噴泉設備回水槽施工方法

1、核對性水（shuǐ）準點,布（bù）設（shè）暫時水準點，核對高程。

2、測設噴泉設備水槽中（zhōng）間樁,管（guǎn）線原地上高程,,施放挖槽（cáo）邊線,堆土,堆（duī）料間隔（gé）及暫時用（yòng）地方案。

=

3、槽開挖（wā）時嚴肅控製槽底高程決不超挖,槽底高程能夠比描繪高程跋涉10cm,做予（yǔ）留有些（xiē）,完畢用人工清挖,以防（fáng）槽底（dǐ）被擾動而影響工程質量。槽內挖出的土方,堆放在距溝槽邊緣1.0米以外,土質鬆軟危險地段選用用支撐方法以防溝槽塌方。

4、槽底素土夯實，槽四邊圍運用MU5.0毛石M5水泥沙漿砌築：

a原資料的選（xuǎn）用：為了降低水化熱，選用32.5級礦渣水泥;思索混凝土可泵性，降低縮短，保證強度，跋涉混凝土的耐久（jiǔ）性和抗（kàng）裂性，選用5-31.5mm的連續徑粒碎石;為了抵達混凝土（tǔ）攪拌物28.5度的（de）出灌溫度，選用深井（jǐng）地下水攪拌;在混凝土中（zhōng）摻和UEA膨脹劑和超緩型高效泵送劑，抵償混凝土的縮短（duǎn），推延水化物的開釋，減少底板的溫度應力，跋涉可泵性;在混凝土中摻入Ц級粉煤灰。

b噴泉設備澆築方法：央求一次性澆（jiāo）築完畢（bì），不留施工縫（féng），加強池底及池壁的防滲水才調。混凝土澆築（zhù）選用從底到上“斜麵分層（céng）、故步自封、薄層（céng）澆（jiāo）築、天然活動、連續施工、一次到頂”的澆築方法。

c振搗：應嚴肅控製振搗時（shí）辰、振搗點間（jiān）隔和刺進深度，避免各澆（jiāo）築帶交接處的漏振。跋涉混凝土與鋼筋的握裹力，增大密實度。

d噴泉設備表麵及泌水處置（zhì）：澆築成型後的混凝土表（biǎo）麵水（shuǐ）泥砂漿較厚，應安描繪標高用刮尺刮平，趕開（kāi）表麵泌水，初凝前，重複碾壓，用木抹子（zǐ）搓壓表麵2-3遍，以逼和收水裂縫。

e噴泉設備混凝土保護：因工程（chéng）施工，正值秋季，正午、夜晚溫差較大，為（wéi）保（bǎo）證混凝土（tǔ）施（shī）工質量，控製（zhì）溫度裂縫的發作，選用蓄（xù）水保護。蓄水前，選用先蓋一（yī）層塑料薄膜，一層草袋（dài），進行保濕暫時保護（hù）。

5、溢水、進（jìn）水管線的設備（bèi）參照描繪圖紙。

6、噴泉設備管線施工（gōng）完畢（bì），設備水（shuǐ）箅子蓋板：

a湧泉的水箅子蓋板（bǎn）資料為（wéi）不鏽鋼。規範為600*600，四（sì）角固定運用（yòng）108*4，25高（gāo）的不鏽鋼圈，四邊是30*30*3的不鏽鋼，對（duì）角直線為38*25*1.5的不鏽鋼方管，四邊分區的橫欄選用25*25*1.0的不鏽鋼方管。

b回水槽的（de）水箅子寬為600，長度現場判定，四邊選用30*30*3的不鏽鋼管焊接（jiē），中間選用25*25*1.0的（de）橫欄焊接

Fountain equipment back water tank construction method

1. Check permanent leveling point, lay temporary leveling point and check elevation.

2. Measure and set the middle pile of fountain equipment flume, raise the pipeline in situ, discharge the side line of excavation groove, heap soil, heap material interval and temporary land use plan.

=

3. During the excavation of the groove, the height of the groove bottom shall be strictly controlled and never overdug. The height of the groove bottom can be trekked 10cm higher than the depicted height, leaving some to be left. The earthwork dug out in the trench is stacked 1.0 meters away from the edge of the trench, and the support method is adopted in the dangerous area of soft soil to prevent the collapse of the trench.

4. Plain earth at the bottom of the tank is rammed, and MU5.0 rubble M5 cement mortar masonry is used to surround the four sides of the tank:

A. Selection of original data: in order to reduce hydration heat, grade 32.5 slag cement is selected; Considering the pumping ability of concrete, reducing the shortening, ensuring the strength, durability and crack resistance of trudging concrete, 5-31.5mm continuous diameter gravel is selected. In order to reach the concrete mixing temperature of 28.5 degrees, deep well groundwater mixing is selected. The concrete is mixed with UEA expansion agent and superslow efficient pumping agent to offset the shortening of the concrete, delay the release of hydrates, reduce the temperature stress of the bottom plate, and make it pump. Incorporating Ц grade fly ash in concrete.

B fountain equipment pouring method: begged the one-time pouring finished, do not leave construction joints, strengthen the bottom and wall of the pool seepage prevention water adjustment. Concrete is poured from bottom to top by "inclined plane layering, self-sealing, thin layer pouring, natural activities, continuous construction, one time to the top" method.

C vibration: vibration time, vibration point interval and penetration depth should be strictly controlled to avoid leakage vibration at the junction of each casting belt. Trek concrete and steel grip force, increase compactness.

D fountain equipment surface and bleeding treatment: the cement mortar on the concrete surface after pouring and molding is thick, the elevation should be scraped flat with a scraper to drive away the surface bleeding. Before initial setting, the surface should be repeatedly rolled and pressed with wooden trowel for 2-3 times to squeeze and collect water cracks.

E fountain equipment concrete protection: because of engineering construction, it is autumn, the temperature difference between noon and night is large, in order to ensure the quality of concrete construction, control the onset of temperature cracks, choose water storage protection. Before water storage, choose to cover a layer of plastic film, a layer of straw bag, for temporary protection of moisture.

5. Refer to the drawing for equipment of overflow and inlet pipelines.

6. After the completion of the fountain equipment pipeline construction, the water grate cover plate of the equipment:

A. The information of the inwelling water grate cover plate is stainless steel. Specification is 600*600, four corners fixed use of 108* 4,25 high stainless steel ring, the four sides are 30*30*3 stainless steel, diagonal line is 38*25*1.5 stainless steel square tube, the four side partition of the bar selection of 25*25*1.0 stainless steel square tube.

B the water grate of the water back sink has a width of 600, and its length is determined on site. The stainless steel tubes of 30*30*3 are used for welding on the four sides, and the bars of 25*25*1.0 are used for welding in the middle