地基與基礎(chǔ)工程施工工藝（20）

1、地基與基礎(chǔ)工程施工工藝（20）     7質(zhì)量驗(yàn)收及標(biāo)準(zhǔn) （1）質(zhì)量檢驗(yàn)必須分層進(jìn)行，只有每層的分層厚度、分段施工時(shí)搭接部分的壓實(shí)情況、加水量、壓實(shí)遍數(shù)、壓實(shí)系數(shù)均符合設(shè)計(jì)要求后，才能鋪填上層土。 （2）換填用的原材料質(zhì)量、配合比必須符合設(shè)計(jì)要求，且應(yīng)拌和均勻。 （3）施工結(jié)束后應(yīng)檢驗(yàn)換填地基承載力。 （4）不同材料的換填地基質(zhì)量檢驗(yàn)標(biāo)準(zhǔn)見(jiàn)表2-13、表2-14、表2-15。 表2-13粉質(zhì)粘土換填地基質(zhì)量檢驗(yàn)標(biāo)準(zhǔn)       

2、;         項(xiàng)目            序號(hào)            檢查內(nèi)容            允許偏差或允許值  &

3、#160;         檢查方法                    單位            數(shù)值       

4、;             主控項(xiàng)目            1            地基承載力           &

5、#160;符合設(shè)計(jì)要求            按攔和時(shí)的體積比                    2            配合比  &

6、#160;         符合設(shè)計(jì)要求            按規(guī)定方法                    3      &

7、#160;     壓實(shí)系數(shù)            符合設(shè)計(jì)要求            現(xiàn)場(chǎng)實(shí)測(cè)                  

8、;  一般項(xiàng)目            1            石灰粒徑            mm          

9、  5            篩分法                    2            土料有機(jī)物含量  

10、          %            15            試驗(yàn)室焙燒法              

11、60;     3            土顆粒徑            mm            15       

12、     篩分法                    4            含水量（與最優(yōu)含水量比較）          &

13、#160; %            ±2            烘干儀                    5  &

14、#160;         分層厚度偏差（與設(shè)計(jì)要求比較）            mm            ±50            

15、水準(zhǔn)儀             表2-14砂、砂石換填地基質(zhì)量驗(yàn)收標(biāo)準(zhǔn)                項(xiàng)            檢查內(nèi)容     &#

16、160;      允許偏差或允許值            檢查方法                    主控項(xiàng)目        

17、0;   地基承載力            符合設(shè)計(jì)要求            按規(guī)范方法                    

18、配合比            符合設(shè)計(jì)要求            按拌和時(shí)的質(zhì)量或體積比                    壓實(shí)系數(shù)  

19、          符合設(shè)計(jì)要求            現(xiàn)場(chǎng)實(shí)測(cè)                    一般項(xiàng)目     

20、0;      砂石料有機(jī)物含量（%）            5            焙燒法                 &

21、#160;  砂石料含泥量            5            篩分法                    石料粒徑/mm&#

22、160;           100            篩分法                    與最優(yōu)含水量差值（%）   

23、60;        ±2            烘干法                    與設(shè)計(jì)要求分層厚度差值/mm     

24、60;      ±50            水準(zhǔn)儀             表2-15粉煤灰換填地基質(zhì)量檢驗(yàn)標(biāo)準(zhǔn)              

25、60; 項(xiàng)目            序號(hào)            檢查項(xiàng)目            允許偏差或允許值          

26、;  檢查方法                    單位            數(shù)值              

27、60;     主控項(xiàng)目            1            壓實(shí)系數(shù)            符合設(shè)計(jì)要求      

28、      現(xiàn)場(chǎng)實(shí)測(cè)                    2            地基承載力          &#

29、160; 符合設(shè)計(jì)要求            按規(guī)定方法                    一般項(xiàng)目            1 

30、0;          粉煤灰粒徑            mm                        篩分法  

31、                  2            氧化鋁和二氧化硅含量            %      

32、      70            試驗(yàn)室化學(xué)分析                    3            燒失量            mm   &