DB43-T 2763-2023 基樁自平衡法靜載試驗(yàn)用荷載箱通用技術(shù)要求

ICS

17.020CCS

43湖南 省 地 方標(biāo) 準(zhǔn)DB43/T

2763—2023基樁自平衡法靜載試驗(yàn)用荷載箱通用技術(shù)要求GeneralTechnicalSpecificationforLoadCellofstaticloadingtestoffoundationpilewithself-balancedmethod2023

-

09

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27

發(fā)布

2023

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實(shí)施湖南省市場(chǎng)監(jiān)督管理局

發(fā)

布DB43/T

2763— 前言························································································································

Ⅲ1

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12

規(guī)范性引用文件······································································································13

術(shù)語(yǔ)和定義············································································································13.1 額定壓力·········································································································13.2 額定輸出推力···································································································14

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25

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26

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27

工作介質(zhì)···············································································································38

技術(shù)要求···············································································································38.1 外觀···············································································································38.2材料···············································································································48.3荷載箱性能······································································································49

試驗(yàn)方法···············································································································59.1儀器設(shè)備·········································································································59.2 外觀···············································································································59.3材料···············································································································59.4 荷載箱性能試驗(yàn)································································································

510 檢驗(yàn)規(guī)則··············································································································710.1 檢驗(yàn)分類(lèi)

·······································································································710.2 檢驗(yàn)項(xiàng)目

·······································································································710.3 檢驗(yàn)要求

·······································································································710.4 判定··············································································································811 銘牌、包裝、運(yùn)輸、儲(chǔ)存

························································································

811.1 銘牌··············································································································811.2 包裝··············································································································811.3 運(yùn)輸··············································································································811.4 儲(chǔ)存··············································································································8DB43/T

2763— 本文件按照

GB/T

—《標(biāo)準(zhǔn)化工作導(dǎo)則 第

1

部分：標(biāo)準(zhǔn)化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)定起草。請(qǐng)注意本文件的某些內(nèi)容可能涉及專(zhuān)利。本文件的發(fā)布機(jī)構(gòu)不承擔(dān)識(shí)別專(zhuān)利的責(zé)任。本文件由湖南省市場(chǎng)監(jiān)督管理局提出并歸口。限公司、永祺科技檢測(cè)股份有限公司、浙江歐感巖土工程科技有限公司本文件主要起草人：陳斌、程彥、易亮、羅檢民、俞昊、汪曉豐、易教良、王雙雙

。IIIDB43/T

2763—IVDB43/T

2763—1

本文件規(guī)定了基樁自平衡法靜載試驗(yàn)用荷載箱（以下簡(jiǎn)稱(chēng)荷載箱）的結(jié)構(gòu)、工作介質(zhì)、技術(shù)要求、試驗(yàn)方法、檢驗(yàn)規(guī)則等要求，描述了符號(hào)、分類(lèi)、銘牌、包裝、運(yùn)輸、儲(chǔ)存等內(nèi)容。本文件適用于基樁自平衡法靜載試驗(yàn)用荷載箱的設(shè)計(jì)、開(kāi)發(fā)、生產(chǎn)和測(cè)試。2

規(guī)范性引用文件文件。GB/T

優(yōu)質(zhì)碳素結(jié)構(gòu)鋼GB/T

碳素結(jié)構(gòu)鋼GB/T

吊環(huán)螺釘GB/T

緊固件機(jī)械性能螺栓、螺釘和螺柱GB/T

液壓氣動(dòng)用

O

形橡膠密封圈 第

1

部分：尺寸系列及公差GB/T

液壓氣動(dòng)用

O

形橡膠密封圈 第

2

部分：外觀質(zhì)量檢驗(yàn)規(guī)范GB/T

9065 液壓軟管接頭GB/T

往復(fù)運(yùn)動(dòng)橡膠密封圈結(jié)構(gòu)尺寸系列

第

1

部分：?jiǎn)蜗蛎芊庀鹉z密封圈GB/T

17395 無(wú)縫鋼管尺寸、外形、重量及允許偏差JB/T

8727 液壓軟管總成JB/ZQ

4264

形密封圈JB/ZQ

4265

形密封圈JG/T

鋼筋連接用灌漿套筒JGJ/T

403—2017建筑基樁自平衡靜載試驗(yàn)技術(shù)規(guī)程JJG

—2012 液壓千斤頂檢定規(guī)程JJF（湘）

45—2020 荷載箱校準(zhǔn)規(guī)范JT/T

—2013 基樁自平衡法靜載試驗(yàn)用荷載箱3

術(shù)語(yǔ)和定義下列術(shù)語(yǔ)和定義適用于本文件。3.1額定壓力 rated

荷載箱正常工作條件下允許輸入的最大壓力。3.2額定輸出推力 rated

DB43/T

2763—荷載箱（液壓缸）額定壓力下的輸出推力。4

下列符號(hào)適用于本文件。：液壓缸內(nèi)徑，單位為毫米（mm）。F：理論輸出推力，單位為千牛（kN）。F：實(shí)際輸出推力，單位為千牛（kN）。Fimax

