噴泉設備回水槽施工方法

1、核對性水準點,布設暫時水準（zhǔn）點，核對高程。

2、測設噴泉設備（bèi）水槽中間（jiān）樁,管線原地上高程,,施放（fàng）挖（wā）槽邊線,堆（duī）土,堆料間（jiān）隔及暫時用地方案。

=

3、槽開挖時嚴肅控（kòng）製（zhì）槽底高程決不超挖,槽底高程能夠比描繪高程跋涉10cm,做（zuò）予留有些,完畢用人工清挖,以防（fáng）槽底被擾（rǎo）動而影響工程質量。槽內挖出（chū）的土方,堆放在距溝槽邊緣1.0米以外,土質鬆軟危險地（dì）段選用用支撐方法以防溝槽（cáo）塌（tā）方。

4、槽底素土夯實，槽四邊（biān）圍運用MU5.0毛石M5水泥沙漿砌築：

a原資（zī）料的選用：為了降低（dī）水化熱，選用32.5級礦渣水泥;思索混凝土可泵性，降（jiàng）低（dī）縮短，保（bǎo）證強度，跋涉（shè）混凝土的耐（nài）久性和抗裂性，選用5-31.5mm的連續徑粒碎石（shí）;為了抵達混凝（níng）土攪拌物28.5度的出灌溫度，選用深井地下水攪拌;在混凝（níng）土中摻和UEA膨脹劑和超緩型高效泵送劑，抵償混凝土的縮短，推延水化物的開釋，減少底（dǐ）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：央求一次性澆築完畢（bì），不留施（shī）工縫，加強池底及池壁（bì）的防滲水才調。混凝土澆（jiāo）築選用從底到上“斜麵分層、故步自封、薄（báo）層澆築、天然（rán）活動、連（lián）續施工（gōng）、一次到頂”的澆築方法。

c振搗：應嚴肅控（kòng）製振（zhèn）搗時辰、振搗點（diǎn）間隔和刺進深度，避（bì）免各澆築帶交接處的漏振。跋涉混（hún）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：澆築成型後的混凝（níng）土表麵水泥（ní）砂漿較厚，應安描（miáo）繪標高用刮尺刮平，趕開表麵泌水，初凝前，重（chóng）複碾壓，用木抹子（zǐ）搓壓表麵（miàn）2-3遍，以逼和收水裂縫。

e噴泉設備混（hún）凝土保護：因工程（chéng）施工，正值秋季，正午、夜晚溫差較大，為保證（zhèng）混凝土施工質量，控製溫度裂縫的發作，選用蓄水保護。蓄水前，選用先（xiān）蓋一層塑料薄膜，一層草袋，進行保濕暫時保（bǎo）護。

5、溢水、進（jìn）水管線的設備參照描繪圖紙。

6、噴泉設備管線施工完畢，設（shè）備水箅子蓋板：

a湧泉的水箅子蓋板資（zī）料為不鏽鋼。規範為600*600，四角固定運用108*4，25高的不鏽鋼圈，四邊是30*30*3的不鏽鋼，對角直線（xiàn）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