control is that the permanent load accounts for about 70 ~ 80% of the total load, and the term coefficient is 1.35

　　25 kn / m2, which refers to high-rise buildings but small high-rise buildings (about 12 floors), can not be taken.

　　3The safety level and service life must be indicated in the instructions.The reference period is the basis for the preparation of the specification rather than the service life.In addition to more than 50 years, there must be certain measures and reasonable to ensure safety.

3、 Masonry:

　　1On the limit of the number of height floors:

(1) The height and the number of floors are more important. When the indoor and outdoor height difference is greater than 0.6m, the total height can be increased by 1 m, and if more can be added at the bottom layer, the height can be enlarged to about 3.9-4m by 3.6m.

(2) On the attic when not used, no stairs can be considered for ceiling, there are stairs to go up must be considered as a floor.

(3) The semi basement can be used as the consolidation end when the condition is satisfied.The height of the underground part is higher than that of the above ground part, the internal wall is more, the rigidity is better, and the cast-in-place thickness of ± 0.00 floor is greater than 120mm. For example, for the hollow slab, the cast-in-place layer on the slab must be poured first and then built to ensure its integrity.

　　2About masonry materials.Due to the elimination of clay brick, the wall materials are relatively disordered.First of all, the seismic code shall be strictly followed, supplemented by the code for masonry and perforated brick, and the specification for perforated brick shall be modified. Therefore, in case of any violation, the code shall prevail.It is better to formulate local regulations and implement them accordingly.

　　3The contraction joint is too long – take certain measures to be appropriate and not too long.

　　4Control of buildings with less transverse walls and close to the limit value.Many designs fail to meet this requirement.

When the cross wall is less and the room area with more than 4.2m Bay accounts for 40% of the total, article 7.3.14 of the seismic code shall be followed.When it is close to the limit value, i.e. 6 degree 8 floor, 7 degree 7 floor, the article 5 of 7.3.2 of seismic code shall be implemented.

　　6Columns should be set at the intersection of the external wall and the inner horizontal wall when the floor is 7 degrees and 6 floors.

　　5Adding structural columns on both sides of the large opening can be added at the intersection of the internal and external walls. The so-called large opening is the opening ＞ 2m, and the height is ≥ 2 / 3 floor height.

　　6The horizontal wall spacing can be appropriately relaxed at the top floor.

　　7The anchorage length of the cantilever beam of the wall is prone to error.

　　8The masonry construction quality is generally grade B. if not, it must be noted.

　　9It is often neglected that the cement mortar should be lower than the mixed mortar, which results in unsafe factors.

　　10Bottom frame

(1) Note that the reinforcement of constructional column of upper brick wall is φ 14;

(2) Align with the lower part of the wall or beam.

(3) The upper and lower stiffness ratio should not be too large, but should not be less than 1

4、 Reinforced concrete structure

　　1The material strength of concrete and steel must be specified.

　　2The protective layer of concrete must match the environmental conditions.

　　3The common problems are that the anchorage, lap joint, minimum reinforcement ratio and maximum reinforcement ratio should meet the requirements of the new code.

　　4When the beam section is more than 450mm, the waist reinforcement should be added every 200 mm.

　　5Whether the expansion joint is properly treated.

　　6The high-rise building shall submit the calculation results – period, displacement and weak interlayer displacement. If there are special circumstances, the calculation sheet shall be obtained.

　　7For high-rise complex structures, the program name must be specified.

　　8The structure in Pingfa 00g101 does not conform to the specification, so it needs to be supplemented and modified according to the new specification.

　　9There are many problems in the plane calculation: the cantilever beam end is not clear enough, the reinforcement is missing, the marking in one side is chaotic, there are often errors in the support and the middle of the span, the full-length reinforcement is inconsistent with the support reinforcement, etc., the drawing should be self adjusted and submitted for approval.

　　10The marking of shear wall is too simple. The concealed column and beam should meet the requirements of the new code. Especially, the restraint and structure of edge members must be distinguished.The expression of reinforcement requirements for reinforcement area and reinforcement part should be clear.

5、 Foundation:

　　1The biggest difference between the new and old codes should be paid attention to the bearing capacity characteristic value FAK instead of the standard value FK

　　2At present, the standard value corresponds to the selection of foundation, i.e. the bottom area of foundation, but the calculation of foundation should be based on the design value, which can not be confused.

　　3The foundation that needs settlement checking calculation is different from the old code, so we must pay attention to it.

　　4The requirements for foundation treatment (including soil filling) shall be clearly marked, all data shall be filled in, and corresponding data shall be submitted for new technology.

　　5Pile type, bearing stratum, bearing value, test pile requirements, anchor pile requirements and settlement requirements shall be written in the selection of pile foundation.

　　6The connection requirements of pile and bearing platform must meet the specification requirements.

　　7In addition to meeting the requirements of bending and shear, the foundation should pay attention to the local bearing capacity. At present, some foundations are easy to ignore the shear calculation except the calculation area.

6、 Steel structure:

　　1The key point lies in the perfect and reasonable setting of support system.

　　2Reliable connection.

　　3The foundation design is correct and consistent with the design sketch.