：對(duì)檢定或校準(zhǔn)點(diǎn)進(jìn)行

3

次測(cè)量的力值最大值，單位為千牛（kN）。Fimin

：對(duì)檢定或校準(zhǔn)點(diǎn)進(jìn)行

3

次測(cè)量的力值最小值，單位為千牛（kN）。F

：對(duì)檢定或校準(zhǔn)點(diǎn)進(jìn)行

3

次測(cè)量的力值平均值，單位為千牛（kN）。

：荷載箱在加載達(dá)到

1.2

倍額定輸出推力后，持荷

30

的壓力減小率。：對(duì)檢定或校準(zhǔn)點(diǎn)進(jìn)行

3

次測(cè)量的壓力最大值，單位為兆帕（MPa）。

：對(duì)檢定或校準(zhǔn)點(diǎn)進(jìn)行

3

次測(cè)量的壓力最小值，單位為兆帕（MPa）。

：對(duì)檢定或校準(zhǔn)點(diǎn)進(jìn)行

3

次測(cè)量的壓力平均值，單位為兆帕（MPa）。

：額定壓力，單位為兆帕（MPa）。P：荷載箱壓力泄漏的最大值，單位為兆帕（）。：示值重復(fù)性。

：荷載箱負(fù)載效率。5

按荷載箱在基樁中位置，可分為樁間荷載箱和樁端荷載箱。6

荷載箱一般由液壓缸、上下連接板、上下位移桿、上下位移護(hù)管、位移絲、位移絲護(hù)管、分液管、進(jìn)液管、連接螺栓、缸內(nèi)注漿管等組成，荷載箱結(jié)構(gòu)示意圖見(jiàn)圖

1。DB43/T

2763— 10 1112圖

1荷載箱結(jié)構(gòu)示意圖7

工作介質(zhì)工作介質(zhì)為抗磨液壓油或生活用水。8

技術(shù)要求8.1 外觀8.1.1 產(chǎn)品表面應(yīng)整潔，無(wú)鐵屑、浮銹、油污。8.1.2液壓缸表面（包括焊接處）不應(yīng)有裂紋。DB43/T

2763—8.1.3 上、下連接板切割面應(yīng)平滑、邊角打磨無(wú)毛刺、飛邊，鉆孔后應(yīng)倒角或打磨孔口無(wú)銳角。8.1.4 荷載箱附件焊接處焊縫應(yīng)均勻飽滿(mǎn)、連續(xù)、無(wú)氣孔夾渣、無(wú)漏焊和缺焊。8.1.5 液壓軟管連接應(yīng)有護(hù)套封閉保護(hù)，保護(hù)套采用點(diǎn)焊焊接牢固，無(wú)松動(dòng)。8.2 材料8.2.1荷載箱總成連接螺栓均采用強(qiáng)度等級(jí)不低于

8.8

級(jí)的高強(qiáng)度螺栓。緊固件機(jī)械性能螺栓、螺釘和螺柱應(yīng)符合

GB/T

的規(guī)定。8.2.2 軟管接頭采用扣壓式，工作壓力為

，應(yīng)符合

GB/T

9065

和

JB/T

8727

的規(guī)定。8.2.3 荷載箱的液壓缸密封圈采用橡膠密封圈，尺寸系列及公差應(yīng)符合

GB/T

3452.1、JB/ZQ

4264

和JB/ZQ

4265

GB/T

3452.2

及

GB/T

的規(guī)定。8.2.4

Q235C

GB/T

的規(guī)定。8.2.5 荷載箱的液壓缸缸套和活塞采用

GB/T699

和

GB/T

17395

的規(guī)定。8.3 荷載箱性能8.3.1 計(jì)量性能荷載箱計(jì)量性能應(yīng)符合

—2017

附錄

A

的

A.0.1

的要求。8.3.2 荷載箱負(fù)載效率荷載箱的實(shí)際輸出推力與理論輸出推力值之比為荷載箱負(fù)載效率

，

值不應(yīng)小于

0.9。8.3.3 示值重復(fù)性荷載箱檢定或校準(zhǔn)示值重復(fù)性不應(yīng)大于

3％。8.3.4 荷載箱啟動(dòng)壓力荷載箱空載啟動(dòng)壓力應(yīng)小于額定壓力的

4％。8.3.5 荷載性能荷載箱在加載達(dá)到

30

min

5％等異?，F(xiàn)象。8.3.6 剛性連接件應(yīng)進(jìn)行抗拉試驗(yàn)，其力學(xué)性能應(yīng)符合

398

的規(guī)定。8.3.7 荷載箱有效行程不應(yīng)小于

100

mm。8.3.8 吊環(huán)螺釘

GB/T

的規(guī)定。DB43/T

2763—8.3.9 荷載箱附屬件計(jì)圖的要求。9

試驗(yàn)方法9.1 儀器設(shè)備荷載箱和液壓缸試驗(yàn)所用儀器及配套設(shè)備應(yīng)符合以下要求：a）

標(biāo)準(zhǔn)測(cè)力儀：準(zhǔn)確度等級(jí)不低于

0.5

級(jí)，其測(cè)量范圍應(yīng)與被檢荷載箱相適應(yīng)；b）

電液伺服萬(wàn)能試驗(yàn)機(jī)：準(zhǔn)確度等級(jí)不低于

1.0

級(jí)，其測(cè)量范圍應(yīng)與被檢荷載箱相適應(yīng)；c）

鋼直尺：測(cè)量范圍（0—300）mm，分度值

1.0

；d）

鋼卷尺：測(cè)量范圍（0—5000）mm，分度值

1.0

mm；e）

游標(biāo)卡尺：測(cè)量范圍（0—）mm，分度值

mm；f）

數(shù)字壓力計(jì)：測(cè)量范圍（0—70）MPa，準(zhǔn)確度等級(jí)：0.5

級(jí)；g）

精密壓力表：測(cè)量范圍（0—60）MPa，準(zhǔn)確度等級(jí)：0.4

級(jí)；h）

秒表：分辨力不低于

0.1

s；i）

固的反力架結(jié)構(gòu)在承受最大力值時(shí)無(wú)明顯的承壓板應(yīng)能完全覆蓋被檢荷載箱的全部液壓缸組。j）

液壓泵：其額定壓力應(yīng)不小于

；9.2 外觀產(chǎn)品外觀質(zhì)量，用目測(cè)方法檢測(cè)，應(yīng)符合

8.1

的要求。9.3 材料9.3.1 連接螺栓抗拉強(qiáng)度試驗(yàn)，按

GB/T

3098.1

的方法進(jìn)行。9.3.2 液壓軟管總成

％進(jìn)行加壓檢驗(yàn)，承受壓力應(yīng)符合

8.2.2

的要求。9.3.3 液壓缸密封圈采用

O

Y

形橡膠密封圈，其尺寸系列及公差應(yīng)符合

GB/T

及

GB/T10708.1

的規(guī)定；外觀質(zhì)量檢驗(yàn)應(yīng)按

GB/T

3452.2

的規(guī)定進(jìn)行。9.4 荷載箱性能試驗(yàn)9.4.1 計(jì)量性能按照

JGJ/T

403—2017

A

的

A.0.1

的要求進(jìn)行，應(yīng)符合

8.3.1

的要求。9.4.2 荷載箱負(fù)載效率荷載箱負(fù)載效率按式（1）計(jì)算：

iFiFl

·····························································（1）其中Fi

以檢定或校準(zhǔn)力值為準(zhǔn)，l

按式（2）計(jì)算：4

104

103

·················································（2）l

dy2Pn

DB43/T

2763—應(yīng)符合

8.3.2

的要求。9.4.3 示值重復(fù)性上讀數(shù)，按式（3）計(jì)算重復(fù)性

：R

P

PPi

100%

····················································（3）以荷載箱指示器的示值為依據(jù)，在標(biāo)準(zhǔn)測(cè)力儀或電液伺服萬(wàn)能試驗(yàn)機(jī)上讀數(shù)，按式（4）計(jì)算重復(fù)性

：R

F

FiFi

100%

··················································（4）

100%

100%

····················································（5）9.4.4 荷載箱啟動(dòng)壓力應(yīng)符合

8.3.4

的要求。9.4.5 荷載性能行加載試驗(yàn)，按荷載箱額定壓力的

20％、40％、％、80％、％、120％分六級(jí)等速加載，加載速度約

5

MPa/min，按式（5）計(jì)算，應(yīng)符合

8.3.5

的要求。PPn9.4.6 剛性連接件進(jìn)行抗拉試驗(yàn)，力學(xué)性能應(yīng)符合

8